Reduction gearbox connecting structure and floor washing robot

Abstract

The invention discloses a reduction gearbox connecting structure and a floor washing robot. The reduction gearbox connecting structure comprises a transmission wheel, a planet wheel set and a connecting assembly, the planet wheel set comprises a planet carrier, an inner gear ring, a center wheel and a plurality of planet wheels, the driving motor is provided with an output shaft, the center wheel is installed on the output shaft, and the planet wheels are connected with the planet carrier and meshed with the periphery of the center wheel at intervals. The inner gear ring is meshed with the planet wheels, and the ground brush assembly is in transmission connection with the transmission wheel. The connecting assembly comprises a first connecting component and a second connecting component, and the first connecting component is connected with the transmission wheel and movably connected with the planet carrier, so that the planet carrier is connected with or separated from the transmission wheel; the second connecting component is connected with the transmission wheel and movably connected with the center wheel so that the center wheel can be connected with or separated from the transmission wheel. According to the technical scheme, the reduction gearbox connecting structure can improve the cleaning efficiency and the cleaning effect of the floor washing robot.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning equipment, and in particular to a reduction box connection structure and a floor cleaning robot having the reduction box connection structure. Background Art

[0002] As an efficient cleaning device, floor scrubber robots are widely used in commercial and industrial environments, such as large shopping malls, warehouses, and production workshops. They can effectively remove dirt and grease from the ground through the combination of water and detergent, and the rotation of the floor brush head, thereby improving the cleanliness and safety of the ground. Among the core components of the floor scrubber robot, the reduction gearbox plays a vital role, and its design directly affects the performance and cleaning effect of the equipment. The main function of the reduction gearbox of the floor scrubber robot is to convert the high-speed rotation of the motor into the lower speed required by the floor scrubber, thereby providing power suitable for floor cleaning, and enabling the floor scrubber robot to provide sufficient torque at high-speed rotation to cope with various cleaning tasks.

[0003] However, the reduction gearbox of this type of floor scrubber robot currently has some shortcomings. Its transmission ratio is fixed, and the output torque cannot be changed by simple adjustment. This means that for different types of floor cleaning tasks, such as cleaning hard, rough floors such as concrete or cleaning smooth, soft and easily worn surfaces such as floor tiles, the floor scrubber robot cannot be adjusted according to actual needs. As a result, when faced with some more complex cleaning needs, the efficiency and cleaning effect of the floor scrubber robot are insufficient. Summary of the invention

[0004] The main purpose of the present invention is to provide a reduction box connection structure and a floor scrubber robot using the reduction box connection structure, aiming to improve the cleaning efficiency and cleaning effect of the floor scrubber robot.

[0005] To achieve the above-mentioned purpose, the reduction gearbox connection structure proposed in the present invention is applied to a floor-cleaning robot, wherein the floor-cleaning robot includes a driving motor and a floor brush assembly; The reduction box connection structure comprises: A transmission wheel, the transmission wheel is transmission-connected to the floor brush assembly; A planetary gear set, the planetary gear set comprising a planet carrier, an inner gear ring, a center wheel and a plurality of planetary wheels, the drive motor having an output shaft, the center wheel being mounted on the output shaft, the plurality of planetary wheels being connected to the planet carrier and meshing with the periphery of the center wheel at intervals, the inner gear ring being meshed with the plurality of planetary wheels; and A connecting component, the connecting component includes a first connecting member and a second connecting member, the first connecting member is connected to the transmission wheel and is movably connected to the planet carrier to connect or separate the planet carrier from the transmission wheel; the second connecting member is connected to the transmission wheel and is movably connected to the center wheel to connect or separate the center wheel from the transmission wheel.

[0006] Optionally, the first connecting member includes a first connecting rod, a first connecting hole is provided in the axial direction of the transmission wheel, a second connecting hole is provided in the planetary carrier at a position corresponding to the first connecting hole, one end of the first connecting rod passes through the first connecting hole and can be movably inserted into the second connecting hole to connect or separate the planetary carrier and the transmission wheel.

