Driving device, rolling brush assembly and cleaning equipment

Abstract

The invention is suitable for the technical field of surface cleaning equipment, and particularly relates to a driving device which comprises a shell and a motor arranged in the shell, a via hole is formed in the front end of the shell, a sealing gasket is arranged on the front portion in the shell, and the sealing gasket comprises a base and a boss protruding out of the front side of 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 invention 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 present invention belongs to the technical field of surface cleaning equipment, and in particular relates to a driving device, a roller brush assembly and a cleaning equipment. Background Art

[0002] Common surface cleaning equipment includes: floor cleaning equipment (such as floor scrubbers, smart sweeping robots, vacuum cleaners), table cleaning equipment and wall cleaning equipment (such as glass cleaning machines), etc. Currently, the mainstream structures of the above-mentioned surface cleaning equipment are basically equipped with at least one roller brush, which cleans the surface to be cleaned by rotating the roller brush.

[0003] For example, the rotation of the roller brush of the common floor scrubbers on the market is driven by a roller brush driving device. Usually, the roller brush driving device includes a driving motor, a transmission assembly, a casing and other components. There is a type of driving device that is installed and extends into the roller brush barrel, so that both sides of the roller brush can be close to the wall when used for cleaning.

[0004] The above-mentioned roller brush drive device usually has its service life affected by waterproofing and heat dissipation. In the prior art, there is a method of setting heat dissipation holes on the outer shell of the drive device to solve the heat dissipation problem of the heat dissipation drive motor, but ignores the waterproofing problem of the drive motor. Usually, such inventors believe that heat dissipation is the main problem that determines the life of the drive device. However, the present inventor believes that with the continuous advancement of technology, the heat resistance of the above-mentioned drive motor is getting better and better, and the service life of the motor can be improved by selecting materials with higher heat tolerance. Therefore, the waterproofing problem is the main contradiction that determines the life of the drive device. For this reason, the present inventor proposes a new drive device. Summary of the invention

[0005] One of the purposes of the present invention is to provide a driving device with good waterproof effect so as to increase the service life of the driving device.

[0006] The technical solution of the present invention is achieved in this way:

[0007] A driving device comprises a shell and a motor arranged in the shell, the front end of the shell is provided with a through hole, the front part of the shell is provided with a sealing gasket, the sealing gasket comprises a base and a boss protruding from the front side of the base, the boss is provided with an axial hole 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 with 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 installed, 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.

[0008] Optionally, a groove surrounding the shaft hole is provided on the rear side of the sealing gasket, the groove divides the rear portion of the boss into an inner ring portion and an outer ring portion, and the groove is configured to taper toward the groove bottom.

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

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

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

[0012] Optionally, a plurality of avoidance openings are provided on the base of the sealing gasket, a positioning column is provided at a position corresponding to at least one of the avoidance openings on the front inner wall of the shell, and a fixing hole which passes through to the outside of the shell is provided at the positions corresponding to the remaining avoidance openings, and screw holes are provided one by one at the positions corresponding to the avoidance openings on the motor. 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.

[0013] Optionally, the sealing pad is a silicone pad.

[0014] Another object of the present invention is to provide a roller brush assembly, comprising a roller brush body and a driving device, wherein the roller brush body comprises a roller, a first connecting structure is provided inside the roller, the driving device adopts any of the driving devices described above, 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.

[0015] Optionally, one end of the drum is closed and the other end is open, and an end cover is provided at the rear end of the outer shell of the driving device. During installation, the driving device extends into the drum from the open end of the drum, and 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.

[0016] Another object of the present invention is to provide a cleaning device, wherein the cleaning device is provided with a driving device as described above, or the cleaning device is provided with a roller brush assembly as described above.

[0017] The drive device of the present invention is provided with a sealing gasket at the place where the output shaft of the motor extends out of the housing of the drive device, so that the output shaft of the motor can be sealed while satisfying its rotation, 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 drive device and further improving the service life of the drive device.

[0018] The roller brush assembly and cleaning device of the present invention have the same beneficial effects due to the application of the above-mentioned driving device.

