Driving device, rolling brush assembly and cleaning equipment

Abstract

The utility model is applicable to the technical field of surface cleaning equipment, in particular to a driving device, which comprises a shell and a motor arranged in the shell, a via hole is arranged at the front end of the shell, a sealing gasket is arranged at the front part in the shell, the sealing gasket comprises a base and a boss convexly extending to the front side of the base, and the boss is arranged on the base. A boss is arranged on the base, a shaft hole axially penetrating through and sealing the front side and the rear side is formed in the boss, a first sealing ring and a second sealing ring which are arranged in a front-back spaced mode are arranged in the shaft hole in the axial direction in a protruding mode, and the first sealing ring and the second sealing ring are obliquely arranged in the mode that acute angles are formed between the first sealing ring and the front side hole wall and between the second sealing ring and the front side hole wall. The boss is embedded into the via hole in a matched mode, an output shaft of the motor penetrates through the shaft hole and extends out of the shell, and the first sealing ring and the second sealing ring abut against the output shaft of the motor. The utility model further provides a rolling brush assembly and cleaning equipment applying the driving device, and the rolling brush assembly and the cleaning equipment have the advantages of being good in waterproof effect and long in service life.

Description

Technical Field

[0001] The utility model belongs to the technical field of surface cleaning equipment, and particularly relates to a driving device, a roller brush assembly and a cleaning device. Background Art

[0002] Common surface cleaning equipment includes: floor cleaning equipment (such as floor scrubbers, intelligent sweeping robots, vacuum cleaners), tabletop cleaning equipment and wall cleaning equipment (such as glass washing machines), etc. At present, the mainstream structures of the above-mentioned surface cleaning equipment are basically equipped with at least one roller brush, and the surface to be cleaned is cleaned by the rotation of the roller brush.

[0003] For example, for the common floor scrubber on the market at present, the rotation of its roller brush is driven by a roller brush driving device. Usually, the roller brush driving device includes components such as a driving motor, a transmission component and a housing. There is a layout method in which a type of existing driving device extends into the roller brush barrel after installation, so as to enable both sides of the roller brush to closely adhere to the wall during cleaning use.

[0004] The above-mentioned type of roller brush driving device usually affects its service life due to reasons of waterproofing and heat dissipation. In the prior art, there is a method of setting heat dissipation holes on the housing of the driving device to solve the heat dissipation problem of the driving motor, but the waterproof problem of the driving motor is ignored. Usually, such utility model people believe that heat dissipation is the main problem determining the service life of the driving device. However, the utility model people believe that with the continuous progress of technology, the heat resistance strength of the above-mentioned driving motor is getting better and better, and the service life of the motor can also be improved by selecting materials with higher heat tolerance performance. Therefore, the waterproof problem is the main contradiction determining the service life of the driving device. For this reason, the utility model people propose a brand-new driving device. Summary of the Utility Model

[0005] One of the purposes of the utility model is to provide a driving device with good waterproof effect to improve the service life of the driving device.

[0006] The technical solution of the utility model is realized as follows:

[0007] A driving device includes a housing and a motor arranged in the housing. A through hole is provided at the front end of the housing. A sealing gasket is arranged in the front part of the housing. The sealing gasket includes a base and a convex platform protruding from the front side of the base. An axial hole penetrating through the front and rear sides of the seal is provided on the convex platform. First and second sealing rings are axially protruded and arranged at intervals in the axial hole, and both the first sealing ring and the second sealing ring are inclined at an acute angle with the front side hole wall. During installation, the base is limited in the housing, the convex platform is adaptively embedded in the through hole, the output shaft of the motor passes through the axial hole and extends out of the housing, and both the first sealing ring and the second sealing ring abut against the output shaft of the motor.

[0008] Optionally, a groove surrounding the shaft hole is provided on the rear side of the gasket. The groove divides the rear part of the boss into an inner ring part and an outer ring part, and the groove is tapered from the notch to the bottom of the groove.

[0009] Optionally, a limiting convex eaves protruding radially outward is provided on the front side of the boss.

[0010] Optionally, a third sealing ring protruding forward is provided on the front side of the base around the boss.

