Power assembly for electric flip driver

Abstract

The utility model discloses a power assembly for an electric flip driver. The power assembly comprises a motor, an output shaft, a motor power reversing gear pair and a reduction gear pair, wherein the reversing transmission pair adopts a first-stage speed reduction reversing design, and can be a worm and gear transmission pair, a bevel gear pair formed by matching two bevel gears, or an end face gear transmission pair formed by matching an end face gear and a cylindrical gear; and the reduction gear pair comprises a secondary reduction input pinion which is coaxially arranged on the primary transmission shaft together with the worm gear, the driven bevel gear or the cylindrical gear, the pinion is meshed with a secondary output bull gear, and the secondary output bull gear is fixed between the partition plate and the front end cover through a secondary transmission shaft. The power assembly is compact in structure, high in shell strength and high in speed reduction efficiency, has an overload protection function, can output strong torque in a small size, and ensures that the automatic cover turning function of the intelligent closestool is stable and reliable.

Description

Technical Field

[0001] The utility model belongs to the technical field of intelligent home drive flipping, and in particular relates to a power assembly for an electric flip cover driver. Background Art

[0002] In today's rapidly developing smart home sector, a wide range of smart home appliances are emerging one after another, significantly enriching the market and significantly improving consumers' quality of life. Among them, smart toilets, as a key component of smart home products, have been enthusiastically sought after by consumers due to their convenient and intelligent features. One of the core functions of smart toilets is the automatic flap, which greatly enhances the user experience and makes toilet use more intelligent and user-friendly.

[0003] Smart toilets currently on the market generally use electric flap actuators to achieve automatic flap operation. However, due to internal space constraints, these actuators must be relatively compact, placing stringent requirements on the motor specifications. To meet installation space constraints, small motors are commonly used as power sources. While compact, these motors require specialized reduction gears and speed reduction devices to achieve the powerful output torque required to ensure smooth and stable automatic flap operation. The design and optimization of these devices are crucial to improving the performance of electric flap actuators.

[0004] Planetary gear reduction is commonly used in clamshell actuators. However, the direct connection of a single motor generally results in a long axial length and a cylindrical shape, limiting motor selection. This also increases the size of the motor if the output power is high, creating installation difficulties. For smart home applications, an additional mounting bracket is required, increasing installation complexity and cost.

[0005] To address the problems existing in the prior art, this application aims to design a powertrain for an electric clamshell drive that changes the direction of power input through a reversing gear pair, thereby shortening the lateral length and enabling its application within an easily installed square housing. This design will significantly enhance the ease of installation and applicability of the electric clamshell drive.

[0006] Therefore, in response to the problems and challenges existing in the existing technology, the utility model aims to develop a new type of electric flip-up driver, which can achieve powerful output torque in a compact size, ensure that the automatic flip-up function of the smart toilet is more stable and reliable, and further enhance the user experience. Utility Model Content

[0007] In response to the problems existing in the prior art, the utility model provides a power assembly for an electric flip-up drive that achieves powerful output torque in a compact size, ensuring that the automatic flip-up function of the smart toilet is more stable.

[0008] The utility model is realized in this way. A power assembly for an electric flip cover driver includes a motor and an output shaft, and is characterized in that it also includes a motor power reversing gear pair and a reduction gear pair;

[0009] The motor power reversing gear pair is a first-stage reduction reversing gear pair, including a worm gear transmission pair consisting of a worm gear and a worm, a bevel gear pair consisting of two bevel gears, or an end gear transmission pair consisting of an end gear and a cylindrical gear.

[0010] The reduction gear pair includes a secondary reduction input pinion coaxially mounted on the primary transmission shaft with the worm gear or driven bevel gear or cylindrical gear, the secondary reduction input pinion meshing with the secondary output gearwheel, the secondary output gearwheel being mounted between the partition and the front end cover through the secondary transmission shaft; the secondary output gearwheel is coaxially connected to the final input pinion, the final input pinion meshing with the final output gearwheel, and the final output gearwheel is mounted on the power output shaft.

[0011] Preferably, the secondary output gearwheel is coaxially connected to the final input gearwheel through an overload protection mechanism.

