Electric flip driver overload protection device and intelligent toilet lid

Abstract

The utility model discloses an overload protection device for an electric flip driver and an intelligent toilet lid, which are mounted between a speed reduction input bull gear and a speed reduction output pinion which are coaxially arranged at one stage of a speed reduction mechanism of the electric flip driver, and an overload protection disc is connected with the speed reduction output pinion. At least one group of spherical bulges and spherical grooves which are matched with each other is arranged between the matching surfaces of the overload protection disc and the speed reduction input bull gear; and an elastic component is arranged on the transmission shaft between the speed reduction output pinion and the front end cover or between the speed reduction input bull gear and the mounting plate on the front end cover side. The electrically-driven cover turning driver applied to the intelligent toilet cover has the protection capability when the load is too large, and meanwhile, stable operation of the electrically-driven cover turning driver in a humid environment is ensured, and the service life of the electrically-driven cover turning driver is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric flip-top drivers, and in particular relates to an electric flip-top driver overload protection device and an intelligent toilet lid. Background Art

[0002] With continued economic growth and significant improvements in people's living standards, consumers are increasingly demanding bathroom appliances and even household appliances of all kinds. Intelligent and automated products are becoming a new favorite in the market. Driven by this trend, the intelligence and automation levels of products such as smart toilets, smart dishwashers, smart sinks, and smart washing machines are constantly improving. The automatic lid function is a key feature of these smart products, providing users with an unprecedented convenient experience.

[0003] Numerous electric flip-top actuators equipped with actuated cover plates are now available on the market. These actuators primarily consist of a motor, a reduction mechanism, and an actuator. The actuator is connected to the cover plate and, driven by the motor, increases torque through the reduction mechanism, thereby enabling the flipping and closing of the cover. However, in practice, when the device is overloaded—that is, when the rotational force of the driven part exceeds a certain limit—the DC motor is prone to stalling, causing a sharp increase in internal torque, which can lead to driver failure and render it inoperable, severely impacting the user experience and product reliability.

[0004] To address this issue, existing technologies often use electronic components for overload protection, such as thermal relays. However, since these products typically operate in a water environment, electronic components are easily damaged by moisture, thus seriously challenging their stability and durability in practical applications.

[0005] In summary, to overcome the shortcomings of the existing technology, improve the protection capabilities of the electric flip cover actuator against excessive loads, and simultaneously ensure stable operation in humid environments and extend its service life, it is urgently necessary to design a mechanical overload protection device with low friction, low noise, stable operation, and long service life. This application proposes an innovative technical solution based on this urgent need. Utility Model Content

[0006] In view of the problems existing in the prior art, the utility model provides an electric flip cover drive overload protection device and an intelligent toilet cover.

[0007] The utility model is implemented as follows: an overload protection device for an electric flip cover drive is characterized in that: it is installed between a coaxially arranged reduction input gear and a reduction output pinion of one stage of the reduction mechanism of the electric flip cover drive, the overload protection disk is connected to the reduction output pinion, at least one set of spherical protrusions and spherical grooves that cooperate with each other is provided between the mating surfaces of the overload protection disk and the reduction input gear, and an elastic member is provided on the transmission shaft between the reduction output pinion and the front end cover and / or between the reduction input gear and the mounting plate on the front end cover side.

[0008] Preferably, the reduction input gear is provided with a groove, the overload protection disc is embedded in the groove of the reduction input gear, and the spherical protrusion and the spherical groove cooperate with each other under the action of the elastic component to achieve power transmission.

[0009] Preferably, the elastic member is a spring or a butterfly spring, and the spring or butterfly spring enables the spherical protrusion and the spherical groove to cooperate with each other to achieve power transmission.

[0010] Preferably, a spring receiving groove is provided on the reduction input gear or the shaft seat on the mounting plate side.

[0011] Preferably, the overload protection disc and the reduction output pinion are an integrated structure.

[0012] Preferably, the overload protection disc and the reduction output pinion are split and detachable connection structures.

[0013] Preferably, a mounting hole is provided at the center of the overload protection disk, and at least one torsion surface for driving the overload protection disk to rotate is provided in the mounting hole. A torsion portion having the same cross-sectional shape as the mounting hole is provided on the reduction output pinion on the overload protection component side.

[0014] Preferably, the mounting hole is a D-shaped hole, a square hole, a diamond-shaped hole or an oblong hole.

[0015] Preferably, a spline groove is provided at the center of the overload protection disk, and a spline that matches the spline groove is provided at the end of the reduction output pinion.

