CN214549294U

CN214549294U - Motor element and robot of sweeping floor

Info

Publication number: CN214549294U
Application number: CN202120011327.4U
Authority: CN
Inventors: 黄艺华; 胡卫; 江国朝; 张刘研
Original assignee: Shenzhen Casic Motor System Co ltd
Current assignee: Shenzhen Casic Motor System Co ltd
Priority date: 2021-01-04
Filing date: 2021-01-04
Publication date: 2021-11-02
Anticipated expiration: 2031-01-04

Abstract

The utility model discloses a motor element and robot of sweeping floor. The motor assembly is used for a sweeping robot, the sweeping robot comprises a roller, and the motor assembly comprises a motor; the reduction gearbox is arranged at one end of the motor and comprises a reduction mechanism, a limiting shaft and an output shaft, the reduction mechanism is in transmission connection with the rotating shaft and the output shaft respectively, the output shaft is used for driving the roller, and the limiting shaft is connected with the reduction mechanism so as to limit the radial movement of the reduction mechanism; the first end cover is arranged at one end of the motor, which is far away from the reduction gearbox; the fixing piece is rotatably connected with the first end cover, and one end, far away from the first end cover, of the fixing piece is fixedly connected with the roller. The utility model discloses technical scheme aims at improving motor element's stability, reduces the external impact force and damages motor element, improves motor element and sweeps floor the life of robot.

Description

Motor element and robot of sweeping floor

Technical Field

The utility model relates to a robot technical field, in particular to motor element and applied this motor element's robot of sweeping floor.

Background

The floor sweeping robot can replace a person to quickly clean the ground, can effectively relieve the cleaning pressure of people and is favored. The sweeping robot in the related art uses a drum motor as a driving part of the sweeping robot. The driving part comprises a motor, a reduction gearbox and the like, the motor, the reduction gearbox and the like are matched with the roller to drive the roller to roll relative to the sweeping robot, and the brush outside the driving roller is driven to clean.

Because the motor and the reduction gearbox are matched with the roller, the cleaning effect of the sweeping robot and the service life of the sweeping robot can be directly influenced if the structure of the reduction gearbox is stable. Meanwhile, when the roller of the sweeping robot is cleaned, external impact force can be applied to the driving part, so that the motor part is damaged, and the service lives of the driving part and the sweeping robot are further influenced.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing a motor element aims at improving motor element's stability, reduces external impact force and damages motor element, improves motor element and sweeps the floor the life of robot.

In order to achieve the above object, the utility model provides a motor element for the robot of sweeping the floor, the robot of sweeping the floor includes the cylinder, motor element includes:

the motor is provided with a rotating shaft;

the reduction gearbox is arranged at one end of the motor and comprises a reduction mechanism, a limiting shaft and an output shaft, the reduction mechanism is in transmission connection with the rotating shaft and the output shaft respectively, the output shaft is used for driving the roller, and the limiting shaft is connected with the reduction mechanism so as to limit the radial movement of the reduction mechanism;

the first end cover is arranged at one end of the motor, which is far away from the reduction gearbox; and

the fixing piece is rotatably connected with the first end cover, and one end, far away from the first end cover, of the fixing piece is fixedly connected with the roller.

The utility model discloses an in the embodiment, the reducing gear box still includes the box, the internal face of box is equipped with spacing step, reduction gears with spacing axle is all located in the box, the reducing gear box still includes:

and the axial limiting mechanism is sleeved on the side wall of the output shaft and is abutted against the speed reducing mechanism and the limiting step to limit the axial movement of the output shaft.

In an embodiment of the present invention, the motor assembly further includes:

the motor and the reduction gearbox are both arranged in the shell, the box body is abutted against the inner wall surface of the shell, and the first end cover is detachably connected to one end of the shell and seals the opening at one end of the shell; and

the second end cover is fixedly connected with one end, far away from the motor, of the box body, and is also fixedly connected with the shell so as to seal the opening, far away from the first end cover, of the shell.

The utility model discloses an in one embodiment, the mounting orientation the terminal surface of first end cover is equipped with the spread groove, the cell wall of spread groove still is equipped with the shaft hole, first end cover is kept away from the one end of motor is inserted and is located in the spread groove, first end cover still connects and is equipped with the articulated shaft, the rotatable inserting of both ends of articulated shaft is located in the shaft hole.

In an embodiment of the present invention, a fixing hole is further formed on an end surface of the fixing member away from the first end cap, and the fixing member is fixedly connected to the drum through a fastening member engaged with the fixing hole;

and/or, the periphery wall of mounting still the concave groove of accomodating that is equipped with, accomodate the groove with the mounting deviates from the terminal surface intercommunication of first end cover, accomodate the groove certainly the mounting deviates from the terminal surface orientation of first end cover direction extension sets up.