[0012] Preferably, the overload protection mechanism includes an elastic deformation part connected to the final input pinion, the elastic deformation part includes a rotating sleeve, and the outer circumference of the rotating sleeve is provided with at least two fan-shaped deformation bodies, and there is a gap between adjacent fan-shaped deformation bodies; the outer surface of the fan-shaped deformation body is provided with a tooth connection part, and the tooth connection part is engaged with the inner gear ring of the secondary output large gear.

[0013] Preferably, the overload protection mechanism includes an overload protection disk connected to the final input pinion, and the overload protection disk is embedded in the groove of the secondary output gearwheel. The mating surface between the overload protection disk and the groove is provided with mutually matching spherical protrusions or spherical grooves, and a clutch elastic component is provided on the secondary transmission shaft between the final input pinion and the front end cover and / or the secondary output gearwheel and the partition on the front end cover side.

[0014] Preferably, the rotating sleeve or the overload protection disc is integrally provided with the secondary reduction input pinion.

[0015] Preferably, the rotating sleeve and / or the overload protection disc are detachably connected to the secondary reduction input pinion.

[0016] Preferably, a mounting hole is provided in the center of the rotating sleeve or the overload protection disk, and at least one torsion surface for driving the rotating sleeve or the overload protection disk to rotate is provided in the mounting hole, and a torsion portion having the same cross-sectional shape as the mounting hole is provided on the secondary reduction input pinion on the overload protection component side.

[0017] Preferably, the mounting hole is a D-shaped hole, a square hole, a diamond-shaped hole or an oblong hole.

[0018] Preferably, a spline groove is provided at the center of the rotary sleeve, and a spline that matches the spline groove is provided at the end of the secondary reduction input pinion.

[0019] Preferably, there are 2-7 fan-shaped deformation bodies, and the tooth connection parts are all located in the middle of the fan-shaped deformation bodies.

[0020] The advantages and technical effects of this utility model are as follows: Through its innovative reversing gear pair design, this utility model successfully changes the power input direction and effectively shortens the horizontal length. This groundbreaking design allows the powertrain to fit perfectly within an easy-to-install square housing, greatly improving the installation convenience and applicability of the electric clamshell actuator. In the field of smart homes, especially in smart toilet applications, this design is undoubtedly a major technological innovation.

[0021] In addition to its ingenious design, this utility model also focuses on improving transmission efficiency and performance. Through independently designed reversing and reduction gear pairs, the reversing gear pair operates more efficiently through a direct gear transition and reduction mechanism, minimizing energy loss during transmission. This amplifies torque and meets the torque requirements of the flip cover. This design not only ensures smooth flipping but also enhances the stability and reliability of the entire system.

[0022] Furthermore, the reduction gear pair employed in this invention not only improves transmission efficiency but also significantly enhances transmission smoothness. This results in a smoother and quieter flip-top operation, providing a more comfortable user experience. Furthermore, the use of a gear reduction mechanism simplifies the manufacturing process, enhances installation convenience, ensures a high yield rate, and reduces production costs.

[0023] In summary, this utility model achieves a compact size and powerful output torque while ensuring the stability of the automatic lid flap function of the smart toilet, resulting in a significant overall technical effect. This innovative design not only brings new development opportunities to the smart toilet industry, but also lays a solid foundation for the further development of the smart home field. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the matching structure of the reversing gear pair and the reduction gear pair;

[0025] Figure 2 This is a schematic diagram of the structure of the overload protection mechanism in Example 1 of the present utility model;

[0026] Figure 3 yes Figure 2 Middle AA section view;

[0027] Figure 4 is a schematic diagram of the three-dimensional structure of the overload protection mechanism in Example 1;

[0028] Figure 5 is a schematic diagram of the three-dimensional structure of the elastic deformation portion in Example 1;

[0029] Figure 6 This is a schematic diagram of the D-shaped hole structure of the slewing sleeve of the overload protection mechanism;

[0030] Figure 7 This is a schematic diagram of the structure of the final stage input pinion that matches the D-shaped hole;

[0031] Figure 8 This is a schematic diagram of a square hole structure in which the mounting hole of the rotary sleeve of the overload protection mechanism is provided;

[0032] Figure 9 This is a schematic diagram of the structure of the final stage input pinion that fits with the square hole;

[0033] Figure 10 The mounting hole of the rotary sleeve of the overload protection mechanism is a schematic diagram of a diamond-shaped hole structure;

[0034] Figure 11 This is a schematic diagram of the structure of the final stage input pinion that matches the diamond hole;

