Torque-eliminating transmission and motorized cleaning brush

Abstract

The utility model relates to a transmission device and electric cleaning brush using the device can eliminate torsion, transmission device has: support structure, driving shaft, force transmission mechanism and two rotators, first rotator is connected with driving shaft, makes driving shaft to rotate and directly drive first rotator to rotate, force transmission mechanism has the driving gear, multiple transition gear and output gear that mesh transmission in proper order, the power of driving shaft is led out and is used to drive second rotator, makes second rotator and first rotator present the rotation of opposite rotation, and second rotator and first rotator form inside and outside double -deck working body, the utility model can eliminate the torsion of working process, makes first, second rotator rotation steady, smooth, is used to electric cleaning brush, can realize the synchronous opposite rotation of inside and outside layer's bristle, can let the cleaned part receive different direction's tension, improve cleaning intensity, and the cleaning brush head whole will not have the deviation, when using, more stable, operation experience is better.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission equipment technology, and in particular to a transmission structure suitable for electric cleaning brushes, grinders, waxers and other tools that require rotational output. Background Technology

[0002] People frequently perform cleaning tasks in daily life, and specialized cleaning solutions, along with brushes and scouring pads, are the most commonly used.

[0003] Household cleaning involves a variety of types of dirt, adhering to various material surfaces and distributed in multiple locations, making cleaning time-consuming and labor-intensive. To save manpower, many people choose to use electric brushes. Traditional electric cleaning brushes typically have a single, unidirectional brush head, which suffers from poor cleaning intensity, limited cleaning modes, small cleaning area, and low cleaning efficiency, failing to meet current cleaning needs. Subsequently, electric cleaning brushes with double-layer brush heads emerged, using two brush heads with different directions to scrub the cleaning area in different directions, thereby improving cleaning effectiveness. However, existing double-layer brush heads mainly rely on planetary gear sets for transmission. Not only do the inner and outer brush heads output different speeds, but the transmission torque is also relatively large, making the brush head prone to jumping, resulting in overall instability and a poor user experience. Summary of the Invention

[0004] The purpose of this invention is to provide a transmission device that can eliminate torque and an electric cleaning brush using the transmission device, which can effectively improve brush head jumping and other issues, and enhance performance.

[0005] To achieve the above objectives, the present invention provides a transmission device capable of eliminating torque, which has the following features: Support structure, The drive shaft is mounted on the support structure and can be driven to rotate. The first rotating component has a first rotating seat and a first working unit disposed on the first rotating seat; the first rotating component is connected to the drive shaft through the first rotating seat, so that the drive shaft directly drives the first rotating component to rotate when it rotates. The force transmission mechanism has a driving gear, multiple intermediate gears, and an output gear that draws power from the driving shaft. The driving gear is assembled on the driving shaft, and the intermediate gears and output gear are mounted on the support structure to realize the sequential meshing and transmission of the driving gear, multiple intermediate gears, and output gear. The direction of the output gear is opposite to that of the driving gear. The output gear drives a turntable to rotate synchronously. The turntable is positioned on the support structure and is provided with a first quick connector. The second rotating component has a second rotating seat and a second working unit disposed on the second rotating seat; the second rotating component is connected to the first quick connector of the turntable through the second rotating seat, so that the output gear drives the second rotating component to rotate through the turntable. The second rotating component and the first rotating component form an inner and outer double-layer working body, and the second rotating component and the first rotating component rotate in opposite directions.

[0006] The above scheme is further described in that the second rotating component is an annular body, and the first rotating component is embedded inside the second rotating component, and the first rotating component, the second rotating component, the turntable, the output gear and the drive gear are coaxially arranged according to the axis of the drive shaft.

[0007] A further aspect of the above scheme is that one end of the drive shaft is connected to a motor, which is fixed on the support structure; the other end of the drive shaft is equipped with a second quick connector, which is used to connect with the first rotating component; the drive shaft passes through the output gear, the turntable and the second rotating component, and the output gear, the turntable and the second rotating component are all in an idle relationship with the drive shaft.