[0016] The utility model also relates to an intelligent toilet cover, a seat ring and a toilet cover, and an electric flip-up driver for driving the toilet cover to flip. The utility model is characterized in that the electric flip-up driver includes a housing, a drive motor, a reduction mechanism and an output shaft, and also includes the above-mentioned overload protection device.

[0017] The advantages and technical effects of the present invention are as follows: The clutch plate, clutch assembly, and electric flip cover drive using the clutch assembly disclosed in the present invention demonstrate significant technical effects. The clutch plate can effectively absorb and disperse load energy when overloaded by designing an elastic deformation portion, thereby protecting the motor and other components from damage, and at the same time improving the stability and durability of the clutch plate. The clutch assembly further leverages the advantages of the clutch plate, and its unique overload protection design significantly improves the reliability and safety of the clutch assembly, making torque transmission more stable and preventing slipping or falling off. After adopting the clutch assembly, the technical effect of the electric flip cover drive has also been significantly improved. It can quickly cut off power transmission when overloaded, protect the drive motor and reduction mechanism, extend the service life, and at the same time improve operational stability and safety, and reduce the risk of failure. In addition, the design of the clutch assembly also makes drive maintenance more convenient, reducing maintenance costs and complexity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the installation position structure of the overload protection device of the utility model;

[0019] Figure 2 This is a schematic structural diagram of the overload protection device in Example 1 of the present utility model;

[0020] Figure 3 yes Figure 3 Middle AA section view;

[0021] Figure 4 This is a schematic structural diagram of Example 2 of the present utility model;

[0022] Figure 5 yes Figure 4 Middle BB cross-section;

[0023] Figure 6 This is a schematic diagram of the D-shaped hole structure of the overload protection disk of the overload protection device;

[0024] Figure 7 This is a schematic diagram of the structure of the final stage input pinion that matches the D-shaped hole;

[0025] Figure 8 This is a schematic diagram of the square hole structure of the mounting hole of the overload protection disk of the overload protection device;

[0026] Figure 9 This is a schematic diagram of the structure of the final stage input pinion that fits with the square hole;

[0027] Figure 10 Schematic diagram of the structure of the mounting hole of the overload protection disk of the overload protection device being a diamond hole;

[0028] Figure 11This is a schematic diagram of the structure of the final stage input pinion that matches the diamond hole;

[0029] Figure 12 This is a schematic diagram of the structure in which the mounting hole of the overload protection disk of the overload protection device is an oblong hole;

[0030] Figure 13 This is a schematic diagram of the structure of the final stage input pinion that matches the oblong hole;

[0031] Figure 14 This is a schematic diagram of a structure in which a spline groove is provided in the mounting hole of the overload protection disk of the overload protection device;

[0032] Figure 15 It is a schematic diagram of the structure of the final-stage input pinion that cooperates with the spline groove.

[0033] In the figure, 1. Electric flip-top driver; 1-1. Housing; 1-2. Front cover; 1-3. Mounting plate; 1-4. Shaft seat; 2. Overload protection disc; 2-1. Mounting hole; 2-2. Torsion surface; 3. Speed ​​reduction input gear; 3-1. Groove; 3-2. Spherical groove; 4. Speed ​​reduction output pinion; 4-1. Torsion portion; 4-2. Spline; 4-3. Spherical protrusion; 5. Elastic member; 6. Driving motor; 7. Speed ​​reduction mechanism; 8. Output shaft. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0035] Example 1, please refer to Figures 1 to 3 , an electric flip cover drive overload protection device, installed between the reduction input gear 3 and the reduction output pinion 4 coaxially arranged in one stage of the reduction mechanism 7 of the electric flip cover drive 1. The electric flip cover drive is arranged in a two-stage reduction reduction input gear 3, and the first-stage reduction is a worm gear reduction gear pair; the overload protection disk is connected to the reduction output pinion 4, and at least one group of spherical protrusions 4-3 and spherical grooves 3-2 that cooperate with each other are provided between the overload protection disk 2 and the mating surface of the reduction input gear. The spherical protrusions and spherical grooves can be evenly distributed on different pitch circles and evenly arranged on the same pitch circle. Preferably, adjacent pitch circles are located on the same straight line, and an elastic member 5 is provided between the reduction output pinion and the front end cover 1-2 on the front end cover side.