[0011] Optionally, the housing includes a front housing and a rear housing. The front housing and the rear housing are detachably connected, and a fourth sealing ring is provided at the connection between the front housing and the rear housing.

[0012] Optionally, a plurality of avoidance openings are provided on the base of the gasket. A positioning post is provided on the inner wall of the front side of the housing corresponding to at least one of the avoidance openings, and a fixing hole penetrating to the outside of the housing is provided at the remaining avoidance openings. A screw hole is provided on the motor corresponding to the avoidance openings one by one. During installation, the positioning post passes through the avoidance opening and is embedded in the corresponding screw hole, and the fixing hole is connected to the screw hole by a corresponding bolt extending from the outside of the housing into the housing.

[0013] Optionally, the gasket is made of a silicone gasket.

[0014] Another object of the present invention is to provide a roller brush assembly, including a roller brush body and a driving device. The roller brush body includes a roller. A first connection structure is provided inside the roller. The driving device adopts any one of the driving devices described above. The driving device is arranged inside the roller, and a second connection structure is provided at the outer end of the output shaft of the motor of the driving device. The first connection structure is cooperatively connected with the second connection structure.

[0015] Optionally, one end of the roller is closed and the other end is open. An end cover is provided at the rear end of the housing of the driving device. During installation, the driving device extends into the roller from the open end, the end cover covers the opening, and a fifth sealing ring is provided at the connection between the end cover and the roller.

[0016] Another object of the present invention is to provide a cleaning device, which is provided with any one of the driving devices described above, or the cleaning device is provided with any one of the roller brush assemblies described above.

[0017] For the driving device of the present invention, a gasket is provided at the position where the output shaft of the motor extends out of the housing of the driving device, so that while satisfying the rotation of the output shaft of the motor, it can be sealed, preventing water from entering the housing from the connection between the output shaft of the motor and the housing, thereby improving the waterproof effect of the entire driving device and further extending the service life of the driving device.

[0018] Since the brush roller assembly and the cleaning device of the present utility model apply the above-mentioned driving device, they have the same beneficial effects.

[0019] Other features and advantages of the present utility model will be described in detail in the subsequent specific implementation section. Description of the Drawings

[0020] Figure 1 A perspective view of the cleaning device and the brush roller assembly during assembly provided by an embodiment of the present utility model;

[0021] Figure 2 A perspective view of the brush roller body of the cleaning device provided by an embodiment of the present utility model during disassembly;

[0022] Figure 3 A perspective view of the brush roller assembly provided by an embodiment of the present utility model during disassembly;

[0023] Figure 4 A perspective view of the driving device provided by an embodiment of the present utility model;

[0024] Figure 5 An exploded view of the driving device provided by an embodiment of the present utility model;

[0025] Figure 6 A perspective view of the front shell of the driving device provided by an embodiment of the present utility model;

[0026] Figure 7 A perspective view of the sealing gasket provided by an embodiment of the present utility model in the top view direction;

[0027] Figure 8 A perspective view of the sealing gasket provided by an embodiment of the present utility model in the bottom view direction;

[0028] Figure 9 A sectional perspective view of the sealing gasket provided by an embodiment of the present utility model;

[0029] Figure 10 A sectional view of the brush roller assembly provided by an embodiment of the present utility model;

[0030] Figure 11 A partially enlarged view of the sealing gasket during installation provided by an embodiment of the present utility model.

[0031] The names and reference numerals of the components in the figure are as follows:

[0032] 1. Housing; 2. Motor; 3. Gasket; 10. Driving device; 11. Front housing; 12. Rear housing; 13. End cover; 14. Snap structure; 15. Bolt; 16. Second connection structure; 20. Brush roller body; 21. Output shaft; 22. Screw hole; 30. Cleaning device; 31. First sealing ring; 32. Second sealing ring; 33. Shaft hole; 34. Avoidance opening; 35. Groove; 36. Third sealing ring; 41. Fourth sealing ring; 42. Fifth sealing ring; 111. Positioning post; 112. Fixing hole; 113. Through hole; 201. Drum; 202. Opening; 203. First connection structure; 301. Base; 302. Boss; 303. Limiting flange; 304. Inner ring part; 305. Outer ring part. Detailed implementation mode