[0007] Optionally, the second connecting member includes a second connecting rod, and a third connecting hole is also provided in the axial direction of the transmission wheel. The third connecting hole is spaced apart from the first connecting hole. The center wheel has a mounting hole, and the output shaft is inserted into one end of the mounting hole. One end of the second connecting rod passes through the third connecting hole and is movably connected to an end of the mounting hole away from the output shaft, so that the center wheel is connected or separated from the transmission wheel.

[0008] Optionally, the planetary carrier includes a fixed plate and a mounting column connected to the fixed plate, the mounting column is located in the middle position of the fixed plate, a plurality of planetary gears are connected to the fixed plate, the mounting column is provided with the second connecting hole, the mounting column is also provided with a through fourth connecting hole, the extension direction of the fourth connecting hole is the same as the extension direction of the second connecting hole, the second connecting rod passes through the third connecting hole and the fourth connecting hole in sequence and is movably connected to the mounting hole.

[0009] Optionally, a side of the mounting column close to the center wheel is further provided with an avoidance hole, the avoidance hole is connected to the fourth connecting hole, and the second connecting rod is movable to be connected to the center wheel or separated from the center wheel and received in the avoidance hole.

[0010] Optionally, an outer wall of one end of the first connecting rod is provided with a first external thread, a hole wall of the second connecting hole is provided with a first internal thread, and the first external thread matches the first internal thread; The outer wall of the second connecting rod is provided with a second external thread, and the hole walls of the third connecting hole, the fourth connecting hole and the mounting hole are all provided with a second internal thread, and the second external thread matches the second internal thread.

[0011] Optionally, the first connecting member further comprises a first limiting ring, which is mounted on a rod wall of the first connecting rod, and the first connecting rod is movable, and the first limiting ring can abut against a side of the transmission wheel away from the planet carrier; The second connecting member also includes a second limiting ring, which is installed on the rod wall of the second connecting rod. There is a gap between the second limiting ring and the first limiting ring. The second connecting rod is movable and can make the second limiting ring abut against the side of the transmission wheel away from the planetary carrier.

[0012] Optionally, an operating part is provided at one end of the first connecting rod away from the second connecting hole, the floor cleaning robot has a shell, the reduction gearbox connecting structure is arranged in the shell, the first connecting rod is movable, and the first limiting ring can abut against the inner wall of the shell, and the shell is also provided with an operating port corresponding to the position of the first connecting rod, and the operating part is exposed through the operating port.

[0013] Optionally, the central axis of the second connecting member coincides with the central axis of the transmission wheel, and a plurality of first connecting members are provided, and the plurality of first connecting members are arranged around the periphery of the central axis of the second connecting member.

[0014] The present invention further provides a floor scrubbing robot, the floor scrubbing robot comprising a driving motor, a floor brush assembly and a reduction box connection structure, the reduction box connection structure comprising: A transmission wheel, the transmission wheel is transmission-connected to the floor brush assembly; A planetary gear set, the planetary gear set comprising a planet carrier, an inner gear ring, a center wheel and a plurality of planetary wheels, the drive motor having an output shaft, the center wheel being mounted on the output shaft, the plurality of planetary wheels being connected to the planet carrier and meshing with the periphery of the center wheel at intervals, the inner gear ring being meshed with the plurality of planetary wheels; and A connecting component, the connecting component includes a first connecting member and a second connecting member, the first connecting member is connected to the transmission wheel and is movably connected to the planet carrier to connect or separate the planet carrier from the transmission wheel; the second connecting member is connected to the transmission wheel and is movably connected to the center wheel to connect or separate the center wheel from the transmission wheel.