In an embodiment of the present invention, the speed reducing mechanism includes:

the transmission planetary gear sets are distributed along the axial direction of the output shaft, each transmission planetary gear set comprises a first planetary frame, the first planetary frame is provided with a limiting hole, a limiting shaft is inserted into the limiting hole, and the rotating shaft is in transmission connection with the transmission planetary gear set far away from the output shaft; and

the output planetary wheel set is in transmission connection with the transmission planetary wheel set close to one end of the output shaft, the output shaft is in transmission connection with the output planetary wheel set, and the axial limiting mechanism is far away from the end face of the limiting step and is abutted to the output planetary wheel set.

In an embodiment of the present invention, the output planetary gear set includes a second planetary carrier, the second planetary carrier is in transmission connection with the output shaft, and the axial limiting mechanism is respectively abutted against the second planetary carrier and the box body; and

and the second planet wheels are in transmission connection with the second planet carrier and are uniformly distributed along the radial direction of the second planet carrier, and the second planet wheels are in transmission connection with the movable planet wheel set close to the output shaft.

In an embodiment of the present invention, the axial limiting component includes:

the first bearing is sleeved on the side wall of the output shaft, a first flange ring is convexly arranged on the side wall of the first bearing, the surface of the first flange ring is abutted against the second planet carrier, and the surface of the first flange ring, which is deviated from the second planet carrier, is abutted against one end face of the limiting step;

the second bearing is sleeved on the side wall of the output shaft and is arranged at an interval with the first bearing, a second flange ring is convexly arranged on the side wall of the second bearing, and the surface of the second flange ring is abutted against the end face, far away from the first bearing, of the limiting step; and

the clamping ring is sleeved on the side wall of the output shaft and is abutted to the surface, far away from the limiting step, of the second flange ring.

The utility model discloses an in an embodiment, the lateral wall face of output shaft still is equipped with the draw-in groove, the rand is fixed in the draw-in groove, at least part of rand still protrudes the lateral wall face setting of output shaft, with second flange circle butt.

The utility model also provides a robot of sweeping the floor, the robot of sweeping the floor include the cylinder with motor element.

The utility model discloses technical scheme's motor element, through be provided with motor and reducing gear box in the casing, motor shaft is with the rotation of the low moment of torsion of high rotational speed through the reducing gear box speed reduction for the motion of the high moment of torsion of the low rotational speed of output shaft output is rotated in order to drive the cylinder and is realized clean operation. Through being connected with the mounting at first end cover, the mounting rotates with first end cover to be connected, and the external force that brings when can effectively cushion the cylinder cleanness strikes, realizes the guard action to the motor. And, still be equipped with spacing axle in the reducing gear box, spacing axle is connected with reduction gears to avoid reduction gears great removal to appear in the radial direction at the during operation, thereby promote the stability of reduction gears operation, and then promote the operating stability of reducing gear box, with the part wearing and tearing that reduce in the reducing gear box, and then promote the life of reducing gear box. The utility model discloses motor element among the technical scheme is connected with the mounting and sets up limit structure on the reducing gear box through rotating at first end cover to promote the stability of motor element operation, thereby promoted motor element and used this motor element's the life of robot of sweeping the floor.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of a motor assembly according to the present invention;

fig. 2 is a schematic structural view of the motor assembly in fig. 1 after the housing is hidden;

FIG. 3 is a schematic structural view of the motor assembly of FIG. 1;

FIG. 4 is a front view of the motor assembly of FIG. 1;

FIG. 5 is a cross-sectional view of the motor assembly A-A of FIG. 4;

FIG. 6 is an enlarged view of portion A of FIG. 5;

FIG. 7 is an enlarged view of portion B of FIG. 5;

FIG. 8 is an exploded view of the motor and reduction gearbox of FIG. 2;

fig. 9 is a perspective view of a connection cover in the motor assembly of the present invention;

FIG. 10 is a perspective view of the attachment cap of FIG. 9 from another perspective;

fig. 11 is a perspective view of a fixing member in the motor assembly of the present invention;

FIG. 12 is a perspective view of the anchor member of FIG. 11 from another perspective;

fig. 13 is a schematic structural view of a sealing cover in the motor assembly of the present invention. The reference numbers illustrate:

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indications in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a motor element 1000.

Referring to fig. 1 to 5, in an embodiment of the present invention, a motor assembly 1000 is used for a sweeping robot (not shown), the sweeping robot includes a roller (not shown), the motor assembly 1000 includes

The motor 200, the said motor 200 has spindles 210;

the reduction box 300 is arranged at one end of the motor 200, the reduction box 300 comprises a reduction mechanism 320, a limiting shaft 323 and an output shaft 325, the reduction mechanism 320 is respectively in transmission connection with the rotating shaft 210 and the output shaft 325, the output shaft 325 is used for driving the roller, and the limiting shaft 323 is connected with the reduction mechanism 320 to limit the radial movement of the reduction mechanism 320;

the first end cover 400 is arranged at one end of the motor 200 far away from the reduction box 300, and the first end cover 400 is arranged at the other end of the motor 200 far away from the reduction box 300; and

and the fixing piece 700 is rotatably connected with the first end cover 400, and one end of the fixing piece 700, which is far away from the first end cover, is fixedly connected with the roller.