[0033] In order to make the purpose, technical solution and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0034] Please refer to the attached Figures 1-11 As shown, the embodiment of the present utility model provides a driving device 10, which includes a housing 1 and a motor 2 arranged in the housing 1. A through hole 113 is provided at the front end of the housing 1. A gasket 3 is arranged at the front part inside the housing 1, and the gasket 3 is made of silica gel. The gasket 3 includes a base 301 and a boss 302 protruding from the front side of the base 301. An axial shaft hole 33 penetrating through the front and rear sides of the seal is provided on the boss 302. First sealing ring 31 and second sealing ring 32 which are axially spaced front and rear are convexly provided in the shaft hole 33, and both the first sealing ring 31 and the second sealing ring 32 are inclined at an acute angle to the front side hole wall. The base 301 is limited in the housing 1, the boss 302 is adaptively embedded in the through hole 113, the output shaft 21 of the motor 2 passes through the shaft hole 33 and extends out of the housing 1, and both the first sealing ring 31 and the second sealing ring 32 abut against the output shaft 21 of the motor 2.

[0035] In the driving device 10 of the present utility model, a gasket 3 is provided at the place where the output shaft 21 of the motor 2 extends out of the housing 1 of the driving device 10, so that while the output shaft 21 of the motor 2 rotates, it can be sealed, preventing water from entering the housing 1 from the connection between the output shaft 21 of the motor 2 and the housing 1, thereby improving the waterproof effect of the entire driving device 10 and further improving the service life of the driving device 10.

[0036] Specifically, since the boss 302 on the front side of the gasket 3 is provided with a shaft hole 33 that axially penetrates through the front and rear sides of the seal, the shaft hole 33 is used for the output shaft 21 of the motor 2 to pass through and extend out of the housing 1 to connect the rotatable brush to be driven, so relative rotation between the output shaft 21 and the shaft hole 33 is required. Therefore, in the present utility model, a first sealing ring 31 and a second sealing ring 32 that are axially convex and spaced apart from each other are provided in the shaft hole 33. While the output shaft 21 can rotate in the shaft hole 33, the first sealing ring 31 and the second sealing ring 32 prevent water from entering the housing 1 through the gap between the output shaft 21 and the shaft hole 33. More importantly, the first sealing ring 31 and the second sealing ring 32 are arranged to be inclined at an acute angle with the front side hole wall in the shaft hole 33. This enables the output shaft 21 to be inserted into the shaft hole 33 along the inclined direction of the first sealing ring 31 and the second sealing ring 32 during initial installation without causing the first sealing ring 31 and the second sealing ring 32 to flip. During normal use after the output shaft 21 is installed, a lip-shaped double-layer sealing structure is formed outside the output shaft 21 by the first sealing ring 31 and the second sealing ring 32, providing good waterproofing effect. Moreover, due to the friction between the rotation of the output shaft 21 and the first sealing ring 31 and the second sealing ring 32, the sealing rings are worn to a certain extent. This is because of the above-mentioned inclined setting of the first sealing ring 31 and the second sealing ring 32. Thus, by reasonably controlling the height and inclination angle of the first sealing ring 31 and the second sealing ring 32 during design, the effect of automatic compensation of the sealing ring after wear can be achieved, ensuring a long-term sealing effect.

[0037] Furthermore, a groove 35 surrounding the shaft hole 33 is provided on the rear side of the gasket 3. The groove 35 divides the rear part of the boss 302 into an inner ring part 304 and an outer ring part 305, and the groove 35 is set to gradually narrow from the groove opening to the groove bottom. By providing the groove 35 that gradually narrows from the groove opening to the groove bottom, an inward contracting tendency force is formed in the inner ring part 304, further improving the above-mentioned automatic compensation effect of the sealing ring and making the function of the gasket 3 more reliable and durable. In addition, by providing the groove 35, during the process of inserting the output shaft 21 into the shaft hole 33 during installation, compared with the design without the groove 35, the groove 35 can force the inner ring part 304 to shift towards the groove 35 side during the insertion of the output shaft 21 into the shaft hole 33, making the insertion operation of the output shaft 21 more convenient and labor-saving.