[0015] The reduction box connection structure of the technical solution of the present invention, in actual use, when the first connecting member is active and connects the transmission wheel and the planetary carrier, the second connecting member can be made active and separated from the center wheel on the output shaft of the drive motor. In this way, when transmission occurs, the output shaft of the drive motor drives the center wheel to rotate, and then transmits it to the transmission wheel through the planetary wheel, the planetary carrier, and the first connecting member in sequence, so that the speed of the output shaft of the drive motor is transmitted to the transmission wheel through the planetary gear set for transmission output, thereby achieving a larger reduction ratio; and when the first connecting member is active and separates the transmission wheel and the planetary carrier, the second connecting member can be made active and connect the transmission wheel and the center wheel. In this way, when transmission occurs, the output shaft of the drive motor drives the center wheel to rotate, and the transmission can be directly driven by the second connecting member to drive the transmission wheel, and a smaller reduction ratio can be achieved without passing through the planetary gear set. Therefore, by changing the transmission ratio through the connecting assembly, the output torque can be effectively adjusted, which means that the working mode of the floor scrubber robot can be simply switched according to the cleaning needs of different floors. For example, when cleaning hard floors, a larger torque is required to overcome the adhesion between dirt and the floor, while when cleaning soft or easily worn surfaces, the torque can be reduced to avoid damaging the floor. Operators can adjust the transmission ratio according to actual needs to flexibly respond to various cleaning needs, thereby improving the cleaning efficiency and cleaning effect of the floor scrubber robot. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of an embodiment of a reduction gearbox connection structure of the present invention; Figure 2 for Figure 1 Schematic diagram of the explosion structure; Figure 3 for Figure 2 A partial enlarged view of the middle A; Figure 4 It is a structural schematic diagram of a planet carrier in the reduction gearbox connection structure of the present invention; Figure 5 It is a cross-sectional schematic diagram of the reduction gearbox connection structure of the present invention in one state; Figure 6 It is a cross-sectional schematic diagram of the reduction gearbox connection structure of the present invention in another state.

[0018] Description of Figure Numbers: The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0021] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is that it includes three parallel solutions. Taking "A and / or B as an example", it includes solution A, or solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0023] Reference Figures 1 to 4 The present invention proposes a reduction gearbox connection structure 100, which is applied to a floor cleaning robot, wherein the floor cleaning robot includes a driving motor 220 and a floor brush assembly 230.

[0024] In one embodiment of the present invention, the reduction gearbox connection structure 100 includes a transmission wheel 110, a planetary gear set 130 and a connection assembly 150. The planetary gear set 130 includes a planet carrier 131, an inner gear ring 133, a center wheel 135 and a plurality of planetary wheels 137, the driving motor 220 has an output shaft 221, the center wheel 135 is mounted on the output shaft 221, the plurality of planetary wheels 137 are connected to the planet carrier 131, and meshed with the periphery of the center wheel 135 at intervals, the inner gear ring 133 meshes with the plurality of planetary wheels 137, and the floor brush assembly 230 is transmission-connected to the transmission wheel 110. The connecting assembly 150 includes a first connecting member 151 and a second connecting member 153. The first connecting member 151 is connected to the transmission wheel 110 and is movably connected to the planet carrier 131 to connect or separate the planet carrier 131 from the transmission wheel 110; the second connecting member 153 is connected to the transmission wheel 110 and is movably connected to the center wheel 135 to connect or separate the center wheel 135 from the transmission wheel 110.

[0025] The transmission wheel 110 can be a pulley. The transmission wheel 110 is connected to a belt and transmits power to the floor brush assembly 230 after being decelerated by the pulley group, and the output torque is used to brush the clean floor. In this embodiment, the inner ring gear 133 in the planetary gear group 130 can adopt a fixed structure. When the output shaft 221 of the drive motor 220 drives the center wheel 135 to rotate, the center wheel 135 drives the multiple planetary wheels 137 to both rotate on their own and revolve around the center wheel 135 in the inner ring gear 133. The planetary wheels 137 drive the planet carrier 131 to rotate. Among them, the center wheel 135, the multiple planetary wheels 137 and the inner ring gear 133 can all adopt a helical gear structure to reduce the operating noise during the rotation process. The number of planetary wheels 137 can be 2, 3, 4 or more, and this application does not make specific restrictions on this. The planetary gears 137 are evenly spaced from each other. For example, when three planetary gears 137 are provided, the three planetary gears 137 are spaced 120° apart from each other on the periphery of the center wheel 135. It can be understood that the center wheel 135 and the transmission wheel 110 can be arranged in sequence in the extension direction of the output shaft 221. In this way, the first connecting member 151 and the second connecting member 153 can be designed as long strip structures to control the connection or separation between the planetary carrier 131 and the transmission wheel 110, and between the center wheel 135 and the transmission wheel 110. The structure is relatively simple and easy to adjust and control.

