Roller brush assembly and sweeping robot

Abstract

The present invention relates to a roller brush assembly and a sweeping robot. The roller brush assembly comprises: a roller brush, comprising a roller brush body and a mounting portion, the mounting portion being disposed at one axial end of the roller brush body; an end cap, comprising a cover body and a comb-tooth portion, the cover body being sleeved over the mounting portion; the cover body having an axially inner end face and an axially outer end face arranged along the axial direction of the roller brush body, the comb-tooth portion being disposed on the axially inner end face so as to face the roller brush body. When the roller brush rotates, the roller brush can draw dust from the ground through a dust suction port for cleaning. During the cleaning process, if hair becomes entangled with the roller brush body, as the roller brush body rotates, the hair will gradually gather toward the end cap at the end, and then be collected by the comb-tooth portion of the end cap toward the roller brush body. This prevents the hair from entering locations such as the electrode output terminal connected to the roller brush, preventing the roller brush from being stuck due to the entanglement of the hair, thereby ensuring that the roller brush can operate normally.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent electrical appliances, and in particular to a roller brush assembly and a sweeping robot. Background Art

[0002] With the development of economy and the progress of society, people have higher and higher requirements for the quality of life. Therefore, some smart appliances that can free people's hands have emerged. Among them, sweeping robots, as a kind of smart home appliances, play an increasingly important role in people's daily lives.

[0003] A sweeping robot generally includes a dust collection system, a travel system, and a power supply system. The dust collection system is used to collect dust on the ground, the travel system is used to drive the sweeping robot to move, and the power supply system is used to provide energy for the dust collection system and the travel system. Generally, the dust collection system includes a roller brush mechanism, which includes a housing, a roller brush assembly, and a roller brush cover. The roller brush assembly is located within the housing, and the roller brush cover is located on the housing. The roller brush cover has a dust collection port that allows the roller brush assembly to contact the ground. When the roller brush assembly rotates, the dust is drawn through the dust collection port for suction and cleaning. However, after using traditional roller brush assemblies for a period of time, the roller brush is easily stuck due to excessive hair entanglement, which in turn affects the normal operation of the roller brush. Summary of the Invention

[0004] In view of the problem that a roller brush is easily entangled with hair, the present invention proposes a roller brush assembly and a sweeping robot, which can achieve the technical effect of preventing the roller brush from being entangled with hair.

[0005] A roller brush assembly, comprising:

[0006] A roller brush, comprising a roller brush body and a mounting portion, wherein the mounting portion is provided at one axial end of the roller brush body;

[0007] An end cover, comprising a cover body and a comb-teeth portion, wherein the cover body is sleeved outside the mounting portion;

[0008] Wherein, the cover body has an axial inner end surface and an axial outer end surface arranged along the axial direction of the roller brush body, the axial inner end surface is located between the roller brush body and the axial outer end surface, and the comb tooth portion is arranged on the axial inner end surface and faces the roller brush body.

[0009] In the aforementioned roller brush assembly, the cover provides a mounting base for the comb teeth, and the comb teeth are disposed on the axially inner end surface of the cover, with the comb teeth facing the roller brush body. As the roller brush rotates, it can pick up dust from the ground through the suction port for cleaning. Furthermore, if hair becomes entangled with the roller brush body during cleaning, it will gradually gather toward the end cap as the roller brush body rotates. The end cap will then collect the comb teeth toward the roller brush body, preventing the hair from entering locations such as the electrode output terminal connected to the roller brush, preventing the roller brush from becoming stuck due to entanglement with the hair, and thus ensuring the normal operation of the roller brush.

[0010] In one embodiment, the comb-tooth portion is configured to form comb-tooth grooves opening toward the roller brush body.

[0011] In one embodiment, the comb-tooth portion includes a plurality of bosses, which are arranged at intervals on the axial inner end surface, and the comb-tooth groove is formed between two adjacent bosses.

[0012] In one embodiment, the plurality of bosses are arranged around the mounting portion, and a winding gap is reserved between the plurality of bosses and the mounting portion.

[0013] In one embodiment, auxiliary collecting grooves are formed on outer surfaces of at least some of the plurality of bosses facing away from the mounting portion.