The utility model discloses technical scheme's motor element 1000, through be provided with motor 200 and reducing gear box 300 in casing 100, motor 200 pivot 210 decelerates through reducing gear box 300 with the rotation of the low moment of torsion of high rotational speed for the motion of the high moment of torsion of the low rotational speed of output shaft 325 output is rotated in order to drive the cylinder and is realized cleaning operation. Through being connected with mounting 700 at first end cover 400, mounting 700 rotates with first end cover 400 to be connected, and the external force impact that brings when can effectively cushion the cylinder and clean realizes the guard action to motor 200. In addition, a limiting shaft 323 is further arranged in the reduction gearbox 300, and the limiting shaft 323 is connected with the reduction mechanism 320 so as to prevent the reduction mechanism 320 from moving greatly in the radial direction during operation, thereby improving the operation stability of the reduction mechanism 320, further improving the operation stability of the reduction gearbox 300, reducing the abrasion of parts in the reduction gearbox 300, and further prolonging the service life of the reduction gearbox 300. The utility model discloses motor element 1000 among the technical scheme is connected with mounting 700 and sets up limit structure on reducing gear box 300 through rotating at first end cover 400 to promote the stability of motor element 1000 operation, thereby promoted motor element 1000 and used this motor element 1000's the life of robot of sweeping the floor.

In an embodiment of the present invention, the material of the casing 100 is a metal material, for example, a stainless steel material, an aluminum alloy material, a copper alloy material, an iron alloy material, etc., so as to improve the strength of the casing 100 and prolong the service life of the casing 100. Moreover, the metal shell 100 has good heat-conducting performance, heat generated by the motor 200 can be quickly dissipated, the working temperature of the motor 200 is reduced, the motor 200 is prevented from being burnt out, and the service life of the motor assembly 1000 and the floor-sweeping robot is ensured.

Referring to fig. 5 to 8, the reduction gearbox 300 and the motor 200 may be detachably and fixedly connected by screws, so that not only the stability of connection between the motor 200 and the reduction gearbox 300 is ensured, but also the separation between the reduction gearbox 300 and the motor 200 is facilitated, thereby facilitating maintenance. The internal perisporium of box 310 of reducing gear box 300 is the metal ring gear, and the periphery wall of box 310 is the wall column structure of polymer material, and internal perisporium and periphery wall body coupling can ensure the structural strength of box 310, can promote the corrosion resisting property of box 310 again.

An opening (not shown) is provided at an end of the housing 310 away from the motor 200 for the output shaft 325 to pass through. The second end cap 500 is coupled to an end of the case 310 where an opening is formed and can seal the opening. Specifically, the second end cap 500 is provided with a through hole (not labeled) for the output shaft 325 to pass through, which is disposed corresponding to an opening on the case 310. The second end cap 500 is further connected with an oil seal 520, the oil seal 520 is sleeved on the side wall surface of the output shaft 325 and is connected with the second end cap 500, so that the through hole of the second end cap 500 is sealed. One end of the output shaft 325 passing through the oil seal 520 is drivingly connected to the drum through the oldham coupling 900. Because the oil seal 520 is arranged, water can be effectively prevented from entering the box body 310 of the reduction gearbox 300 along the side wall of the output shaft 325, and the waterproofness of the box body 310 is improved. In some embodiments, the output shaft 325 is made of stainless steel with a waterproof structure, which can improve the corrosion resistance of the output shaft.

In the reduction gear box 300, the reduction mechanism 320 is a multi-stage gear reduction mechanism 320. Specifically, the planetary gear set comprises at least two transmission planetary gear sets 321 and an output planetary gear set 323. At least two transmission planetary gear sets 321 and output planetary gear sets 323 are arranged along the extending direction of the output shaft 325.

The transmission planetary gear set 321 is provided with a first planet carrier 3211 and a plurality of first planet gears 3215, the first planet carrier 3211 is provided with a limiting hole 3213, the limiting shaft 323 is inserted into the limiting hole 3213 and is fixedly connected with the limiting hole 3213, the plurality of first planet gears 3215 are in transmission connection with the first planet carrier 3211, the plurality of first planet gears 3215 are uniformly arranged along the radial direction of the first planet carrier 3211, and the first planet carrier 3211 is engaged with the first planet gears 3215 in the adjacent transmission planetary gear set 321.

So, this spacing axle 323 can carry out radial spacing to every group transmission planetary gear set 321, avoids a plurality of transmission planetary gear sets 321 to produce radial direction's skew because of radial atress at the in-process of operation for a plurality of transmission planetary gear sets 321 keep the axiality at the in-process of operation, with the stability that improves the reducing gear box 300 operation, reduce the wearing and tearing of each part in the reducing gear box 300, improve the life of reducing gear box 300. Meanwhile, the stable operation of the reduction gearbox 300 can also effectively reduce the noise of operation.