[0036] Example 2, please refer to Figure 4 and Figure 5, an electric flip cover drive overload protection device is installed between the coaxially arranged reduction input gear 3 and the reduction output pinion 4 of one stage of the reduction mechanism 7 of the electric flip cover drive 1, the overload protection disk is connected to the reduction output pinion, and at least one set of mutually matching spherical protrusions 4-1 and spherical grooves 3-1 are provided between the mating surfaces of the overload protection disk 2 and the reduction input gear, and an elastic member 5 is provided on the transmission shaft between the reduction input gear and the mounting plate 1-3.

[0037] In the third embodiment, elastic members 5 may be provided on the transmission shaft between the reduction output pinion and the front end cover 1-2 and between the reduction input gear and the mounting plate 1-3.

[0038] The designs of the overload protection devices for the electric flip-top actuator described in Examples 1 through 3 above achieve effective protection against overloads by adding an overload protection disc between the large speed reduction input gear and the small speed reduction output gear, and ingeniously designing mutually cooperating spherical protrusions and grooves on the mating surfaces. This structure not only ensures stable transmission between the gears during normal operation, but also, in the event of an overload, the spherical protrusions and grooves enable the overload protection disc to respond promptly. The cushioning effect of the elastic member effectively absorbs and disperses the impact force generated by the overload, thereby preventing damage to the gears and motor due to excessive load. This significantly improves the durability and reliability of the electric flip-top actuator and extends the service life of the device.

[0039] Preferably, the reduction input gearwheel is provided with a groove, and the overload protection disc is embedded in the groove of the reduction input gearwheel. Under the action of the elastic member, the spherical protrusion and the spherical groove cooperate with each other to achieve power transmission. This design optimizes the structure of the reduction input gearwheel and specifically provides a groove for the overload protection disc to be embedded. This not only achieves a compact structure and effectively shortens the axial length, but also ensures the stability and efficiency of power transmission. Under the action of the elastic member, the precise cooperation between the spherical protrusion and the spherical groove ensures smooth power transmission even in overload conditions. At the same time, this design also provides a reliable mechanical buffer for overload protection, further enhancing the durability and reliability of the equipment.

[0040] Preferably, the elastic member is a spring or a butterfly spring, which enables the spherical protrusion and the spherical groove to cooperate with each other to achieve power transmission. The easy availability and low cost of the spring also make the overload protection device more economical and feasible in practical applications.

[0041] Preferably, a spring receiving groove is provided on the reduction input gear or the shaft seat 1-4 on the mounting plate side. Providing a spring receiving groove on the mounting plate side not only provides a stable mounting position for the spring, but also effectively shortens the axial length, making the overall structure more compact and improving the rationality of the design.

[0042] Preferably, the overload protection disc and the reduction output pinion are an integrated structure.

[0043] Preferably, the overload protection disc and the reduction output pinion are split and detachable connection structures.

[0044] Further preferably, a mounting hole 2-1 is provided at the center of the overload protection disk 2, and at least one torsion surface 2-2 for driving the overload protection disk to rotate is provided in the mounting hole, and a torsion portion 4-1 having the same cross-sectional shape as the mounting hole is provided on the reduction output pinion on the overload protection component side.

[0045] Further preferably, the mounting hole is a D-shaped hole (see Figure 6 and Figure 7 ), square hole (see Figure 8 and Figure 9 ), diamond-shaped holes (see Figure 10 and Figure 11 ) or oblong holes (see Figure 12 and Figure 13 ), it can also be a rectangle or a triangle.

[0046] For further optimization, please refer to Figure 14 and Figure 15 A spline groove 1-3 is provided at the center of the overload protection disk, and a spline 4-2 is provided at the end of the reduction output pinion 4 to cooperate with the spline groove.

[0047] The overload protection disc and the reduction output pinion are integrated or detachably connected, each with its own characteristics in terms of technical effects. The specific analysis is as follows:

[0048] 1. The integrated arrangement of the overload protection disc and the reduction output pinion has the following technical effects:

[0049] Compact structure: The integrated setting makes the overall structure more compact, reduces the connectors and assembly space between components, helps to reduce the size and weight of the equipment and improve space utilization.

[0050] Transmission efficiency: Due to the reduction of clearance and friction between components, transmission efficiency may be improved, reducing energy loss.

[0051] Reliability: The integrated structure can better ensure the matching accuracy and strength between components in design and manufacturing, thereby improving the overall reliability and service life of the equipment.

[0052] Maintenance costs: Although the integrated structure may require replacement of the entire assembly during repair, problems caused by loose or worn parts during routine maintenance may be reduced, thereby reducing maintenance costs to a certain extent.