[0014] In one embodiment, the plurality of bosses are spaced apart from each other along the circumference of the cover body, each boss is provided with the auxiliary collecting groove, and the plurality of auxiliary collecting grooves on the plurality of bosses are connected to each other along the circumference of the cover body.

[0015] In one embodiment, the end cover further includes a blocking rib, and the blocking rib is annularly arranged on the outer peripheral surface of the cover body along the circumference of the cover body.

[0016] In one embodiment, the cover body includes a ring body and a connecting portion, wherein the connecting portion is located in the inner hole of the ring body and connected to the hole wall of the inner hole;

[0017] The mounting portion is provided with a mounting hole, the connecting portion is sleeved in the mounting hole, and the ring body is sleeved

[0018] In one embodiment, the end covers include two, the mounting portions are provided on two opposite axial sides of the roller brush body, and the two end covers are respectively sleeved on the two mounting portions.

[0019] In one embodiment, the end cover further includes a transmission shaft, and the transmission shaft is provided on the axial outer end surface of the cover body;

[0020] The transmission shaft is integrally formed with the cover body and is used for connecting with the output end of the motor.

[0021] A sweeping robot comprises the above-mentioned roller brush assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of a sweeping robot according to an embodiment of the present invention;

[0023] Figure 2 for Figure 1 A schematic diagram of the structure of the roller brush assembly in the sweeping robot shown;

[0024] Figure 3 for Figure 2 A schematic cross-sectional view of the roller brush assembly shown;

[0025] Figure 4 for Figure 2 An end cap at one axial end of the roller brush assembly;

[0026] Figure 5 for Figure 2 The end cover of the roller brush assembly is shown at the other axial end.

[0027] 200. Sweeping robot; 210. Roller brush cover; 211. Dust suction port; 100. Roller brush assembly; 10. Roller brush; 12. Roller brush body; 14. Mounting portion; 15. Mounting hole; 30. End cover; 32. Cover body; 321. Ring body; 323. Connecting portion; 324. Axial inner end face; 326. Axial outer end face; 33. Blocking rib; 34. Comb tooth portion; 35. Comb tooth groove; 36. Boss; 361. Auxiliary collecting trough; 37. Winding gap; 38. Drive shaft. DETAILED DESCRIPTION

[0028] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0031] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0032] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0034] See Figure 1 In one embodiment of the present invention, a sweeping robot 200 is provided, which includes a dust collection system, a walking system and a power supply system. The dust collection system is used to collect dust on the ground, the walking system is used to drive the sweeping robot 200 to move, and the power supply system is used to provide working energy for the dust collection system and the walking system.

[0035] The dust collection system includes a roller brush mechanism, a dust box, an air duct and a fan. The dust box is connected to the outlet of the roller brush mechanism, and the air duct is connected between the dust box and the fan. When the roller brush mechanism is working, it picks up the dust on the ground, and then the suction force generated by the fan sucks the dust-mixed air into the interior of the sweeping robot. When the dust-mixed airflow passes through the dust box, the dust is filtered in the dust box, and the clean air is discharged from the air duct after passing through the fan, thus realizing the dust collection function.

[0036] The roller brush mechanism includes a housing (not shown), a roller brush assembly 100, and a roller brush cover 210. The roller brush cover 210 is coupled to the housing and encloses a roller brush chamber. The roller brush assembly 100 is disposed within the roller brush chamber so that the roller brush assembly 100 is assembled and protected by the roller brush chamber. Specifically, the housing has an opening through which the roller brush assembly 100 is disposed within the housing. The roller brush cover 210 is disposed at the opening and coupled to the housing. In this way, a roller brush chamber is enclosed between the housing and the roller brush cover 210 so that the roller brush assembly 100 is assembled within the roller brush chamber. Furthermore, the roller brush cover 210 is provided with a dust suction port 211 that is connected to the roller brush chamber. The roller brush assembly 100 can contact the ground through the dust suction port 211 to pick up dust and other garbage on the ground. The garbage is then sucked into the sweeping robot through negative pressure to complete the vacuuming work.

[0037] See Figure 2-Figure 4 In some embodiments, the roller brush assembly 100 includes a roller brush 10 and an end cover 30 . The roller brush 10 includes a roller brush body 12 and a mounting portion 14 . The mounting portion 14 is disposed at one axial end of the roller brush body 12 , and the end cover 30 is sleeved outside the mounting portion 14 .