[0008] A further aspect of the above scheme is that the output gear has a shaft segment extending along the drive shaft, which is axially connected to the turntable, and the shaft segment is mounted on the support structure by bearings, while the turntable is positioned on the support structure by the shaft segment and extends out from the support structure.

[0009] The above scheme is further described in that the drive shaft is composed of a motor shaft and an extension shaft. One end of the extension shaft passes through the output gear and the turntable in sequence and is connected to the motor shaft. The other end of the extension shaft forms a second quick connector. The second quick connector has an outer convex ring and a polygonal tenon protruding downward from the outer convex ring. The polygonal tenon is adapted to be inserted into a preset polygonal hole on the first rotating seat of the first rotating component.

[0010] The above scheme is further described as follows: the support structure is constructed by combining an upper plate and a lower plate. The upper plate is provided with a downwardly protruding positioning post, while the lower plate is provided with an upwardly protruding positioning seat, and the positioning seat has an upwardly opening positioning hole. The upper plate and the lower plate are combined to form a sandwich structure by inserting the positioning post into the positioning hole, so that space can be provided between the upper plate and the lower plate to install the force transmission mechanism; the drive shaft is arranged along the geometric center line of the support structure.

[0011] A further aspect of the above scheme is that a motor is installed on the upper side of the upper plate, the central axis of the motor is perpendicular to the upper plate, and the motor is installed in the center of the upper plate.

[0012] A further aspect of the above solution is that the lower plate has a through clearance hole in its inner center, which is adapted to allow the shaft segment of the output gear to be inserted into and nested with a bearing, and the shaft segment of the output gear is axially connected to the turntable through the clearance hole; a bearing cover is assembled on the lower side of the lower plate, which is used to fix the bearing.

[0013] A further aspect of the above scheme is that the first quick connector of the turntable is a downwardly protruding ring platform, and the outer circumferential surface of the ring platform has a cut surface; the second rotating seat of the corresponding second rotating component is provided with a sleeve interface suitable for connecting the first quick connector.

[0014] This utility model provides an electric cleaning brush, the brush head of which has the aforementioned transmission device that can eliminate torque, and the first working unit and the second working unit are bristles.

[0015] Compared with the prior art, the present invention, by adopting the above structure, not only achieves synchronous forward and reverse rotation of the first and second rotating parts, but also eliminates the need for planetary gear transmission, which helps to eliminate torque during the working process, making the first and second rotating parts rotate smoothly and stably. The structure is compact, scientific and reasonable, and can be used in electric cleaning brushes, polishers, waxers and other tools, which can greatly improve work efficiency and user experience.

[0016] The electric cleaning brush provided by this utility model uses the aforementioned transmission device to achieve synchronous opposite rotation of the inner and outer layers of bristles, which can subject the cleaned area to tension in different directions, improve cleaning intensity, and prevent the overall cleaning brush head from shifting, making it more stable during use and providing a better operating experience. Attached Figure Description

[0017] Appendix Figure 1 This is a schematic diagram of a preferred embodiment of the present invention; Appendix Figure 2 for Figure 1 A structural decomposition diagram; Appendix Figure 3 for Figure 1 A cross-sectional view of the internal structure of the embodiment. Detailed Implementation

[0018] The following will further explain the concept, specific structure and technical effects of the utility model in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of the utility model.