[0035] Figure 12 This is a schematic diagram of the structure in which the mounting hole of the rotary sleeve of the overload protection mechanism is an oblong hole;

[0036] Figure 13 This is a schematic diagram of the structure of the final stage input pinion that matches the oblong hole;

[0037] Figure 14 This is a schematic diagram of the structure of a spline groove provided in the mounting hole of the rotary sleeve of the overload protection mechanism;

[0038] Figure 15 This is a schematic diagram of the structure of the final stage input pinion gear that cooperates with the spline groove;

[0039] Figure 16 This is a schematic diagram of the structure of the overload protection mechanism in Example 2 of the present utility model;

[0040] Figure 17 yes Figure 16 Middle BB cross-section;

[0041] Figure 18 It is a schematic diagram of the three-dimensional structure of the electric flip cover driver;

[0042] Figure 19 It is a schematic diagram of the structure without the rear end cover;

[0043] Figure 20 It is a schematic diagram of the structure without the front end cover;

[0044] Figure 21 yes Figure 19 Middle BB cross-section view.

[0045] In the figure, 10, intermediate housing; 101, partition; 102, power unit installation chamber; 103, reduction gear pair installation chamber; 104, support plate; 20, front end cover; 30, rear end cover; 40, motor; 50, motor power reversing gear pair; 51, worm gear; 52, worm; 60, reduction gear pair; 61, secondary reduction input pinion; 601, primary transmission shaft; 62, secondary output gear; 621, ring gear; 622, groove; 63, secondary transmission shaft; 64, final input pinion; 640, torsion portion; 641, spline; 65, final output gear; 70, power output shaft; 80, overload protection mechanism; 81, elastic deformation portion; 810, tooth connection portion; 82, rotating sleeve; 820, mounting hole; 821, torsion surface; 822, spline groove; 83, fan-shaped deformation body; 84, overload protection disk; 85, spherical protrusion; 86, spherical groove; 87, clutch elastic member. DETAILED DESCRIPTION

[0046] 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.

[0047] Example 1, please refer to Figure 1 , a power assembly for an electric clamshell drive, comprising a motor and an output shaft, and also comprising a motor power reversing gear pair and a reduction gear pair;

[0048] The motor power reversing gear pair is a first-stage reduction reversing gear pair, including a worm gear transmission pair consisting of a worm wheel 51 and a worm 52, a bevel gear pair consisting of two bevel gears, or an end gear transmission pair consisting of an end gear and a cylindrical gear.

[0049] From a design perspective, the present invention provides a variety of motor power reversing gear pair options, including worm gear pairs, bevel gear pairs, and face gear pairs. This embodiment prefers worm gear pairs; these different transmission pairs have their own characteristics and can meet the performance requirements of different application scenarios and needs. For example, in situations where a high transmission ratio and good self-locking properties are required, a worm gear pair can be selected; in applications that pursue compact structure and efficient transmission, a bevel gear pair is an ideal choice; and for scenarios that need to withstand large loads and maintain smooth transmission, the face gear pair can perform excellent performance.

[0050] This highly selective design not only enhances the adaptability and flexibility of the electric clamshell actuator, but also enables manufacturers to select the most appropriate transmission pair solution for production and application based on specific needs and cost considerations. This not only helps optimize product performance, but also achieves cost control and maximizes benefits while meeting market demand.

[0051] From a market application perspective, the utility model's wide range of technical options also provides manufacturers of smart home products, such as smart toilets, with more choices and possibilities. They can flexibly select the appropriate electric flap actuator solution based on product positioning, target market, and specific consumer needs, thereby creating smart home products that better meet market demands and consumer expectations.

[0052] Preferably, the reduction gear pair includes a secondary reduction input pinion 61 coaxially mounted on the primary transmission shaft 601 with the worm gear or driven bevel gear or cylindrical gear, the secondary reduction input pinion meshing with the secondary output gearwheel 62, the secondary output gearwheel being mounted between the partition and the front end cover through the secondary transmission shaft 63; the secondary output gearwheel is connected to the final input pinion 64 through the overload protection mechanism 80, the final input pinion meshing with the final output gearwheel 65, the final output gearwheel being mounted on the power output shaft 70, the power output shaft being mounted on the partition and the front end cover, and the power output shaft extending out of the front end cover.