[0038] Specifically, the end cap 30 includes a cover body 32 and a comb-tooth portion 34. The cover body 32 is sleeved over the mounting portion 14 and has an axially inner end surface 324 and an axially outer end surface 326 arranged axially along the roller brush body 12. The axially inner end surface 324 is located between the roller brush body 12 and the axially outer end surface 326, and the comb-tooth portion 34 is provided on the axially inner end surface 324 and faces the roller brush body 12.

[0039] When the roller brush 10 rotates under the drive of the power supply system, the roller brush 10 can clean the dust on the ground through the dust suction port 211. In addition, if hair is entangled with the roller brush body 12 during the cleaning process, as the roller brush body 12 rotates, the hair will gradually gather toward the end cap 30 at the end of the roller brush body 12, and then be collected by the comb teeth 34 of the end cap 30 toward the roller brush body 12, so as to prevent the hair from entering the motor output terminal connected to the roller brush 10, etc., and prevent the roller brush 10 from being stuck due to the entanglement of hair, thereby ensuring the normal operation of the roller brush 10.

[0040] In some embodiments, the comb-tooth portion 34 is configured to form a comb-tooth groove 35 with an opening toward the roller brush body 12. The comb-tooth groove 35 formed on the comb-tooth portion 34 faces the roller brush body 12, and hair on the roller brush body 12 can be entangled into the comb-tooth groove 35 through the opening of the comb-tooth groove 35. In this way, the hair on the roller brush body 12 can be collected in the comb-tooth groove 35, preventing the hair from entering the motor output part and other locations and blocking the roller brush 10.

[0041] Furthermore, the comb-tooth portion 34 includes a plurality of bosses 36, which are spaced apart on the axial inner end surface 324. Adjacent bosses 36 enclose a comb-tooth groove 35. The bosses 36 are provided on the axial inner end surface 324, projecting toward the roller brush body 12. The comb-tooth groove 35 formed by the bosses 36 opens toward the roller brush body 12, allowing hair to be entangled and collected through the bosses 36 and the comb-tooth groove 35.

[0042] Furthermore, multiple bosses 36 are arranged around the mounting portion 14, with winding gaps 37 reserved between the bosses 36 and the mounting portion 14. Thus, when the cover 32 is sleeved over the mounting portion 14 and the end cap 30 is assembled through the mounting portion 14, the multiple bosses 36 on the end cap 30 are also arranged around the mounting portion 14, with winding gaps 37 reserved between the bosses 36 and the mounting portion 14, allowing hair to pass through the winding gaps 37 and the comb grooves 35 and be wound around the multiple bosses 36.

[0043] Optionally, at least some of the multiple bosses 36 have auxiliary collection grooves 361 on their outer surfaces facing away from the mounting portion 14. By providing grooves on the outer surfaces of the bosses 36, the friction force on the outer surfaces of the bosses 36 can be further increased, thereby collecting hair more effectively.

[0044] Specifically, in this embodiment, multiple bosses 36 are spaced apart from one another along the axial direction of the cover body 32. Each boss 36 defines an auxiliary collection groove 361. The multiple auxiliary collection grooves 361 on the multiple bosses 36 are interconnected along the circumference of the cover body 32. Specifically, the multiple bosses 36 are arranged on a circumference, and the auxiliary collection grooves 361 defined on the outer circumferences of the multiple bosses 36 are interconnected along the circumference. This facilitates the arrangement of multiple bosses 36 on the axial inner end surface 324 of the cover body 32. It is understood that the multiple bosses 36 can also be arranged in other shapes, such as an ellipse, which is not limited here.

[0045] Optionally, the end cap 30 further includes a blocking rib 33, which is annularly protruding on the outer circumference of the cover body 32. In this way, not only can the comb teeth 34 collect hair, but the blocking rib 33 on the cover body 32 can also block the hair, preventing the hair from passing through the end cap 30 and entering other parts of the sweeping robot 200 and affecting the normal operation of the sweeping robot 200. The blocked hair is concentrated and entangled on the end cap 30, which can further improve the hair collection effect of the end cap 30.