Further, a radial limiting structure can be formed between the limiting shaft 323 and the limiting hole 3213 in a matching manner, so that the limiting shaft 323 and the first planet carrier 3211 are prevented from rotating with each other, and the connection reliability of the limiting shaft 323 and the first planet carrier 3211 is improved. The limiting structure may be a fitting of the D-limiting hole 3213 and a D-shaped shaft, which is not limited herein.

Further, the structure of the output planetary gear set 323 is substantially the same as that of the transmission planetary gear set 321. The output planetary gear set 323 includes a second planet carrier 3231 and a plurality of second planet gears. The second planet carrier 3231 is also provided with a shaft hole 3233, and the output shaft 325 is inserted into the shaft hole 3233 and is fixedly connected with the second planet carrier 3231; the plurality of second planet gears 3235 are in transmission connection with the second planet carrier 3231 and are uniformly arranged along the radial direction of the second planet carrier 3231, and the second planet gears are engaged with the first planet carrier 3211 close to the output shaft 325. Wherein the output shaft 325 may be a D-shaped shaft to improve the reliability of the connection. Further, the output shaft 325 is connected to the drum through the oldham coupling 900. The drum is provided with a groove structure matching the oldham coupling 900.

Referring to fig. 5, 7 and 8, the axial limiting mechanism 327 includes a limiting step 311 provided in the case 310, a first bearing 3271, a second bearing 3273 and a collar 329. The first bearing 3271 and the second bearing 3273 are both sleeved on a side wall of the output shaft 325, and the second bearing 3273 is spaced from the first bearing 3271. A first flange ring 3271a is convexly arranged on the side wall of the first bearing 3271, the surface of the first flange ring 3271a abuts against the surface of the second planet carrier 3231, and the surface of the first flange ring 3271a departing from the second planet carrier 3231 also abuts against one end face of the limiting step 311. A second flange ring 3273a is also provided on the side wall of the second bearing 3273 in a protruding manner, and the surface of the second flange ring 3273a abuts against the end surface of the limit step 311 away from the first bearing 3271. The side wall of output shaft 325 is located with the cover to rand 329, and outside holding the chamber, rand 329 and second flange circle 3273a deviate from the surface butt of first bearing 3271 to realize carrying out axial spacing to output shaft 325, steel output shaft 325 takes place axial motion relative to box 310, makes this reducing gear box 300 can keep steady when the operation, reduces the wearing and tearing of output shaft 325 and box 310, in order to improve the life of output shaft 325. Meanwhile, the stable operation of the reduction gearbox 300 can also effectively reduce the noise of operation.

Referring to fig. 5 and 7, further, a clamping groove 3251 is concavely arranged on a side wall of the output shaft 325, a clamping ring 329 is inserted and fixed in the clamping groove 3251, and at least a part of the clamping ring 329 is arranged to protrude out of the side wall of the output shaft 325. The clamping groove 3251 is arranged to axially limit the clamping ring 329, so that the clamping ring 329 is prevented from rotating relative to the output shaft 325, and the limiting accuracy of the clamping ring 329 is improved. The clamping ring 329 is in an annular clamping structure, an inner ring of the clamping ring 329 is abutted against the bottom wall of the clamping groove 3251, and an outer ring of the clamping ring 329 is arranged to be larger than the outer diameter of the output shaft 325. Further, a gasket (not shown) can be arranged between the second bearing 3273 and the clamping ring 329 and is made of rubber, the gasket is clamped between the second flange ring 3273a and the clamping ring 329, noise caused by mutual collision of the second flange ring 3273a and the clamping ring 329 can be avoided, and the using effect of the reduction gearbox 300 is further improved.

Referring to fig. 3, 5 and 6, in an embodiment of the present invention, the first end cap 400 may be detachably connected to the housing 100 by screws. Specifically, the first end cap 400 includes:

the connecting cover 410, the connecting cover 410 has a first end portion 411 and a second end portion 413 which are oppositely arranged, the first end portion 411 is inserted and fixed inside the casing 100, the second end portion 413 is used for being connected with the drum, the inner ring 610 of the axial support 600 is sleeved on the outer wall of the connecting cover 410 and is located between the first end portion 411 and the second end portion 413, and the side wall surface of the first end portion 411 is provided with the first fixing groove 4111; and a sealing cover 430, wherein the sealing cover 430 is disposed between the first end and the motor 200, and the sealing cover 430 is abutted against an inner wall surface of the housing 100 to hermetically isolate the connecting cover 410 and the motor 200.

In an embodiment of the present invention, the motor 200 is substantially a cylindrical structure, and the side wall of the motor 200 is generally thin, and the stator structure needs to be fixed inside the motor 200. Therefore, the motor 200 is preferably fixed by both ends. The first end cap 400 is difficult to screw with one end of the motor 200 as a cylindrical structure. Therefore, the reduction gearbox 300 is connected with one end of the motor 200 by fixing the connecting cover 410 with the housing and abutting the sealing cover 430 with the end of the motor 200; both ends of the motor 200 are fixed by the reduction case 300 and the first end cover 400, respectively, wherein the sealing cover 430 is fixed with the motor 200 by friction.