[0038] A limiting convex eaves 303 protruding radially outward is provided on the front side of the boss 302. The limiting convex eaves 303 is used to catch the outside of the through hole 113 on the housing 1, so that the gasket 3 will not automatically fall out of the through hole 113 after installation. A third sealing ring 36 protruding forward is provided on the front side of the base 301 around the boss 302. The third sealing ring 36 is used to strengthen the sealing performance between the outside of the gasket 3 and the housing 1, and prevent water from flowing into the housing 1 between the housing 1 and the outside of the gasket 3.

[0039] In some embodiments, the housing 1 includes a front housing 11 and a rear housing 12. The front housing 11 and the rear housing 12 are detachably connected, and a fourth sealing ring 41 is provided at the connection between the front housing 11 and the rear housing 12. The housing 1 is provided as a detachable front housing 11 and rear housing 12, so as to facilitate opening the housing 1 to replace the gasket 3 inside the housing 1; in addition, it can also be used to replace the damaged motor 2, thus avoiding the problem that only the entire drive device 10 can be replaced when the motor 2 is damaged, and reducing the later maintenance cost. The fourth sealing ring 41 is used for waterproofing at the connection between the front housing 11 and the rear housing 12. In this embodiment, the front housing 11 and the rear housing 12 are detachably connected through a snap structure 14, that is, a card seat is provided on the front housing 11, and a bayonet is provided at the corresponding position on the rear housing 12. A plurality of avoidance openings 34 are provided on the base 301 of the gasket 3. A positioning post 111 is provided on the inner wall of the front side of the housing 1 corresponding to at least one of the avoidance openings 34, and a fixing hole 112 penetrating to the outside of the housing 1 is provided at the position corresponding to the remaining avoidance openings 34. Corresponding to the avoidance openings 34 on the motor 2, screw holes 22 are provided one by one. The positioning post 111 passes through the avoidance opening 34 and is embedded in the corresponding screw hole 22. The fixing hole 112 is connected to the screw hole 22 by a corresponding bolt 15 extending from the outside of the housing 1 into the housing 1. It should be noted that since the rotation of the output shaft 21 of the motor 2 during operation will cause friction between the output shaft 21 and the gasket 3 to generate torque, in order to prevent the gasket 3 from being driven to rotate, the above positioning posts 111 are provided at some positions, and the screw holes 22 on the motor 2 connected and fixed by the positioning posts 111 are used to circumferentially fix the gasket 3; at the same time, fixing holes 112 are provided at some other positions, and the gasket 3 is further fixed by screwing the screw holes 22. In addition, the setting of the positioning posts 111 also provides an installation positioning effect when initially installing the gasket 3, making the installation of the gasket 3 more convenient. In this embodiment, 4 avoidance openings 34 are provided on the base 301 of the gasket 3 in a crosswise and staggered manner. The inner wall of the front side of the housing 1 corresponding to 2 linearly opposite avoidance openings 34 is provided as a positioning post 111, and the housing 1 corresponding to the other 2 avoidance openings 34 is provided as a fixing hole 112.

[0040] This embodiment also provides a roller brush assembly, including a roller brush body 20 and a driving device 10. The roller brush body 20 includes a drum 201. A first connection structure 203 is arranged inside the drum 201. The driving device 10 adopts any one of the driving devices 10 described above. The driving device 10 is arranged inside the drum 201, and a second connection structure 16 is arranged at the outer end of the output shaft 21 of the motor 2 of the driving device 10. The first connection structure 203 is cooperatively connected with the second connection structure 16.

[0041] Optionally, one end of the drum 201 is closed and the other end is provided with an opening 202. A end cover 13 is arranged at the rear end of the housing 1 of the driving device 10. During installation, the driving device 10 extends into the drum from the opening 202 end of the drum 201, and the end cover 13 covers the opening 202, and a fifth sealing ring 42 is arranged at the joint of the end cover 13 and the drum 201. Therefore, in this embodiment, one end of the drum 201 is closed, and the opening 202 at the other end is sealed by the end cover 13, so that water outside the drum 201 cannot enter the drum, which is the first layer of sealing. In addition, the sealing of the driving device 10 itself is the second layer of sealing. In this way, the waterproof effect of the formed roller brush assembly is better.