[0046] See Figure 4 In some embodiments, the cover 32 includes a ring body 321 and a connecting portion 323. The connecting portion 323 is located within the inner hole of the ring body 321 and connected to the wall of the inner hole. The mounting portion 14 defines a mounting hole 15. The connecting portion 323 is sleeved within the mounting hole 15, and the ring body 321 is sleeved outside the mounting portion 14. In this way, the connecting portion 323, the mounting portion 14, and the ring body 321 are sleeved in sequence from the inside to the outside, so that the connecting portion 323 is securely connected to the mounting portion 14, and the end cover 30 is securely assembled on the mounting portion 14.

[0047] See Figure 2 In some embodiments, two end caps 30 are provided. Mounting portions 14 are provided on opposite axial sides of the roller brush body 12. The two end caps 30 are respectively sleeved over the two mounting portions 14. Thus, by providing end caps 30 on both axial sides of the roller brush body 12, hair can be collected from both axial ends of the roller brush 10, thereby improving the hair blocking effect.

[0048] During assembly, one axial end of the roller brush 10 is connected to the motor, while the other axial end of the roller brush 10 is rotatably mounted on the housing. This allows the motor to drive the roller brush 10 to rotate and remove debris. Specifically, in this embodiment, an end cap 30 is provided at the axial end of the roller brush 10 to collect hair. Failure to install the end cap 30 will affect hair collection, thereby affecting the proper functioning of the roller brush 10.

[0049] To address the aforementioned technical issues, in one embodiment of the present invention, the end cap 30 further includes a drive shaft 38 . The drive shaft 38 is disposed on the axially outer end surface 326 of the cap body 32 . The drive shaft 38 is integrally formed with the cap body 32 and is adapted to interface with the output terminal of the motor. Thus, by integrally forming the drive shaft 38 with the cap body 32 and coupling it with the output terminal of the motor, the motor drives the end cap 30 to rotate, which in turn drives the roller brush 10 to rotate. The end cap 30 is transmission-connected between the motor output terminal and the roller brush 10. If the end cap 30 is not installed, the roller brush 10 will not rotate, thus reminding the user to install the end cap 30, thus preventing the missing end cap 30 from affecting the hair collection function.

[0050] See Figure 3-Figure 4 Furthermore, the connection portion 323 of the end cap 30 is engaged with the mounting hole 15 of the mounting portion 14. The connection portion 323 and the mounting portion 14 are locked against rotation, preventing the end cap 30 from rotating relative to the mounting portion 14. This allows the end cap 30 to reliably transmit the rotational motion output by the motor to the roller brush 10, thereby driving the roller brush 10 in operation. Specifically, the connection portion 323 of the end cap 30 is a polygonal column, and the mounting hole 15 of the mounting portion 14 is a multi-deformable hole that matches the polygonal column. When the polygonal column is inserted into the multi-deformable hole, the end cap 30 can drive the roller brush 10 in synchronous rotation.

[0051] See Figure 2 It can be understood that the end cap 30 at one end of the roller brush 10 connected to the motor is integrally formed with the transmission shaft 38 of the motor, while the end cap 30 at the other end of the roller brush 10 facing away from the motor does not need to be connected to the motor, so there is no need to set the transmission shaft 38. The setting of the transmission shaft 38 can be changed according to actual conditions and is not limited here. In addition, refer to Figure 5 The connecting portion 323 of the end cover 30 on the side facing away from the motor can be set as a circular column. It is only necessary to transfer the end cover 30 to the roller brush 10 through the connecting portion 323. The side where the motor is not set does not need to transmit rotational motion through the end cover 30, and there is no need to prevent the end cover 30 from rotating with the roller brush 10.