The corresponding positions of the side wall surface of the connecting cover 410 and the side wall surface of the housing 100 are provided with threaded holes, and the fixing cover and the housing 100 are detachably connected through the connection of screws and the threaded holes. Specifically, the connection cap 410 is substantially cylindrical, and an outer diameter of the first end portion 411 of the connection cap 410 is slightly smaller than an inner diameter of the housing 100, so that the first end portion 411 can protrude into the interior of the housing 100, thereby improving the reliability of sealing the first end portion 411 with the housing 100.

In an embodiment of the present invention, a hinge shaft 470 is connected to the second end 413 to facilitate the hinge connection between the connection cover 410 and the fixing member 700. Specifically, the hinge shaft 470 may be integrally formed with the second end 413, and the hinge shaft 470 is convexly disposed on a side wall surface of the second end 413. The hinge shaft 470 may also be separated from the second end 413, a mounting hole 4131 is formed in a side wall surface of the second end 413, the hinge shaft 470 is inserted into the mounting hole 4131, and a connecting section of the hinge shaft 470 protrudes out of the side wall surface of the second end 413, so as to be conveniently hinged to the fixing member 700. In order to ensure the buffering effect, the material of the hinge shaft 470 is not selected from conventional hard metal, but is rubber. The rubber material has considerable strength and certain softness (such as nitrile rubber material with high vulcanization degree). In other embodiments, the material of the hinge shaft 470 may be selected from a plastic material with certain softness.

The material of the connection cap 410 is hard material to ensure the strength of the connection cap 410 structure. The connection cap 410 may be injection molded using a conventional plastic. The material of the connection cap 410 may be ABS (Acrylonitrile Butadiene Styrene plastic, terpolymer of Acrylonitrile, Butadiene, and Styrene), POM (Polyoxymethylene), PS (Polystyrene), PMMA (polymethyl methacrylate), PC (Polycarbonate), PET (polyethylene glycol terephthalate), etc., so that the cost of the connection cap 410 may be reduced. Meanwhile, the plastic connecting cover 410 can also ensure that the surface of the connecting cover 410 has good antirust, sealing and weather-proof properties, can prevent the connecting cover 410 from being corroded and damaged in various complex environments, and prolongs the service life of the connecting cover 410.

Referring to fig. 9 and 10, further, in an embodiment of the present invention, an end surface of the first end portion 411 is concavely provided with a mounting groove 4113, and a hole wall of the mounting groove 4113 forms a step; the sealing cover 430 includes a plug portion 431, a pressing portion 433, and a sealing portion 435 connected in sequence, the plug portion 431 and the pressing portion 433 are inserted into the mounting groove 4113, the pressing portion 433 is also in interference fit with the step, and the sealing portion 435 is abutted to the end surface of the first end portion 411, the motor 200, and the inner surface of the housing 100.

In an embodiment of the present invention, the mounting groove 4113 has a bottom wall (the mounting groove 4113 is formed as a cylinder structure with an opening at one end) to ensure the sealing function of the connection cover 410. The sealing cover 430 is of a bowl-shaped structure, an opening of the sealing cover 430 is arranged towards one side of the motor 200, a part of the sealing cover 430 is inserted into the mounting groove 4113, the sealing part 435 can be abutted against the motor 200, meanwhile, the edge of the sealing part 435 can also be abutted against the inner wall surface of the housing 100, and the surface of the sealing part 435 facing away from the motor 200 is abutted against the end surface of the first end part 411, so that the motor 200 is completely separated from the connecting cover 410, and the sealing reliability of the motor 200 is ensured.

Due to the provision of the mounting groove 4113, the reliability of the connection between the connection cover 410 and the sealing cover 430 can be further improved. The inserting part 431 and the pressing part 433 of the sealing cover 430 can be inserted into and fixed in the mounting groove 4113, and the pressing part 433 is in interference fit with the hole wall of the mounting groove 4113, so that the reliability of connection between the sealing cover 430 and the connecting cover 410 can be improved, and the sealing effect of the sealing cover 430 can be further improved. The step formed on the hole wall of the mounting groove 4113 may be a step, and the step can further improve the reliability and sealing effect of the connection between the sealing cover 430 and the connection cover 410, and prevent the separation of the sealing cover 430 and the connection cover 410.

The sealing cover 430 is made of a soft material, for example, the sealing cover 430 may be made of a silicone material, a rubber material, or other soft materials, so that the sealing performance of the sealing cover 430 can be further improved under the condition of being pressed. The sealing member 800 made of soft material makes the sealing cover 430 more stably fixed in the cylindrical housing, and also enhances the sealing effect between the sealing cover 430 and the cylindrical housing, so that water, dust or other impurities cannot enter the motor 200 through the sealing cover 430. Further, the sealing cover 430 made of soft material can effectively cope with the external impact force transferred by the roller, so that the sealing cover has a good buffering effect, and the service life of the motor 200 influenced by the external impact force directly acting on the motor 200 is avoided.