[0053] As the core component of the electric flip cover drive, the design and performance of the reduction gear pair directly affect the overall performance of the drive.

[0054] First, the reduction gear pair can amplify torque. Due to the limited output torque of the motor, direct drive may not be able to meet the torque requirements of the flip cover. The reduction gear pair, however, reduces the motor's speed through gear meshing and simultaneously amplifies the torque, allowing the driver to output greater torque to meet the flip cover's requirements.

[0055] Secondly, the reduction gear pair can improve the smoothness of transmission. The meshing transmission mode of the gear pair is smooth and reliable, which can effectively reduce the impact and vibration during the transmission process, making the flip action more stable and quiet.

[0056] In addition, the reduction gear pair also has the advantages of compact structure and strong load-bearing capacity. Through reasonable gear design and layout, a large reduction ratio can be achieved in a small space while bearing a large load, meeting the volume and load-bearing requirements of the electric flip drive.

[0057] Furthermore, the reduction gear pair of the present invention can be designed with multiple reduction stages based on actual needs. In addition to the aforementioned secondary and final reduction stages, additional reduction stages can be added based on specific application scenarios and requirements. This multi-stage reduction design can further amplify torque, improve transmission smoothness and reliability, and better adapt to different application scenarios and requirements.

[0058] In the reduction gear pair of the electric flip drive, the design of connecting the secondary output large gear to the final input small gear through an overload protection mechanism brings significant technical effects to the entire transmission system.

[0059] First, the inclusion of an overload protection mechanism significantly enhances the safety and reliability of the reduction gear pair. Under normal operating conditions, the overload protection mechanism ensures stable transmission between the secondary output gear and the final input gear, ensuring smooth flip-up operation. However, if the transmission system encounters an overload, such as unusual resistance or a jam, the overload protection mechanism immediately activates, severing or weakening the transmission connection, effectively preventing damage to the motor and transmission components due to overload.

[0060] Secondly, the overload protection mechanism helps to extend the service life of the electric flip cover drive. By timely cutting off the overload transmission, the mechanism can prevent the transmission components from being worn or deformed due to long-term excessive load, thereby maintaining the good condition of the transmission system and extending its service life.

[0061] The overload protection mechanism also enhances the user experience of the electric flip drive. In the event of an abnormal situation, the mechanism can quickly respond and cut off the transmission, preventing abnormal flip movement or jamming, thereby ensuring smooth and comfortable use.

[0062] The addition of an overload protection mechanism to the reduction gear pair of the electric flip cover drive undoubtedly adds more reliability and safety. Specifically, the present invention provides two technical solutions for the overload protection mechanism, each of which brings unique technical effects and can be selected according to actual needs.

[0063] Specifically, see Figures 2 to 5 The overload protection mechanism described in Example 1 adopts the following technical solution: the overload protection mechanism 80 includes an elastic deformation portion 81 connected to the final input pinion 64. The elastic deformation portion includes a rotating sleeve 82. The outer circumference of the rotating sleeve is provided with at least two sector-shaped deformation bodies 83, and adjacent sector-shaped deformation bodies are spaced apart. There are 2-7 sector-shaped deformation bodies, and four are preferred in this embodiment. The tooth connection portion is located in the middle of the sector-shaped deformation body. The outer surface of the sector-shaped deformation body is provided with a tooth connection portion 810, which meshes with the meshing inner gear ring 621 of the secondary output large gear 62. When the transmission system encounters an overload, the sector-shaped deformation body will deform due to the excessive force, thereby changing the meshing state of the tooth connection portion and the meshing inner gear ring, cutting off or weakening the transmission connection. This design is not only simple in structure and easy to implement, but also has a rapid response and significant protection effect.

[0064] Furthermore, the rotating sleeve and the overload protection plate are connected to the final input pinion in an integrated structure, or they can be a separate structure; for example, the center of the rotating sleeve is provided with a mounting hole 820, which 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 The mounting hole is provided with at least one torsion surface 821 for driving the rotating sleeve to rotate, and the end of the final input pinion 64 on the overload protection component side is provided with a torsion portion 640 that is consistent with the cross-sectional shape of the mounting hole.

[0065] For example, the rotary sleeve and the final stage input pinion 64 are connected by a key, see Figure 14 and Figure 15 In this embodiment, a spline groove 822 is provided at the center of the rotating sleeve, and a spline 641 is provided at the end of the final stage input pinion gear to cooperate with the spline groove.