[0052] Based on the same concept, an embodiment of the present invention further provides the above-mentioned roller brush assembly 100. The roller brush assembly 100 includes a roller brush 10 and an end cap 30. The roller brush 10 includes a roller brush body 12 and a mounting portion 14. The mounting portion 14 is provided at one axial end of the roller brush body 12. The end cap 30 includes a cover body 32 and a comb-tooth portion 34. The cover body 32 is sleeved outside the mounting portion 14. The cover body 32 has an axial inner end surface 324 and an axial outer end surface 326. The axial inner end surface 324 and the axial outer end surface 326 are arranged along the axial direction of the roller brush body 12. The axial inner end surface 324 is located between the roller brush body 12 and the axial outer end surface 326. The comb-tooth portion 34 is provided on the axial inner end surface 324. In this way, the cover body 32 provides a mounting base for the comb-tooth portion 34. The comb-tooth portion 34 is provided on the axial inner end surface 324 of the cover body 32 so that the comb-tooth portion 34 faces the roller brush body 12. As the roller brush 10 rotates, it can sweep up dust on the floor through the suction port 211 for cleaning. Furthermore, if hair becomes entangled with the roller brush body 12 during the cleaning process, the hair will gradually gather toward the end cap 30 as the roller brush body 12 rotates. The end cap 30 then collects the hair toward the comb teeth 34 of the roller brush body 12. This prevents the hair from entering locations such as the electrode output terminal connected to the roller brush 10, preventing the roller brush 10 from becoming stuck due to entanglement, thereby ensuring the normal operation of the roller brush 10.

[0053] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0054] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A roller brush assembly, characterized in that: The roller brush assembly comprises: A roller brush (10), the roller brush (10) comprising a roller brush body (12) and a mounting portion (14), the mounting portion (14) being arranged at one axial end of the roller brush body (12); An end cover (30), the end cover (30) comprising a cover body (32) and a comb tooth portion (34), the cover body (32) being sleeved outside the mounting portion (14); The cover (32) has an axial inner end surface (324) and an axial outer end surface (326) arranged along the axial direction of the roller brush body (12); the axial inner end surface (324) is located between the roller brush body (12) and the axial outer end surface (326); and the comb tooth portion (34) is provided on the axial inner end surface (324) and faces the roller brush body (12); The comb tooth portion (34) is constructed to form a comb tooth groove (35) with an opening toward the roller brush body (12), and the comb tooth groove (35) is used to collect hair; the comb tooth portion (34) includes a plurality of bosses (36), and the plurality of bosses (36) are arranged at intervals on the axial inner end surface (324), and the plurality of bosses (36) are arranged at intervals along the circumference of the cover body (32), and the comb tooth groove (35) is enclosed between two adjacent bosses (36).

2. The roller brush assembly according to claim 1, characterized in that: The plurality of bosses (36) are arranged around the mounting portion (14), and a winding gap (37) is reserved between the plurality of bosses (36) and the mounting portion (14).

3. The roller brush assembly according to claim 2, characterized in that: An auxiliary collecting groove (361) is provided on the outer surface of at least some of the bosses (36) of the plurality of bosses (36) facing away from the mounting portion (14).

4. The roller brush assembly according to claim 3, characterized in that: Each of the bosses (36) is provided with the auxiliary collecting groove (361), and the multiple auxiliary collecting grooves (361) on the multiple bosses (36) are interconnected along the circumference of the cover body (32).

5. The roller brush assembly according to any one of claims 1 to 4, characterized in that: The end cover (30) further comprises a blocking rib (33), wherein the blocking rib (33) is arranged in an annular shape on the outer peripheral surface of the cover body (32) along the circumference of the cover body (32).

6. The roller brush assembly according to any one of claims 1 to 4, characterized in that: The cover body (32) comprises a ring body (321) and a connecting portion (323), wherein the connecting portion (323) is located in the inner hole of the ring body (321) and is connected to the hole wall of the inner hole; The mounting portion (14) is provided with a mounting hole (15), the connecting portion (323) is sleeved in the mounting hole (15), and the ring body (321) is sleeved outside the mounting portion (14).

7. The roller brush assembly according to any one of claims 1 to 4, characterized in that: The end covers (30) include two, and the mounting portions (14) are provided on opposite axial sides of the roller brush body (12), and the two end covers (30) are respectively sleeved on the two mounting portions (14).

8. The roller brush assembly according to any one of claims 1 to 4, characterized in that: The end cover (30) further includes a transmission shaft (38), and the transmission shaft (38) is arranged on the axial outer end surface (326) of the cover body (32); The transmission shaft (38) is integrally formed with the cover body (32) and is used for connecting with the output end of the motor.

9. A sweeping robot, characterized in that: The roller brush assembly comprises the roller brush assembly described in any one of claims 1 to 8.

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