[0019] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional diagram of the cleaning device and the roller brush assembly provided by an embodiment of the present invention when assembled;

[0021] Figure 2 A three-dimensional diagram of a roller brush body of a cleaning device provided by an embodiment of the present invention when disassembled;

[0022] Figure 3 A three-dimensional diagram of a roller brush assembly provided by an embodiment of the present invention when disassembled;

[0023] Figure 4 A three-dimensional diagram of a driving device provided by an embodiment of the present invention;

[0024] Figure 5 An exploded diagram of a driving device provided by an embodiment of the present invention;

[0025] Figure 6 A three-dimensional diagram of a front housing of a driving device provided by an embodiment of the present invention;

[0026] Figure 7 A three-dimensional diagram of a sealing gasket provided in an embodiment of the present invention when viewed from above;

[0027] Figure 8 A bottom-view stereoscopic view of a sealing gasket provided by an embodiment of the present invention;

[0028] Fig. 9 A sectional perspective view of a sealing gasket provided in an embodiment of the present invention;

[0029] Fig.10 A cross-sectional view of a roller brush assembly provided by an embodiment of the present invention;

[0030] Fig.11 This is a partial enlarged view of the sealing gasket provided in an embodiment of the present invention during installation.

[0031] The names and numbers of the components in the figure are:

[0032] 1. Shell; 2. Motor; 3. Sealing pad; 10. Driving device; 11. Front shell; 12. Rear shell; 13. End cover; 14. Buckle structure; 15. Bolt; 16. Second connection structure; 20. Roller brush body; 21. Output shaft; 22. Screw hole; 30. Cleaning device; 31. First sealing ring; 32. Second sealing ring; 33. Shaft hole; 34. Avoidance; 35. Groove; 36. Third sealing ring; 41. Fourth sealing ring; 42. Fifth sealing ring; 111. Positioning column; 112. Fixing hole; 113. Through hole; 201. Roller; 202. Opening; 203. First connection structure; 301. Base; 302. Boss; 303. Positioning convex eaves; 304. Inner ring; 305. Outer ring. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] Please refer to the attached Figure 1-11 As shown, an embodiment of the present invention provides a driving device 10, comprising 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 sealing gasket 3 is provided in the front part of the housing 1, and the sealing gasket 3 is set as a silicone pad. The sealing gasket 3 comprises a base 301 and a boss 302 protruding from the front side of the base 301, an axial hole 33 axially penetrating the front and rear sides of the seal is provided on the boss 302, a first sealing ring 31 and a second sealing ring 32 arranged at intervals in the front and rear are axially protruded in the axial hole 33, and the first sealing ring 31 and the second sealing ring 32 are both inclined at an acute angle to the front 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 protrudes out of the housing 1, and the first sealing ring 31 and the second sealing ring 32 are both against the output shaft 21 of the motor 2.

[0035] The driving device 10 of the present invention is provided with a sealing gasket 3 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 the output shaft 21 of the motor 2 can be rotated while being sealed to prevent 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 sealing gasket 3 is provided with an axial hole 33 which axially penetrates the front and rear sides of the seal, the axial 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 to the driven roller brush for rotation. Therefore, relative rotation is required between the output shaft 21 and the axial hole 33. Therefore, the present invention also provides a first sealing ring 31 and a second sealing ring 32 which are spaced apart in the front and rear along the axial direction in the axial hole 33, so that the output shaft 21 can rotate in the axial hole 33, and the first sealing ring 31 and the second sealing ring 32 can prevent water from entering the housing 1 from the gap between the output shaft 21 and the axial hole 33. More importantly, the first sealing ring 31 and the second sealing ring 32 are arranged to be inclined at an acute angle to the front hole wall in the shaft hole 33, so that when the output shaft 21 is initially installed, it is inserted into the shaft hole 33 in the direction of inclination of the first sealing ring 31 and the second sealing ring 32, and the first sealing ring 31 and the second sealing ring 32 will not be turned over; during normal use after the output shaft 21 is installed, the first sealing ring 31 and the second sealing ring 32 form a lip-shaped double-layer sealing structure on the outer side of the output shaft 21, and the waterproof effect is good; and 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 ring causes certain wear, which is due to the above-mentioned inclined setting of the first sealing ring 31 and the second sealing ring 32. Therefore, 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, thereby ensuring a long-term sealing effect.

[0037] Furthermore, the rear side of the sealing gasket 3 is provided with a groove 35 surrounding the shaft hole 33, and 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 configured to be tapered from the notch to the bottom of the groove. By providing the groove 35 tapering from the notch to the bottom of the groove, the inner ring part 304 forms a tendency to shrink inward, thereby further improving the automatic compensation effect of the sealing ring, making the sealing 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 deviate to the side of the groove 35 during the process of inserting the output shaft 21 into the shaft hole 33, thereby making the insertion operation of the output shaft 21 more convenient and labor-saving.