[0066] Both an integrated design and a detachable connection between the slewing sleeve and the final-stage input pinion have their advantages. The integrated design is suitable for applications requiring compactness, transmission efficiency, and reliability; the detachable connection is more suitable for applications requiring frequent maintenance and component replacement or achieving modular design. In practical applications, the appropriate connection method should be selected based on specific needs and conditions.

[0067] Example 2, please refer to Figure 16 and Figure 17The overload protection mechanism adopts the following technical solution; the overload protection mechanism includes an overload protection disk 84 connected to the final input pinion, the overload protection disk is embedded in the groove 622 of the secondary output gearwheel, and the mating surface between the overload protection disk and the groove is provided with a spherical protrusion 85 or a spherical groove 86 that cooperates with each other. A clutch elastic component 87 is provided on the secondary transmission shaft between the final input pinion and the front end cover and / or the secondary output gearwheel and the partition on the front end cover side. The clutch elastic component is preferably a spring or a butterfly spring. In this embodiment, it is arranged between the final input pinion and the front end cover.

[0068] This embodiment uses a method in which the overload protection disk cooperates with the groove of the secondary output gear. The overload protection disk is connected to the final input pinion and embedded in the groove of the secondary output gear. On the mating surface of the overload protection disk and the groove, spherical protrusions and spherical grooves that cooperate with each other are cleverly set, and the necessary elastic force is provided for the entire mechanism through the clutch elastic component. When the transmission system is overloaded, the spherical protrusion will be squeezed and moved, thereby changing the mating state of the overload protection disk and the groove in the secondary output gear, cutting off the transmission connection. This design not only has a significant protection effect, but also has a long service life and high stability.

[0069] In summary, both overload protection solutions offer significant benefits. The first, with its core sector-shaped deformable element, achieves a simple and rapid protection response; the second, through the clever combination of spherical protrusions and grooves, provides more stable and long-lasting protection. In practical applications, the appropriate overload protection solution can be selected based on specific needs and scenarios, ensuring a safer and more reliable reduction gear pair for electric clamshell actuators.

[0070] Application Example 1, please refer to Figures 18 to 21, an electric flip cover drive, comprising a housing, a power unit and a reduction gear pair installed in the housing, and an output shaft connected to the reduction gear pair, the housing comprising an intermediate housing 10 and a front cover 20 and a rear cover 30 installed at both ends of the intermediate housing; a partition 101 is provided in the intermediate housing, which divides the intermediate housing into two independent functional chambers, namely a power unit installation chamber 102 and a reduction gear pair installation chamber 103; the power unit installation chamber is installed with a support plate 104 in the power unit installation chamber, comprising a motor 40 as a power source, providing rotational power to drive the entire system; the output end of the motor is connected to a motor power reversing gear pair 50 capable of changing the power transmission direction of the motor output shaft, which is used to convert the rotation direction of the motor into a direction perpendicular to the motor shaft to reduce the defect of a direct connection method that occupies a large space; the reduction gear pair installation chamber is used to install a reduction gear pair 60 for deceleration and a power output shaft 70, the reduction gear pair with deceleration realizes torque amplification and thus drives the flip cover, and the power output shaft, as the final output component of the system, outputs the power transmitted by the reduction gear pair to an external device or mechanism.

[0071] The working principle of this electric flip-top drive is as follows: a motor 40 is installed in the power unit installation chamber 102 and serves as a power source to provide rotational power. The output end of the motor is connected to the motor power reversing gear pair 50, which can convert the motor's rotation direction to a direction perpendicular to the motor shaft, thereby reducing the space occupied by a direct connection. The converted power is transmitted to the reduction gear pair 60 in the reduction gear pair installation chamber 103. The reduction gear pair has a speed reduction function and can achieve torque amplification, thereby driving the flip-top. Finally, the power is output to an external device or mechanism, such as a toilet lid, through the power output shaft 70 to realize the flip-top action.

[0072] The above electric flip drive has the following effects:

[0073] Structural separation and functional optimization:

[0074] A partition installed within the intermediate housing divides the housing into two independent functional chambers: the power unit mounting chamber and the reduction gear pair mounting chamber. This separation effectively isolates the interaction between the motor and its power reversing gear pair and the reduction gear pair and power output shaft, improving the overall operational stability and reliability of the drive. Each chamber is dedicated to its specific function, helping to optimize space utilization and making the drive's internal structure more compact and organized.