[0053] 2. The detachable connection between the overload protection plate and the reduction output pinion has the following technical effects:

[0054] Repairability: Detachable connections allow for easy replacement of damaged components without replacing the entire assembly, reducing repair difficulty and cost.

[0055] Flexibility: According to needs, the reduction output pinion of different specifications or performance can be replaced to adapt to different working requirements, which improves the flexibility of the equipment.

[0056] Modular design: Detachable connections help achieve modular design of the equipment, allowing each component to be manufactured and tested independently, improving production efficiency and quality control.

[0057] Cost considerations: For certain high-value or easily damaged parts, the use of detachable connections can reduce procurement costs to a certain extent, because users only need to purchase the parts that need to be replaced rather than the entire assembly.

[0058] In summary, both the integrated design and the detachable connection between the overload protection plate and the reduction output pinion have their advantages. The integrated design is suitable for applications requiring high compactness, transmission efficiency, and reliability; the detachable connection is more suitable for applications requiring frequent maintenance and component replacement or for achieving modular design. In practical applications, the appropriate connection method should be selected based on specific needs and conditions.

[0059] This application also relates to a smart toilet lid, a seat and a toilet lid, as well as an electric flip driver for turning the toilet lid, see Figure 1 The electric flip-up driver includes a housing 1-1, a drive motor 6, a reduction mechanism 7 and an output shaft 8. The output shaft 8 is connected to the inside of the toilet cover and also includes an overload protection device.

[0060] The electric flap driver with the above-mentioned overload protection device is used in electric toilet flaps. Due to the addition of the overload protection device, its technical effect is significantly improved. This improvement enables the driver to quickly and effectively cut off power transmission when encountering an overload, thereby preventing the drive motor and reduction mechanism from being damaged due to long-term overload, effectively extending the service life of the driver. At the same time, the addition of the overload protection device also improves the operating stability and safety of the driver and reduces the risk of failure due to accidental overload. In addition, the design of this component makes the driver more convenient to maintain. When an overload occurs, only the clutch component needs to be replaced or repaired, which greatly reduces the cost and complexity of maintenance.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An overload protection device for an electric flip cover drive, characterized in that: It is installed between the coaxially arranged reduction input gear and the reduction output pinion of one stage of the reduction mechanism of the electric flip cover drive, the overload protection disk is connected to the reduction output pinion, and at least one set of spherical protrusions and spherical grooves that cooperate with each other are provided between the mating surfaces of the overload protection disk and the reduction input gear. An elastic component is provided on the transmission shaft between the reduction output pinion and the front end cover and / or between the reduction input gear and the mounting plate on the front end cover side.

2. The electric flip cover drive overload protection device according to claim 1, characterized in that: The deceleration input gear is provided with a groove, the overload protection disc is embedded in the groove of the deceleration input gear, and the spherical protrusion and the spherical groove cooperate with each other under the action of the elastic component to realize power transmission.

3. The overload protection device for the electric flip cover drive according to claim 1, characterized in that: The elastic component is a spring or a butterfly spring, which enables the spherical protrusion and the spherical groove to cooperate with each other to achieve power transmission.

4. The overload protection device for the electric flip cover drive according to claim 1, characterized in that: A spring receiving groove is provided on the reduction input gear or the shaft seat on the mounting plate side.

5. The overload protection device for the electric flip cover drive according to claim 1, characterized in that: The overload protection disc and the reduction output pinion are an integrated structure.

6. The overload protection device for the electric flip cover drive according to claim 1, characterized in that: The overload protection disc and the reduction output pinion are a split and detachable connection structure.

7. The overload protection device for the electric flip cover drive according to claim 6, characterized in that: A mounting hole is provided at the center of the overload protection disk, and at least one torsion surface for driving the overload protection disk to rotate is provided in the mounting hole. A torsion portion having the same cross-sectional shape as that of the mounting hole is provided on the reduction output pinion on the overload protection component side.

8. The overload protection device for the electric flip cover drive according to claim 7, characterized in that: The mounting hole is a D-shaped hole, a square hole, a diamond hole or an oblong hole.

9. The overload protection device for the electric flip cover drive according to claim 6, characterized in that: A spline groove is provided at the center of the overload protection disc, and a spline that matches the spline groove is provided at the end of the reduction output pinion.

10. An intelligent toilet lid, a seat and a toilet lid, and an electric flip driver for turning the toilet lid, characterized in that: The electric flip cover driver comprises a housing, a drive motor, a reduction mechanism and an output shaft, and also comprises an overload protection device according to any one of claims 1 to 9.

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