[0026] The reduction gearbox connection structure 100 of the technical solution of the present invention is used in actual use. Figure 5As shown, when the first connecting member 151 moves and connects the transmission wheel 110 and the planet carrier 131, the second connecting member 153 can be moved and separated from the central wheel 135 on the output shaft 221 of the drive motor 220. In this way, when transmission occurs, the output shaft 221 of the drive motor 220 drives the central wheel 135 to rotate, and then transmits it to the transmission wheel 110 through the planetary gear 137, the planet carrier 131, and the first connecting member 151 in sequence. In this way, the speed of the output shaft 221 of the drive motor 220 is reduced by the planetary gear set 130 and transmitted to the transmission wheel 110 for transmission output, thereby achieving a larger reduction ratio. Figure 6 As shown, when the first connecting member 151 moves and separates the transmission wheel 110 and the planetary frame 131, the second connecting member 153 can be moved and connect the transmission wheel 110 and the center wheel 135. In this way, when transmission occurs, the output shaft 221 of the drive motor 220 drives the center wheel 135 to rotate, and the transmission wheel 110 can be driven directly through the second connecting member 153 to transmit, without passing through the planetary gear set 130 to achieve a smaller reduction ratio. Therefore, by changing the transmission ratio through the connecting assembly 150, the output torque can be effectively adjusted, which means that the working mode of the floor scrubber robot can be simply switched according to the cleaning needs of different floors. For example, when cleaning hard floors, a larger torque is required to overcome the adhesion between dirt and the floor, while when cleaning softer or easily worn surfaces, the torque can be reduced to avoid damage to the floor. The operator can adjust the transmission ratio according to actual needs to flexibly respond to various cleaning needs, thereby improving the cleaning efficiency and cleaning effect of the floor scrubber robot.

[0027] Combined with reference Figure 2 and Figure 3 In one embodiment of the present invention, the first connecting member 151 includes a first connecting rod 1511, a through first connecting hole 111 is opened in the axial direction of the transmission wheel 110, and a second connecting hole 1312 is opened at a position of the planetary carrier 131 corresponding to the first connecting hole 111. One end of the first connecting rod 1511 passes through the first connecting hole 111 and can be movably inserted into the second connecting hole 1312 to connect or separate the planetary carrier 131 and the transmission wheel 110.

[0028] In this embodiment, the first connecting rod 1511 passes through the first connecting hole 111 and passes through the transmission wheel 110, while the end away from the transmission wheel 110 is movably connected in the second connecting hole 1312 in the planetary carrier 131. The first connecting hole 111 can be a circular hole that matches the shape of the first connecting rod 1511. When the first connecting rod 1511 moves relative to the planetary carrier 131, it can also move in the first connecting hole 111. In this way, the planetary carrier 131 and the transmission wheel 110 are connected by the first connecting rod 1511, so that after a large deceleration through the planetary gear set 130, a large torque is transmitted and output by the transmission wheel 110 to clean the ground with strong garbage adhesion, thereby improving the cleaning effect.

[0029] Continue to refer to Figure 2 and Figure 3 In one embodiment of the present invention, the second connecting member 153 includes a second connecting rod 1531, and a third connecting hole 113 is also opened in the axial direction of the transmission wheel 110. The third connecting hole 113 is spaced apart from the first connecting hole 111. The center wheel 135 has a mounting hole 135a, and the output shaft 221 is inserted into one end of the mounting hole 135a. One end of the second connecting rod 1531 passes through the third connecting hole 113 and is movably connected to the end of the mounting hole 135a away from the output shaft 221, so that the center wheel 135 is connected or separated from the transmission wheel 110.

[0030] The second connecting rod 1531 can be a round rod structure with the same shape as the first connecting rod 1511. The second connecting rod 1531 is connected to the mounting hole 135a where the output shaft 221 is mounted, and can maintain a high degree of coaxiality with the output shaft 221 when rotating. The center wheel 135 and the transmission wheel 110 are connected by the second connecting rod 1531, and the first connecting rod 1511 is controlled to separate from the planetary carrier 131, so that the power of the output shaft 221 of the driving motor 220 is directly transmitted to the transmission wheel 110 through the center wheel 135 and the second connecting rod 1531 for deceleration output. The output deceleration is relatively small, and the output torque is also small, so that some soft floors can be quickly cleaned and the cleaning efficiency is improved.