[0019] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These terms are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] See Figure 1 , 2Figure 3 shows a schematic diagram of a preferred embodiment of the present invention. The present invention relates to a transmission device capable of eliminating torque, comprising: a support structure 1, a drive shaft 2, a first rotating member 3, a force-shaping transmission mechanism 4, and a second rotating member 5. The support structure 1 provides mounting support and can be coupled to a corresponding appliance. The drive shaft 2 is mounted on the support structure 1 and can be driven to rotate for power output. The first rotating member has a first rotating seat 31 and a first working unit 32 disposed on the first rotating seat. The first rotating member is connected to the drive shaft 2 through the first rotating seat 31, so that when the drive shaft rotates, it directly drives the first rotating member 3 to rotate, thereby obtaining a first working output. This power transmission mechanism has a drive gear 41 that draws power from the drive shaft 2, multiple transition gears 42, and an output gear 43. The drive gear 41 is assembled on the drive shaft 2, and the transition gears 42 and the output gear 43 are mounted on the support structure 1, realizing the sequential meshing and transmission of the drive gear, multiple transition gears, and output gear. The direction of the output gear is opposite to that of the drive gear, thereby splitting the power from the drive shaft 2 and creating an output with the opposite direction. The output gear drives a turntable 44 to rotate synchronously. The turntable 44 is positioned on the support structure 1 and is equipped with a first quick connector 441 for subsequent rapid connection. In this embodiment, the drive gear, multiple transition gears, and output gear are all spur gears, which are convenient for manufacturing and assembly. There are three transition gears, defined as the first transition gear 42a, the second transition gear 42b, and the third transition gear 42c. The number of transition gears can also be set according to actual needs and is not limited here. In this embodiment, the first transition gear 42a and the second transition gear 42b are coaxially connected in series. The first transition gear 42a meshes with the driving gear 41, while the second transition gear 42b meshes with the third transition gear 42c. The third transition gear 42c also meshes with the output gear 43, achieving multi-stage transmission and making the direction of the output gear opposite to that of the driving gear. The second rotating member 5 has a second rotating seat 51 and a second working unit 52 disposed on the second rotating seat. The second rotating member is connected to the first quick connector 441 of the turntable 44 through the second rotating seat, so that the output gear 43 drives the second rotating member 5 to rotate through the turntable 44, obtaining a second working output. At the same time, the second rotating member 5 and the first rotating member 3 form an inner and outer double-layer working body, and the second rotating member and the first rotating member rotate in opposite directions, improving efficiency. This utility model not only realizes the synchronous forward and reverse rotation of the first and second rotating members, but also eliminates the need for planetary gear transmission, which helps to eliminate torque during the working process and makes the rotation of the first and second rotating members smooth and stable. The rotational speeds of the first and second rotating parts can be the same or different, depending on actual needs, to meet different working requirements.

[0021] Figure 1 , 2As shown in Figure 3, in this embodiment, the second rotating member 5 is an annular body, while the first rotating member 3 is embedded inside the second rotating member, resulting in a compact structure. Furthermore, the first rotating member 3, the second rotating member 5, the turntable 44, the output gear 43, and the drive gear 41 are coaxially arranged along the axis of the drive shaft 2. This coaxial arrangement effectively reduces the transmission distance, eliminates torque, and ensures that the center of gravity of rotation is on the set axis, preventing deviation and jumping.

[0022] In this embodiment, one end of the drive shaft 2 is connected to a motor 6, which is fixed to the support structure 1; the other end of the drive shaft 2 is equipped with a second quick connector 21, which is used to connect with the first rotating component 3, enabling quick assembly and disassembly, and facilitating the replacement and maintenance of the first rotating component 3. The drive shaft 2 passes through the output gear, the turntable, and the second rotating component, and the output gear, the turntable, and the second rotating component all form an idle relationship with the drive shaft, effectively avoiding interference. The structure is compact and stable, and does not affect the direct output drive of the drive shaft 2 to the first rotating component 3. In this embodiment, for ease of manufacturing and assembly, the drive shaft 2 is composed of a motor shaft 22 and an extension shaft 23. One end of the extension shaft 23 passes through the output gear and the turntable in sequence and is connected to the motor shaft 22. The other end of the extension shaft forms a second quick connector 21. The second quick connector 21 has an outer convex ring 211 and a polygonal tenon 212 protruding downward from the outer convex ring 211. The polygonal tenon 212 is adapted to be inserted into the preset polygonal hole 311 on the first rotating seat 31 of the first rotating component to achieve quick connection. The outer convex ring 211 provides insertion positioning and increases the connection structure with the first rotating seat 31, so as to achieve reliable and stable power output.

