Sweeper side brush device and sweeping robot

Abstract

The utility model provides a sweeper side brush device and a sweeping robot, which relate to the technical field of sweeping robots and comprise a rotating shaft, a side brush seat, a rotary telescopic side brush arm and a telescopic control assembly. The rotating shaft is in transmission connection with the driving part; the side brush seat is fixedly connected with the rotating shaft; an opening for communicating the winding assembly cavity with the outside is formed in the peripheral side of the winding assembly cavity; the rotary telescopic side brush arm is provided with a first end arranged in the rolling assembly cavity and a second end extending out of the opening; the telescopic control assembly is arranged on the outer side of the rotating shaft and can fix or loosen the first end of the rotary telescopic side brush arm and the side brush seat; during loosening, the side brush seat rotates to adjust the length of the rotary telescopic side brush arm extending out of the side brush seat, and during fixing, the rotary telescopic side brush arm and the side brush seat can rotate synchronously. Therefore, the side brush has the advantages that the cleaning area of the side brush is adjustable, and the cleaning effect on the right-angle corner position is good.

Description

Technical Field

[0001] The utility model relates to the technical field of sweeping robots, in particular to a side brush device of a sweeping machine and a sweeping robot. Background Art

[0002] With the development of technology, robot vacuums are becoming increasingly popular in households. Typically, a robot vacuum consists of a main unit, which includes a dust box or cup, an air pump that provides negative pressure, a rotating brush mounted within the main unit, and a motor that drives the brush. The air pump and brush collect dust and hair into the dust box or cup.

[0003] To better clean debris along the walls, a side brush assembly is added to the left and / or right front sides of the bottom of the sweeping robot. In the prior art, a side brush assembly typically includes a drive motor, a rotating shaft connected to the drive motor, and a side brush holder with several brush strips of equal length around the circumference and fixed to the rotating shaft. Side brush assemblies with brush strips of equal length make it difficult to clean right-angled corners. For this reason, sweeping robots currently on the market use a side brush that swings outward to achieve cleaning at right-angled corners. However, sweeping robots with this structure have the disadvantages of being complex and bulky.

[0004] Therefore, a side brush device for a sweeper and a sweeping robot with an adjustable side brush cleaning area and good cleaning effect at right-angle corners need to be designed. Utility Model Content

[0005] The purpose of the present utility model is to provide a side brush device for a sweeping machine and a sweeping robot in response to the defects and shortcomings of the prior art, which at least solves one of the above-mentioned technical problems. The side brush has the advantages of adjustable cleaning area and good cleaning effect on right-angle corners.

[0006] To achieve the above-mentioned purpose, the present invention provides a side brush device for a sweeper, comprising:

[0007] A rotating shaft, drivingly connected to the driving member;

[0008] The side brush seat is fixedly connected to the rotating shaft; the side brush seat has a winding assembly cavity inside and an opening on the peripheral side connecting the winding assembly cavity with the outside;

[0009] a rotating and telescopic side brush arm having a first end disposed within the reel assembly cavity and a second end extending from the opening;

[0010] a telescopic control assembly, disposed outside the rotating shaft, capable of fixing or releasing the first end of the rotating and telescopic side brush arm from the side brush holder;

[0011] When loosened, the side brush seat rotates to adjust the length of the rotating telescopic side brush arm extending out of the side brush seat; when fixed, the rotating telescopic side brush arm and the side brush seat rotate synchronously.

[0012] Optionally, the telescopic control assembly includes an electromagnet concentrically arranged on the outside of the rotating shaft and located on the upper side of the side brush seat, an armature member fixed to the first end and capable of driving the first end to be adsorbed on the electromagnet, and a permanent magnet fixed in the winding assembly cavity of the side brush seat and located on the lower side of the first end.

[0013] Optionally, the side brush holder includes a side brush base and a side brush cover; the side brush holder is bowl-shaped, and its outer periphery is provided with a fixed-length brush arm extending outward, and the center of the side brush holder has a connecting shaft fixedly connected to the rotating shaft; the side brush cover is provided on the bowl mouth of the side brush base, and has a through hole in the center; the side brush base and the side brush cover cover together to form the opening.

[0014] Optionally, the first end has an annular boss, and the annular boss is sleeved on the connecting shaft; the armature is an iron ring sleeved and fixedly connected to the outer periphery of the annular boss at the first end.

[0015] Optionally, the opening extends along the circumference of the side brush holder, and its height gradually increases from one end to the other end.

[0016] Optionally, the fixed-length brush arm and the rotating and telescopic side brush arm both extend outward along the involute of the side brush base.

[0017] Optionally, the free ends of the fixed-length brush arm and the rotating and telescopic side brush arm have slots for fixing bristles.

[0018] Optionally, the rotating telescopic side brush arm is a brush strip arm made of flexible material, and its side wall at one end close to the first end has bending notches arranged at equal intervals. When the side brush seat rotates, the rotating telescopic side brush arm bends at the bending notch to be rolled up in the rolling assembly cavity.