[0031] Combined with reference Figure 4 In one embodiment of the present invention, the planet carrier 131 includes a fixed disk 131a and a mounting column 131b connected to the fixed disk 131a, the mounting column 131b is located in the middle position of the fixed disk 131a, a plurality of planetary gears 137 are connected to the fixed disk 131a, the mounting column 131b is provided with a second connecting hole 1312, and the mounting column 131b is also provided with a through fourth connecting hole 1314, the extension direction of the fourth connecting hole 1314 is the same as the extension direction of the second connecting hole 1312, and the second connecting rod 1531 passes through the third connecting hole 113 and the fourth connecting hole 1314 in sequence and is movably connected to the mounting hole 135a.

[0032] In this embodiment, the fixed disk 131a can be a disk structure, the mounting column 131b can be a cylindrical structure, the central axis of the mounting column 131b coincides with the central axis of the fixed disk 131a, and the fixed disk 131a and the mounting column 131b can be an integral structure. By opening a fourth connecting hole 1314 through the mounting column 131b of the planetary frame 131, the second connecting rod 1531 can directly pass through the planetary frame 131 for transmission, so that the coaxiality of the output shaft 221 to the transmission wheel 110 is better. Moreover, the connection and separation of the second connecting rod 1531 and the mounting hole 135a are adjusted through the third connecting hole 113 and the fourth connecting hole 1314, and the operation is simpler.

[0033] Continue to refer to Figure 4 Furthermore, in one embodiment of the present invention, a side of the mounting column 131b close to the center wheel 135 is also provided with an avoidance hole 1316, the avoidance hole 1316 is connected to the fourth connecting hole 1314, and the second connecting rod 1531 is movable to connect with the center wheel 135 or to separate from the center wheel 135 and be received in the avoidance hole 1316. It can be understood that the aperture of the avoidance hole 1316 is larger than the aperture of the fourth connecting hole 1314, and the avoidance hole 1316 and the fourth connecting hole 1314 form a stepped hole shape and penetrate the length direction of the mounting column 131b. By setting the avoidance hole 1316 on the side close to the center wheel 135, when the second connecting rod 1531 moves relative to the center wheel 135 and disengages from the mounting hole 135a, the part where the second connecting rod 1531 is connected to the center wheel 135 can retreat into the avoidance hole 1316 to avoid the rotation of the center wheel 135 and prevent interference with the center wheel 135, thereby ensuring that the center wheel 135 can transmit power through the planetary gear 137, the planetary carrier 131 and the first connecting rod 1511.

[0034] In one embodiment of the present invention, the outer wall of one end of the first connecting rod 1511 is provided with a first external thread, and the hole wall of the second connecting hole 1312 is provided with a first internal thread, and the first external thread matches the first internal thread. The threaded connection and matching structure not only makes the structure of the first connecting rod 1511 to move simpler, but also facilitates the adjustment operation, and can be quickly switched when the transmission ratio needs to be adjusted.

[0035] Reference Figure 2Further, the outer wall of the second connecting rod 1531 is provided with a second external thread, and the hole walls of the third connecting hole 113, the fourth connecting hole 1314 and the mounting hole 135a are all provided with a second internal thread, and the second external thread matches the second internal thread. In this embodiment, the second connecting rod 1531 can also be connected or separated with the center wheel 135 by adopting a threaded connection and matching structure. Since the fourth connecting hole 1314 in the planet carrier 131 is also provided with a second internal thread, when the center wheel 135 drives the transmission wheel 110 to rotate through the second connecting rod 1531, the second connecting rod 1531 can also drive the planet carrier 131 to rotate synchronously, that is, the second connecting rod 1531 drives the planet carrier 131 and the transmission wheel 110 to rotate synchronously, but at this time, since the first connecting rod 1511 is separated from the planet carrier 131, the planet carrier 131 cannot transmit to the transmission wheel 110. In this way, the planet carrier 131 and the transmission wheel 110 can be kept synchronized, and the first connecting hole 111 always corresponds to the second connecting hole 1312. When the planet carrier 131 and the transmission wheel 110 need to be connected, the first connecting rod 1511 can be quickly and accurately inserted into the second connecting hole 1312.