[0023] The output gear 43 has a shaft segment 431 extending along the drive shaft. This shaft segment 431 is axially connected to the turntable 44, and the shaft segment 431 is embedded in the support structure 1 via a bearing 45. The turntable 44 is positioned on the support structure by the shaft segment and extends out from the support structure. In this embodiment, the support structure 1 is constructed by combining an upper plate 11 and a lower plate 12. The upper plate 11 is provided with a downwardly protruding positioning post 111, while the lower plate 12 is provided with an upwardly protruding positioning seat 121, and the positioning seat has an upwardly opening positioning hole 122. The upper plate and the lower plate are combined to form a sandwich structure by inserting the positioning post 111 into the positioning hole 122, so that space can be provided between the upper plate and the lower plate to install the force transmission mechanism 4. In this embodiment, there are three positioning columns 111 that are evenly distributed around the center of the upper plate 11 in a triangle. After the upper and lower plates are combined, a stable geometric structure is obtained. The drive shaft 2 is arranged along the geometric center line of the support structure 1 and passes through the upper and lower plates. After installation, the upper and lower ends of the drive shaft 2 are effectively supported and rotate on the geometric center line of the support structure 1, further improving the overall rotational stability.

[0024] In this embodiment, a motor 6 is mounted on the upper side of the upper plate 11. The motor 6 is installed in the center of the upper plate, and the central axis of the motor is perpendicular to the upper plate. The stacked assembly is compact and facilitates the arrangement of the drive shaft 2 along the geometric center line of the support structure 1. The lower plate 12 has a through clearance hole 123 in its inner center. The clearance hole 123 is adapted to accommodate the shaft segment of the output gear, which is inserted into and nested with a bearing. The shaft segment of the output gear is axially connected to the turntable through the clearance hole. In this embodiment, the shaft segment of the output gear is axially fitted to the turntable and then fixed by screws to form a coaxial linkage, which is convenient for manufacturing, assembly and maintenance. A bearing cover 7 is assembled on the lower side of the lower plate 12. The bearing cover 7 is used to fix the bearing 45. The first quick connector 441 of the turntable 44 is a downwardly protruding ring platform with a chamfered surface on its outer circumference to meet the requirements of rotational transmission. The second rotating seat 51 of the corresponding second rotating component is provided with a sleeve interface 511 adapted to connect to the first quick connector, which is convenient for the disassembly, maintenance and replacement of the second rotating component.

[0025] The transmission device provided by this utility model does not require planetary gear transmission, which helps to eliminate torque during the working process and makes the first and second rotating parts rotate smoothly and stably. It can be used in electric cleaning brushes, polishers, waxers and other tools, which can greatly improve work efficiency and user experience.

[0026] Furthermore, this utility model provides an electric cleaning brush, which has a corresponding main body and a brush head. The brush head adopts the aforementioned transmission device that can eliminate torque. In this case, the first working unit and the second working unit are bristles, forming an inner and outer double layer of bristles. The inner and outer double layers of bristles rotate synchronously in opposite directions, which can make the area being cleaned subject to tension in different directions, thereby improving the cleaning intensity. Moreover, the cleaning brush head as a whole will not shift, making it more stable during use and providing a better operating experience.

[0027] While the preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention should not be limited to the same structure and operation as described above and the accompanying drawings. For those skilled in the art, many equivalent improvements and variations can be made to the above embodiments through logical analysis, reasoning or limited experiments without exceeding the concept and scope of the present invention, but these improvements and variations should all fall within the scope of protection claimed by the present invention.

Claims

1. A transmission device capable of eliminating torque, characterized in that, have: Support structure (1) The drive shaft (2) is mounted on the support structure (1) and can be rotated by a drive. The first rotating component (3) has a first rotating seat (31) and a first working unit (32) disposed on the first rotating seat; the first rotating component is connected to the drive shaft (2) through the first rotating seat (31), so that the drive shaft directly drives the first rotating component (3) to rotate when it rotates; The force transmission mechanism (4) has a drive gear (41) that draws out the power from the drive shaft (2), multiple transition gears (42) and an output gear (43). The drive gear (41) is assembled on the drive shaft (2), and the transition gears (42) and output gear (43) are mounted on the support structure (1) to realize the sequential meshing and transmission of the drive gear, multiple transition gears and output gear. The direction of the output gear is opposite to the direction of the drive gear. The output gear drives a turntable (44) to rotate synchronously. The turntable (44) is positioned on the support structure (1) and is provided with a first quick connector (441). The second rotating component (5) has a second rotating seat (51) and a second working unit (52) disposed on the second rotating seat. The second rotating component is connected to the first quick connector (441) of the turntable (44) through the second rotating seat, so that the output gear (43) drives the second rotating component (5) to rotate through the turntable (44). The second rotating component (5) and the first rotating component (3) form an inner and outer double-layer working body, and the second rotating component and the first rotating component rotate in opposite directions.