[0038] The front side of the boss 302 is provided with a radially outwardly protruding limiting convex 303, and the limiting convex convex 303 is used to clamp the outer side of the through hole 113 on the housing 1, so that the sealing gasket 3 will not automatically fall out of the through hole 113 after installation. The front side of the base 301 is surrounded by the boss 302 and is provided with a forwardly protruding third sealing ring 36, and the third sealing ring 36 is used to strengthen the sealing performance between the outer side of the sealing gasket 3 and the housing 1, and prevent water from flowing into the housing 1 from between the housing 1 and the outer side of the sealing 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 configured as a detachably connected front housing 11 and a rear housing 12, so that it is convenient to open the housing 1 so as to replace the sealing gasket 3 in the housing 1; in addition, it can also be used to replace a broken motor 2, so as to avoid the problem that only the entire drive device 10 can be replaced when the motor 2 is damaged, and reduce the subsequent 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-on structure 14, that is, a card seat is provided on the front housing 11, and a bayonet is provided at a corresponding position on the rear housing 12. The base 301 of the sealing gasket 3 is provided with a plurality of avoidance openings 34, and a positioning column 111 is provided at the front inner wall of the housing 1 corresponding to at least one of the avoidance openings 34, and a fixing hole 112 which is used to penetrate to the outside of the housing 1 is provided at the remaining avoidance openings 34, and a screw hole 22 is provided on the motor 2 corresponding to the avoidance openings 34, and the positioning column 111 passes through the avoidance openings 34 and is embedded in the corresponding screw hole 22, and the fixing hole 112 is extended from the outside of the housing 1 to the inside of the housing 1 by the corresponding bolt 15 to connect with the screw hole 22. 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 sealing gasket 3 to generate torque, in order to prevent the sealing gasket 3 from being driven to rotate, the positioning column 111 is provided at some positions, and the screw hole 22 on the motor 2 is connected and fixed by the positioning column 111, so as to fix the sealing gasket 3 in the circumferential direction; at the same time, fixing holes 112 are provided at other positions, and the sealing gasket 3 is further fixed by screwing the screw hole 22. In addition, the arrangement of the positioning column 111 also provides an installation positioning effect when the sealing gasket 3 is initially installed, making the installation of the sealing gasket 3 more convenient. In this embodiment, the avoidance openings 34 are arranged in a cross-staggered manner on the base 301 of the sealing gasket 3, wherein the front inner wall of the housing 1 corresponding to two straight-line opposite avoidance openings 34 is set as the positioning column 111, and the housing 1 corresponding to the other two avoidance openings 34 is set as the fixing hole 112.

[0040] The present embodiment also provides a roller brush assembly, including a roller brush body 20 and a driving device 10, wherein the roller brush body 20 includes a roller 201, wherein a first connecting structure 203 is provided in the barrel of the roller 201, and the driving device 10 adopts any of the driving devices 10 described above, wherein the driving device 10 is arranged in the barrel of the roller 201, and a second connecting structure 16 is provided at the outer end of the output shaft 21 of the motor 2 of the driving device 10, and the first connecting structure 203 is matched and connected with the second connecting structure 16.

[0041] Optionally, one end of the roller 201 is closed and the other end is open 202, and the rear end of the housing 1 of the driving device 10 is provided with an end cover 13. When installed, the driving device 10 extends into the cylinder from one end of the opening 202 of the roller 201, and the end cover 13 is sealed on the opening 202, and a fifth sealing ring 42 is provided at the junction of the end cover 13 and the roller 201. Therefore, in this embodiment, one end of the roller 201 is closed, and the opening 202 at the other end is sealed by the end cover 13, so that water outside the roller 201 cannot enter the cylinder, which is the first layer of sealing, and the sealing of the driving device 10 itself is the second layer of sealing, so that the roller brush assembly formed in this way has a better waterproof effect.

[0042] This embodiment further provides a cleaning device 30, wherein the cleaning device 30 is provided with a driving device 10 as described above, or the cleaning device 30 is provided with a roller brush assembly as described above.

[0043] To sum up, the driving device 10 of the present invention is provided with a sealing gasket 3 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 the output shaft 21 of the motor 2 can be rotated while being sealed to prevent water from entering the housing 1 from the junction 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.

[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-mentioned driving device 10.

[0045] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

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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