[0036] Of course, in another embodiment of the present invention, the first connecting rod 1511 and the second connecting rod 1531 may also be made of a magnetic structure, and electromagnets are respectively arranged in the holes of the first connecting rod 1511 and the second connecting rod 1531. When the electromagnets are energized, they magnetically fix the first connecting rod 1511 and the second connecting rod 1531, and when the power is off, they demagnetize, so that the first connecting rod 1511 and the second connecting rod 1531 can be movably separated.

[0037] Reference Figure 3 Further, in one embodiment of the present invention, the first connection member 151 further includes a first stop ring 1513, which is mounted on the rod wall of the first connection rod 1511, and the first connection rod 1511 is movable, and the first stop ring 1513 can be abutted against the side of the transmission wheel 110 away from the planet carrier 131; the second connection member 153 further includes a second stop ring 1533, which is mounted on the rod wall of the second connection rod 1531, and there is a gap between the second stop ring 1533 and the first stop ring 1513, and the second connection rod 1531 is movable, and the second stop ring 1533 can be abutted against the side of the transmission wheel 110 away from the planet carrier 131. The first stop ring 1513 and the second stop ring 1533 can be annular structures, and are detachably connected and fixed to the first connection rod 1511 and the second connection rod 1531, respectively. The first limiting ring 1513 and the second limiting ring 1533 can be made of a flexible material, so that when they abut against the transmission wheel 110, friction noise is not easily generated during the rotation process. By providing the first limiting ring 1513 and the second limiting ring 1533, the movable travel of the first connecting rod 1511 and the second connecting rod 1531 can be stopped and limited to prevent separation.

[0038] Please refer to Figure 1 and Figure 2 In one embodiment of the present invention, an operating portion 1515 is provided at one end of the first connecting rod 1511 away from the second connecting hole 1312, the floor scrubber robot has a housing 210, the reduction box connection structure 100 is arranged in the housing 210, the first connecting rod 1511 is movable, and the first limiting ring 1513 can be abutted against the inner wall of the housing 210, and the housing 210 is also provided with an operating port 211 at a position corresponding to the first connecting rod 1511, and the operating portion 1515 is exposed through the operating port 211. When the first connecting rod 1511 is threadedly matched with the second connecting hole 1312, it can be adjusted by screwing the operating portion 1515, so that the movable adjustment can be conveniently performed by setting the operating portion 1515. At the same time, since the operating portion 1515 is exposed through the operating port 211, when the first connecting rod 1511 needs to be adjusted to change the transmission ratio, it can be adjusted through the operating port 211. The operating port 211 can be set as a waist-shaped port or an arc port, so that it is convenient to adjust through the operating port 211. Considering that there are many water stains when cleaning the floor, in this embodiment, the operation port 211 is further covered with a sealing cover 212, which can effectively prevent water stains from entering the interior of the housing 210 during the cleaning process.

[0039] In the embodiment of the present invention, the central axis of the second connecting member 153 coincides with the central axis of the transmission wheel 110 , and a plurality of first connecting members 151 are provided, and the plurality of first connecting members 151 are arranged around the periphery of the central axis of the second connecting member 153 .

[0040] Specifically, the second connecting members 153 may be arranged in 2, 3, 4 or more numbers on the first connecting member 151. For example, when the number of the first connecting members 151 is 2, the two first connecting members 151 are arranged around the outer side of the second connecting member 153 at an interval of 180°; when the number of the first connecting members 151 is 3, the three first connecting members 151 are arranged around the outer side of the second connecting member 153 at an interval of 120°, and so on. Such an arrangement enables good coaxiality to be maintained whether the output torque is driven by the first connecting member 151 or the second connecting member 153.

[0041] The present invention also proposes a floor scrubber robot, which includes a drive motor 220, a brush assembly, and a reduction box connection structure 100. The floor scrubber robot can be a handheld floor scrubber, and the drive motor 220 can also be a variable frequency motor. The drive motor 220 is transmission-connected to the reduction box connection structure 100, and the reduction box connection structure 100 is transmission-connected to the floor brush assembly 230. The specific structure of the reduction box connection structure 100 refers to the above embodiment. Since the reduction box connection structure 100 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0042] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A reduction box connection structure, applied to a floor cleaning robot, characterized in that: The floor scrubbing robot comprises a driving motor and a floor brush assembly; The reduction box connection structure comprises: A transmission wheel, the transmission wheel is transmission-connected to the floor brush assembly; A planetary gear set, the planetary gear set comprising a planet carrier, an inner gear ring, a center wheel and a plurality of planetary wheels, the drive motor having an output shaft, the center wheel being mounted on the output shaft, the plurality of planetary wheels being connected to the planet carrier and meshing with the periphery of the center wheel at intervals, the inner gear ring being meshed with the plurality of planetary wheels; and A connecting component, the connecting component includes a first connecting member and a second connecting member, the first connecting member is connected to the transmission wheel and is movably connected to the planet carrier to connect or separate the planet carrier from the transmission wheel; the second connecting member is connected to the transmission wheel and is movably connected to the center wheel to connect or separate the center wheel from the transmission wheel.