[0075] Improved structural strength and durability:

[0076] The housing consists of an intermediate housing, a front cover, and a rear cover. This segmented design facilitates the use of stronger materials or thicker walls, thereby improving the overall structural strength of the housing and reducing the risk of deformation due to external forces. This enhances the stability and durability of the driver during long-term operation or when subjected to large reaction forces, extending its service life.

[0077] Simplified installation and maintenance:

[0078] By dividing the drive into multiple independent functional modules and installing them in separate compartments, the installation process is simplified. Users or maintenance personnel can more easily access and replace individual components, reducing maintenance costs and time. This modular design also helps quickly locate the problem in the event of a fault, improving repair efficiency.

[0079] Improve transmission efficiency and performance:

[0080] The independent design of the power unit and reduction gear assembly compartments enables the motor and reduction gear pair to operate more efficiently, reducing energy loss during transmission and improving transmission efficiency. This design also helps optimize the transmission ratio and power output, allowing the driver to more accurately control the movement of the clamshell, improving overall performance.

[0081] 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. A powertrain for an electric clamshell driver, comprising a motor and an output shaft, characterized in that: It also includes a motor power reversing gear pair and a reduction gear pair; The motor power reversing gear pair is a first-stage reduction reversing gear pair, including a worm gear transmission pair consisting of a worm gear and a worm, a bevel gear pair consisting of two bevel gears, or an end gear transmission pair consisting of an end gear and a cylindrical gear. The reduction gear pair includes a secondary reduction input pinion coaxially mounted on the primary transmission shaft with the worm gear or driven bevel gear or cylindrical gear, the secondary reduction input pinion meshing with the secondary output gearwheel, the secondary output gearwheel being mounted between the partition and the front end cover through the secondary transmission shaft; the secondary output gearwheel is coaxially connected to the final input pinion, the final input pinion meshing with the final output gearwheel, and the final output gearwheel is mounted on the power output shaft.

2. The power assembly for the electric flip cover driver according to claim 1, characterized in that: The secondary output gear is coaxially connected to the final input pinion through an overload protection mechanism.

3. The power assembly for the electric flip cover driver according to claim 2, characterized in that: The overload protection mechanism includes an elastic deformation part connected to the final input pinion, and the elastic deformation part includes a rotating sleeve. The outer circumference of the rotating sleeve is provided with at least two sector-shaped deformation bodies, and there is a gap between adjacent sector-shaped deformation bodies; the outer surface of the sector-shaped deformation body is provided with a tooth connection part, and the tooth connection part is engaged with the inner gear ring of the secondary output large gear.

4. The power assembly for the electric flip cover driver according to claim 3, characterized in that: The overload protection mechanism includes an overload protection disk connected to the final input pinion, and the overload protection disk is embedded in the groove of the secondary output gearwheel. The mating surface between the overload protection disk and the groove is provided with a spherical protrusion or a spherical groove that cooperates with each other. A clutch elastic component is provided on the secondary transmission shaft between the final input pinion and the front end cover and / or the secondary output gearwheel and the partition on the front end cover side.

5. The power assembly for the electric flip cover driver according to claim 3 or 4, characterized in that: The slewing sleeve or the overload protection disc is integrally arranged with the secondary reduction input pinion.

6. The power assembly for the electric flip cover drive according to claim 3 or 4, characterized in that: The rotating sleeve and / or the overload protection disc are detachably connected to the secondary reduction input pinion.

7. The power assembly for the electric flip cover driver according to claim 6, characterized in that: A mounting hole is provided at the center of the rotating sleeve or the overload protection disk, and at least one torsion surface for driving the rotating sleeve or 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 secondary reduction input pinion on the overload protection component side.

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

9. The power assembly for the electric flip cover driver according to claim 7, characterized in that: A spline groove is provided at the center of the rotary sleeve, and a spline that matches the spline groove is provided at the end of the secondary reduction input pinion.

10. The power assembly for the electric flip cover driver according to claim 7, characterized in that: There are 2-7 fan-shaped deformation bodies, and the tooth connection parts are all located in the middle of the fan-shaped deformation bodies.

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