[0042] This embodiment also provides a cleaning device 30, which is provided with any one of the driving devices 10 described above, or the cleaning device 30 is provided with any one of the roller brush assemblies described above.

[0043] In summary, for the driving device 10 of the present invention, a gasket 3 is arranged at the position where the output shaft 21 of the motor 2 extends out of the housing 1 of the driving device 10, so that while the output shaft 21 of the motor 2 rotates, it can be sealed to prevent water from entering the housing 1 from the joint of the output shaft 21 of the motor 2 and the housing 1, thereby improving the waterproof effect of the entire driving device 10 and further extending the service life of the driving device 10.

[0044] The roller brush assembly and the cleaning device 30 of the present invention have the same beneficial effects due to the application of the above driving device 10.

[0045] The technical features of the above embodiments can be combined arbitrarily. For the sake of brief description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0046] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.

[0047] The foregoing is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A driving device, comprising a housing and a motor arranged in the housing, characterized in that: A through hole is provided at the front end of the shell, and a sealing gasket is provided at the front part of the shell, the sealing gasket includes a base and a boss protruding from the front side of the base, an axial hole is provided on the boss axially penetrating the front and rear sides of the seal, a first sealing ring and a second sealing ring are axially protruded in the axial hole at a front and rear interval, and the first sealing ring and the second sealing ring are both inclined at an acute angle to the front hole wall. When installing, the base is limited in the shell, the boss is adaptively embedded in the through hole, the output shaft of the motor passes through the axial hole and protrudes out of the shell, and the first sealing ring and the second sealing ring both abut against the output shaft of the motor.

2. The driving device according to claim 1, characterized in that: A groove surrounding the shaft hole is provided on the rear side of the sealing gasket, wherein the groove divides the rear portion of the boss into an inner ring portion and an outer ring portion, and the groove is configured such that the notch is gradually reduced toward the groove bottom.

3. The driving device according to claim 1 or 2, characterized in that: The front side of the boss is provided with a limiting convex eave protruding radially outward.

4. The driving device according to claim 1 or 2, characterized in that: A third sealing ring protruding forward is arranged around the boss on the front side of the base.

5. The driving device according to claim 1, characterized in that: The housing comprises a front housing and a rear housing, the front housing is detachably connected to the rear housing, and a fourth sealing ring is provided at the connection between the front housing and the rear housing.

6. The driving device according to claim 1 or 5, characterized in that: A plurality of avoidance openings are provided on the base of the sealing gasket, a positioning column is provided on the front inner wall of the shell corresponding to at least one of the avoidance openings, and fixing holes corresponding to the remaining avoidance openings are provided, which penetrate to the outside of the shell, and screw holes are provided on the motor corresponding to the avoidance openings one by one. During installation, the positioning column passes through the avoidance openings and is embedded in the corresponding screw hole, and the fixing hole is connected to the screw hole by extending from the outside of the shell into the inside of the shell through the corresponding bolt.

7. The driving device according to claim 1 or 2, characterized in that: The sealing pad is a silicone pad.

8. A roller brush assembly, comprising a roller brush body and a driving device, characterized in that: The roller brush body includes a roller, a first connecting structure is provided inside the roller, the driving device adopts the driving device as described in any one of claims 1 to 7, the driving device is provided inside the roller, and a second connecting structure is provided at the outer end of the output shaft of the motor of the driving device, and the first connecting structure is matched and connected with the second connecting structure.

9. The roller brush assembly according to claim 8, characterized in that: One end of the drum is closed and the other end is open. The rear end of the shell of the driving device is provided with an end cover. When installed, the driving device extends into the drum from the open end of the drum, the end cover is sealed on the opening, and a fifth sealing ring is provided at the connection between the end cover and the drum.

10. A cleaning device, characterized in that: The cleaning device is provided with a driving device as described in any one of claims 1 to 7, or the cleaning device is provided with a roller brush assembly as described in claim 8 or 9.

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