Referring to fig. 9, 10 and 13, in an embodiment of the present invention, the connection cover 410 is provided with a first wire passing hole 415, the sealing cover 430 is provided with a second wire passing hole 437, and the first wire passing hole 415 is communicated with the second wire passing hole 437.

The utility model discloses an among the technical scheme of implementation, first cross line hole 415 and second and cross line hole 437 intercommunication to make things convenient for outside power cord and control line and motor 200 to be connected, in order to realize providing electric energy and transmission control signal for motor 200. Specifically, the number of the first wire passing holes 415 may be one, and the number of the second wire passing holes 437 may be a plurality arranged at intervals. When the number of the second wire passing holes 437 is plural, one wire passing hole can pass through a power line or a control line, so as to prevent a gap from being formed between the power line or the control line and the second wire passing holes 437, thereby affecting the sealing effect.

Referring to fig. 11 and 12, in an embodiment of the present invention, the fixing member 700 is provided with a connecting groove 710 towards the end surface of the first end cap 400, a groove wall of the connecting groove 710 is further provided with a mounting hole 4131, the second end 413 extends into the connecting groove 710, the second end 413 is further connected with a hinge shaft 470, and two ends of the hinge shaft 470 are rotatably inserted into the mounting hole 4131.

In the technical solution of the present invention, the motion of the high rotational speed and the low torque of the rotating shaft 210 is changed into the motion of the low rotational speed and the high torque of the output shaft 325 through the conversion of the reduction gearbox 300, so as to realize the effective driving of the output shaft 325 to the roller. Since the end of the fixing member 700 far from the connection cover 410 is used for fixing with the drum; alternatively, one end of the fixing member 700, which is far away from the connecting cover 410, is used for fixing with other mechanical structures such as a sweeping robot, so as to fix the whole motor assembly 1000 with the robot, and the fixing member 700 is hinged to the connecting cover 410. Thus, the roller drives the fixing member 700 to rotate during rolling cleaning, and the connecting cover 410 rotatably connected to the fixing member 700 can be prevented from rotating with the roller. In addition, the connection cover 410 and the fixing member 700 are rotatably connected to cope with external impact, thereby achieving a buffering effect.

Referring to fig. 11 and 12, further, the fixed member 700 is provided with a connection groove 710 at an end facing the connection end, and the connection groove 710 is further provided to facilitate the connection between the connection cover 410 and the fixed member 700, position and guide the connection between the connection cover 410 and the fixed member 700, so as to improve the connection efficiency between the fixed member 700 and the connection cover 410.

Further, the surface of the fixing member 700 facing away from the connecting cover 410 is further provided with a fixing hole 720, and the fixing member 700 can be detachably fixed on the drum by the cooperation of a fastener such as a screw or a pin and the fixing hole 720. Specifically, the number of the fixing holes 720 is plural, and the plural fixing holes 720 are provided at intervals along the end of the fixing member 700 to increase the reliability of the connection between the fixing member 700 and the drum.

The utility model discloses an in the embodiment, still be equipped with the hole 740 of stepping down on the mounting 700, the hole 740 of stepping down can set up in the terminal surface of mounting 700 to with locate the first line hole 415 intercommunication setting of crossing on the connecting cover 410, in order to make things convenient for power cord and signal line to wear out, be convenient for walk the line.

In an embodiment of the present invention, the peripheral wall of the fixing member 700 is further concavely provided with a storage groove 730, the storage groove 730 is connected to the fixing member 700, the storage groove 730 is connected to the end face of the connecting cover 410, and the storage groove 730 is connected to the fixing member 700.

In an embodiment of the present invention, the number of the storage slots 730 may be one, or may be a plurality of slots arranged at intervals. A plurality of receiving grooves 730 are provided at intervals along the sidewall surface of the fixing member 700. The receiving groove 730 is communicated with the end surface of the fixing member 700 facing away from the connecting cover 410, and the receiving groove 730 extends toward one end of the connecting cover 410. It should be noted that the receiving groove 730 is not communicated with the end surface of the fixing member 700 facing the connection cover 410. Thus, when the sweeping robot performs cleaning operation, impurities such as hair and dust drawn along the roller can be contained in the containing groove 730, and the influence of the impurities such as hair and dust on the rotation of the roller is avoided. Meanwhile, after cleaning, the motor assembly 1000 is separated from the drum to clean up impurities such as hair and dust in the storage tank 730.

Referring to fig. 3 and 5, in an embodiment of the present invention, the motor assembly 1000 further includes at least two sealing members 800, one of the sealing members 800 is interposed between the first end cap 400 and the inner wall surface of the casing 100, and the other sealing member 800 is interposed between the second end cap 500 and the inner wall surface of the casing 100.

In an embodiment of the present invention, a sealing member 800 is sandwiched between the first end cap 400 and the inner wall surface of the casing 100 to seal the opening at one end of the casing 100. A sealing member 800 is also interposed between the second end cap 500 and the inner wall surface of the casing 100 to seal an opening of the casing 100 at an end away from the motor 200. Like this, through sealing the opening with casing 100 both ends to prevent impurity such as ponding, dust from entering into motor 200 and reducing gear box 300 via casing 100 in, promote motor assembly 1000's waterproof performance. The material of the sealing member 800 is soft, and may be rubber or silicone rubber. Such materials are easy to deform after being extruded, can be better attached to the gaps between the housing 100 and the first end cap 400 and between the housing 100 and the second end cap 500, and can achieve better sealing effect.