2. The torque-eliminating transmission device according to claim 1, characterized in that, The second rotating member (5) is an annular body, and the first rotating member (3) is embedded inside the second rotating member. The first rotating member (3), the second rotating member (5), the turntable (44), the output gear (43) and the drive gear (41) are coaxially arranged according to the axis of the drive shaft (2).

3. The torque-eliminating transmission device according to claim 1 or 2, characterized in that, One end of the drive shaft (2) is connected to a motor (6), which is fixed on the support structure (1); the other end of the drive shaft (2) forms a second quick connector (21), which is used to connect with the first rotating component (3); the drive shaft (2) passes through the output gear, the turntable and the second rotating component, and the output gear, the turntable and the second rotating component are all in an idle relationship with the drive shaft.

4. The torque-eliminating transmission device according to claim 3, characterized in that, The output gear (43) has a shaft segment (431) extending along the drive shaft, which is axially connected to the turntable (44), and the shaft segment (431) is mounted on the support structure (1) by a bearing (45), and the turntable (44) is positioned on the support structure by the shaft segment and extends out from the support structure.

5. The torque-eliminating transmission device according to claim 3, characterized in that, The drive shaft (2) is composed of a motor shaft (22) and an extension shaft (23). One end of the extension shaft (23) passes through the output gear and the turntable in sequence and is connected to the motor shaft (22). The other end of the extension shaft forms a second quick connector (21). The second quick connector (21) has an outer convex ring (211) and a polygonal tenon (212) protruding downward from the outer convex ring. The polygonal tenon (212) is adapted to be inserted into the preset polygonal hole (311) on the first rotating seat (31) of the first rotating member.

6. The torque-eliminating transmission device according to claim 4, characterized in that, The support structure (1) is constructed by combining an upper plate (11) and a lower plate (12). The upper plate (11) is provided with a downwardly protruding positioning post (111), while the lower plate (12) is provided with an upwardly protruding positioning seat (121), and the positioning seat is provided with an upwardly opening positioning hole (122). The upper plate and the lower plate are combined to form a sandwich structure by inserting the positioning post (111) into the positioning hole (122), so that space can be provided between the upper plate and the lower plate to install the force transmission mechanism (4); the drive shaft (2) is arranged along the geometric center line of the support structure (1).

7. The torque-eliminating transmission device according to claim 6, characterized in that, A motor (6) is installed on the upper side of the upper plate (11). The motor (6) is installed in the center of the upper plate, and the central axis of the motor is perpendicular to the upper plate.

8. The torque-eliminating transmission device according to claim 6, characterized in that, The lower plate (12) has a through clearance hole (123) in the middle of its interior. The clearance hole (123) is adapted to allow the shaft segment of the output gear to be inserted and nested with the bearing. The shaft segment of the output gear is axially connected to the turntable through the clearance hole. The lower side of the lower plate (12) is equipped with a bearing cover (7), which is used to fix the bearing.

9. The torque-eliminating transmission device according to claim 1, characterized in that, The first quick connector (441) of the turntable (44) is a downwardly protruding ring platform, and the outer circumferential surface of the ring platform has a cut surface; the second rotating seat (51) of the corresponding second rotating component is provided with a sleeve interface (511) adapted to connect to the first quick connector.

10. An electric cleaning brush, characterized in that, The brush head of the electric cleaning brush has a torque-eliminating transmission device as described in any one of claims 1 to 9, and the first working unit and the second working unit are bristles.

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