2. The reduction gearbox connection structure according to claim 1, characterized in that: The first connecting member includes a first connecting rod, a first connecting hole is formed in the axial direction of the transmission wheel, a second connecting hole is formed in the planetary carrier at a position corresponding to the first connecting hole, one end of the first connecting rod passes through the first connecting hole and can be movably inserted into the second connecting hole to connect or separate the planetary carrier from the transmission wheel.

3. The reduction gearbox connection structure according to claim 2, characterized in that: The second connecting member includes a second connecting rod, and a third connecting hole is also provided in the axial direction of the transmission wheel. The third connecting hole is spaced apart from the first connecting hole. The center wheel has a mounting hole, and the output shaft is inserted into one end of the mounting hole. One end of the second connecting rod passes through the third connecting hole and is movably connected to one end of the mounting hole away from the output shaft, so that the center wheel is connected to or separated from the transmission wheel.

4. The reduction gearbox connection structure according to claim 3, characterized in that: The planetary carrier includes a fixed plate and a mounting column connected to the fixed plate, the mounting column is located in the middle position of the fixed plate, a plurality of planetary gears are connected to the fixed plate, the mounting column is provided with the second connecting hole, the mounting column is also provided with a through fourth connecting hole, the extension direction of the fourth connecting hole is the same as the extension direction of the second connecting hole, the second connecting rod passes through the third connecting hole and the fourth connecting hole in sequence and is movably connected to the mounting hole.

5. The reduction gearbox connection structure according to claim 4, characterized in that: A side of the mounting column close to the center wheel is also provided with an avoidance hole, the avoidance hole is connected to the fourth connecting hole, and the second connecting rod is movable to be connected to the center wheel or separated from the center wheel and received in the avoidance hole.

6. The reduction gearbox connection structure according to claim 4, characterized in that: The outer wall of one end of the first connecting rod is provided with a first external thread, the hole wall of the second connecting hole is provided with a first internal thread, and the first external thread matches the first internal thread; The outer wall of the second connecting rod is provided with a second external thread, and the hole walls of the third connecting hole, the fourth connecting hole and the mounting hole are all provided with a second internal thread, and the second external thread matches the second internal thread.

7. The reduction gearbox connection structure according to claim 3, characterized in that: The first connecting member further comprises a first limiting ring, which is mounted on a rod wall of the first connecting rod. The first connecting rod is movable, and the first limiting ring can abut against a side of the transmission wheel away from the planet carrier. The second connecting member also includes a second limiting ring, which is installed on the rod wall of the second connecting rod. There is a gap between the second limiting ring and the first limiting ring. The second connecting rod is movable and can make the second limiting ring abut against the side of the transmission wheel away from the planetary carrier.

8. The reduction gearbox connection structure according to claim 7, characterized in that: An operating part is provided at one end of the first connecting rod away from the second connecting hole, the floor cleaning robot has a shell, the reduction box connecting structure is arranged in the shell, the first connecting rod is movable, and the first limiting ring can abut against the inner wall of the shell, and the shell is also provided with an operating port corresponding to the position of the first connecting rod, and the operating part is exposed through the operating port.

9. The reduction gearbox connection structure according to any one of claims 1 to 8, characterized in that: The central axis of the second connecting member coincides with the central axis of the transmission wheel. A plurality of first connecting members are provided, and the plurality of first connecting members are arranged around the periphery of the central axis of the second connecting member.

10. A floor-cleaning robot, characterized in that: It comprises a reduction gearbox connection structure as claimed in any one of claims 1 to 9.

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