Further, in an embodiment of the present invention, a first fixing groove 4111 is further formed on a surface of the first end cap 400, the first fixing groove 4111 is disposed around a sidewall of the first end cap 400, the sealing element 800 is fixed in the first fixing groove 4111, and at least a portion of the sealing element 800 further protrudes from the sidewall of the first end cap 400 and abuts against an inner wall surface of the housing 100;

the surface of the second end cap 500 is further provided with a second fixing groove 510, the second fixing groove 510 is disposed around the sidewall of the second end cap 500, the sealing member 800 is fixed in the second fixing groove 510, and at least a portion of the sealing member 800 further protrudes out of the sidewall of the second end cap 500 and abuts against the inner wall surface of the housing 100.

In the technical solution of an embodiment of the present invention, specifically, the first fixing groove 4111 is disposed on the surface of the connection cover 410 in the first end cover 400, and the first fixing groove 4111 surrounds the sidewall of the connection cover 410. Thus, the first fixing groove 4111 can position the sealing element 800, prevent the sealing element 800 from sliding relative to the connecting cover 410 after being assembled, ensure that the sealing element 800 is clamped and fixed between the connecting cover 410 and the housing 100, and ensure that an assembly gap between the connecting cover 410 and the housing 100 is fixed, so as to improve the sealing effect of the sealing element 800.

Similarly, the second fixing groove 510 disposed on the surface of the second end cap 500 and the first fixing groove 4111 disposed on the surface of the connecting cap 410 have the same function, and also play a role in positioning the sealing member 800 to improve the sealing effect, which is not described herein again.

Referring to fig. 6 and 7, further, in an embodiment of the present invention, the sealing member 800 includes a first sealing section 810 and a second sealing section 830, one end of the first sealing section 810 and one end of the second sealing section 830 are connected, and the other end forms an opening structure, and the opening of the sealing member 800 is disposed toward the opening of the casing 100.

In the technical solution of an embodiment of the present invention, during assembly, the motor 200 and the reduction gearbox 300 are sleeved into the casing 100 from both ends of the casing 100, and a certain interference between the sealing member 800 and the casing 100 is required to achieve the waterproof effect. In an actual production process, since the manufacturing tolerance range of the housing 100, the motor 200 or the reduction gearbox 300 is large, if a sufficient interference is required to be ensured, the housing 100 is excessively extruded and damages the sealing element 800 during an assembly process, so that a poor sealing and waterproof effect is caused. Meanwhile, the too large interference magnitude also increases the difficulty of assembling the shell 100 with the motor 200 and the reduction gearbox 300, and greatly reduces the production efficiency. Therefore, in the technical solution of the present invention, the sealing element 800 is arranged to have the first sealing section 810 and the second sealing section 830 connected by one end, and the other ends of the first sealing section 810 and the second sealing section 830 are open structures, so that the cross section of the sealing element 800 is in a Y shape or a V shape. Also, the opening of the seal 800 is disposed toward the opening of the case 100. Thus, when the casing 100 is assembled with the motor 200 or the casing 100 is assembled with the reduction gearbox 300, the sealing element 800 is of an open structure, when the casing extrudes, the first sealing section 810 and the second sealing section 830 can deform to a clearance position, and after the assembly is completed, the first sealing section 810 and the second sealing section 830 tend to rebound, so that the inner wall surface of the casing 100 and the surfaces of the first end cover 400 and the second end cover 500 are better attached, and the sealing effect is achieved. Meanwhile, the sealing effect of the sealing element 800 is prevented from being damaged due to excessive extrusion during assembly.

Moreover, compared with the O-shaped sealing element 800, the embodiment of the present invention can effectively form the empty space for assembly by adopting the Y-shaped or V-shaped sealing element 800, and reduce the possibility of crushing the sealing ring. Moreover, by adopting the Y-shaped or V-shaped sealing member 800, the interference between the sealing member 800 and the housing 100 can be increased appropriately, and the waterproof effect can be achieved more reliably without reducing the assembling efficiency.

Referring to fig. 5 to 7, in an embodiment of the present invention, the axial supporting member 600 includes an inner ring 610 and an outer ring 630 rotatably connected to each other, the inner ring 610 of the axial supporting member 600 is sleeved on the side wall of the connecting cover 410, and the outer ring 630 abuts against the inner wall surface of the drum. Since the inner ring 610 and the outer ring 630 of the axial support 600 are rotatably disposed, the outer ring 630 is rotated when the roller rotates, and the inner ring 610 connected to the connecting cover 410 is kept stationary to prevent the roller from rotating the motor 200.

It is understood that the axial support 600 may be a deep groove ball bearing. Rolling bearings such as self-aligning ball bearings. The inner ring 610 of the axial supporter 600 and the connection cover 410 may be fixed by spline-fitting, and the outer ring 630 of the axial supporter 600 is in clearance-fitting with the inner wall surface of the drum. Under the normal use state, axial support piece 600 does not contact the cylinder, and supports the cylinder by first end cover 400, and when the cylinder takes place tremble or the swing, axial support piece 600 just contacts with the internal face of cylinder for the rotation of cylinder can not destroy motor element 1000, has prolonged motor element 1000 and the robot's of sweeping the floor life. Although the motor assembly 1000 is not rotated as a whole, the first end cap 400, the motor 200, the reduction gearbox 300 and the second end cap 500 are arranged in a matched manner in sequence, so that the motor assembly 1000 has uniform quality, and the phenomenon that the floor sweeping robot shakes to affect the user experience due to uneven gravity distribution is avoided.

Further, in order to ensure the supporting function of the axial supporting member 600 on the motor 200 without hindering the rotation of the drum, the axial supporting member 600 may be axially limited. Specifically, the outer wall surface of the connection cover 410 is further provided with a limiting groove 417, the limiting groove 417 is located between the first end 411 and the second end 413, and the first end 411 is further provided with an abutting surface 4115; the motor assembly 1000 further includes a limiting member 450, the limiting member 450 is fixed to the limiting groove 417, at least a portion of the limiting member 450 protrudes out of the outer wall of the connecting cover 410, so that the limiting member 450 abuts against the end surface of the axial supporting member 600, and the end surface of the axial supporting member 600 away from the limiting member 450 also abuts against the abutting surface 4115 for limiting.

The utility model discloses an among the technical scheme of an embodiment, the peripheral wall round setting of the spacing groove 417 encircleing the connection lid 410 body, the intermediate position of connection lid 410 length direction is roughly located to spacing groove 417, locating part 450 is for having open-ended axial clamp, the external diameter of locating part 450 is greater than the external diameter setting of connection lid 410 to make locating part 450 be fixed in can also bulge the setting of the side wall face of connection lid 410 behind spacing groove 417, convenient spacing with axial support piece 600 butt. By clamping and fixing the axial supporting member 600 between the limiting member 450 and the abutting surface 4115, the axial supporting member 600 is prevented from sliding in the axial direction when being matched with the connecting cover 410, and the axial supporting member 600 is ensured to play a reliable supporting role for the motor 200.

In the application, the first end cover 400 is adopted to fix one end of the motor 200, and the structure design of the axial support 600 sleeved outside the first end cover 400 is simple; especially for the drum with smaller size, the outer ring 630 of the axial supporter 600 is fixedly connected to the inner wall of the drum, so that the installation and fixation of the axial supporter 600 are facilitated.

The utility model discloses still provide a robot of sweeping floor, this robot of sweeping floor includes cylinder and motor element 1000, and this motor element 1000's concrete structure refers to above-mentioned embodiment, owing to this robot of sweeping floor has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, no longer gives unnecessary details one by one here. Wherein the cylinder also is the structure setting of tube-shape, the position mouth of stepping down of cylinder lateral wall, motor element 1000 is fixed in the inside of cylinder through the position mouth installation of stepping down of cylinder lateral wall.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. The utility model provides a motor element for the robot of sweeping the floor, the robot of sweeping the floor includes the cylinder, its characterized in that, motor element includes:

the motor is provided with a rotating shaft;

2. The motor assembly of claim 1, wherein the reduction box further comprises a box body, the inner wall surface of the box body is provided with a limiting step, the reduction mechanism and the limiting shaft are both arranged in the box body, and the reduction box further comprises:

3. The motor assembly of claim 2, further comprising:

4. The motor assembly as claimed in claim 2, wherein the end surface of the fixed member facing the first end cap is provided with a connecting groove, the wall of the connecting groove is further provided with a shaft hole, the end of the first end cap away from the motor is inserted into the connecting groove, the first end cap is further connected with a hinge shaft, and two ends of the hinge shaft are rotatably inserted into the shaft hole.

5. The motor assembly of claim 4, wherein the end surface of the fixing member facing away from the first end cover is further provided with a fixing hole, and the fixing member is fixedly connected to the drum through the matching of a fastener and the fixing hole;

6. The motor assembly according to any one of claims 2 to 5, wherein the speed reduction mechanism comprises:

7. The motor assembly of claim 6, wherein the output planetary gear set includes a second planet carrier, the second planet carrier is in drive connection with the output shaft, and the axial limiting mechanism abuts against the second planet carrier and the box body respectively; and

8. The electric motor assembly of claim 7, wherein the axial stop assembly comprises:

9. The motor assembly of claim 8, wherein a side wall surface of the output shaft is further provided with a snap ring, the snap ring being secured within the snap ring, at least a portion of the snap ring further being disposed to protrude from the side wall surface of the output shaft to abut the second flange ring.

10. A sweeping robot comprising a drum and a motor assembly as claimed in any one of claims 1 to 9.