[0019] Optionally, the side brush device of the sweeper also includes a side brush box assembly; the side brush box assembly includes a side brush box housing, a drive motor and a transmission gear; the rotating shaft is rotatably configured on the side brush box housing; the electromagnet is fixed on the side brush box housing; the transmission gear is configured in the side brush box housing; the driving member is a drive motor that is fixed on the side brush box housing and is connected to the rotating shaft through the transmission gear.

[0020] On the other hand, the present invention also provides a sweeping robot, including a robot body, the chassis of the robot body is equipped with the sweeping machine side brush device as described above, and part of the cleaning area of the sweeping machine side brush device is located outside the outline range of the robot body.

[0021] Compared with the prior art, the advantages of this application are:

[0022] Since the side brush assembly comprises a rotating and telescopic side brush arm with a first end disposed in the winding assembly cavity of the side brush holder and a second end extending from an opening of the side brush holder, and a telescopic control assembly disposed outside the rotating shaft, which can fix or release the first end of the rotating and telescopic side brush arm from the side brush holder and adjust the length of the rotating and telescopic side brush arm extending from the side brush holder when the side brush holder rotates, the side brush cleaning area can be increased by extending the length of the rotating and telescopic side brush arm extending from the side brush holder during edge cleaning, ensuring that right-angled corners can be cleaned; while the side brush cleaning area can be reduced by shortening the length of the rotating and telescopic side brush arm extending from the side brush holder during I-shaped cleaning. This gives the side brush assembly the advantages of adjustable side brush cleaning area and good cleaning effect at right-angled corners. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0024] Figure 1 This is a schematic structural diagram of a side brush device of a sweeper according to an embodiment of the present utility model;

[0025] Figure 2 This is a bottom view of the side brush device of the sweeper according to an embodiment of the utility model;

[0026] Figure 3 This is a bottom perspective view of the side brush device of a sweeper according to an embodiment of the present utility model;

[0027] Figure 4 This is a partial structural exploded diagram of the side brush device of a sweeper according to an embodiment of the utility model;

[0028] Figure 5 This is a side structural schematic diagram of the side brush holder according to an embodiment of the present utility model;

[0029] Figure 6 This is a schematic top view of the structure of the rotating and telescopic side brush arm according to an embodiment of the utility model;

[0030] Figure 7This is a bottom view of the partial structure of the side brush device of the sweeper according to an embodiment of the present utility model.

[0031] Description of Reference Numerals

[0032] 100-Sweeper side brush device;

[0033] 1-rotating shaft;

[0034] 2-side brush seat; a-winding assembly cavity; b-opening; 21-side brush base; 211-connecting shaft; c-plug slot; 22-side brush cover; o-through hole; 221-positioning column;

[0035] 3-rotatable and retractable side brush arm; 31-first end; 311-annular boss; 32-second end; d-bending notch;

[0036] 4- telescopic control assembly; 41- electromagnet; 42- iron ring; 43- permanent magnet;

[0037] 5-fixed length brush arm; e-slot;

[0038] 6- toothbrush box assembly; 61- toothbrush box housing; 611- toothbrush box lower cover; 612- toothbrush box upper cover; 62- drive motor; 63- transmission gear;

[0039] 7- Brush bristles. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] It should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "top," "bottom," "inner," "outer," "back," "side," and "circumferential" used in the present invention to indicate positions or positional relationships are based on the positions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific position, be constructed, or operate in a specific position. Therefore, they should not be construed as limiting the present invention. In addition, terms such as "first" and "second" are used only to distinguish between multiple components or structures having the same or similar structures and do not represent any special limitation on the arrangement order or connection relationship.

[0042] Please refer to Figures 1 to 7The present invention provides a side brush assembly 100 for a floor sweeper, which is mounted on a chassis (not shown) of a floor sweeper robot (not shown) to remove dust, debris, and other debris from the floor. The side brush assembly 100 comprises a rotating shaft 1, a side brush holder 2, a rotating and retractable side brush arm 3, and a retractable control assembly 4.

[0043] Among them, the rotating shaft 1 is connected to the driving member in a transmission manner to receive the torque of the driving member. The side brush holder 2 is fixedly connected to the rotating shaft 1 so as to rotate around the rotating shaft 1 under the drive of the rotating shaft 1. The side brush holder 2 has a winding assembly chamber a inside, and the side of the side brush holder 2 has an opening b connecting the winding assembly chamber a with the outside. The rotating telescopic side brush arm 3 has a first end 31 and a second end 32, the first end 31 is arranged in the winding assembly chamber a, and the second end 32 extends from the opening b. The telescopic control component 4 is arranged on the outside of the rotating shaft 1, which can fix or loosen the first end 31 of the rotating telescopic side brush arm 3 and the side brush holder 2. That is, the telescopic control component 4 can control the first end 31 of the rotating telescopic side brush arm 3 and the side brush holder 2 to be in a first state of fixed connection, or in a second state of loosening.

[0044] When the side brush holder 2 is loosened, the side brush holder 2 rotates to adjust the length of the rotating telescopic side brush arm 3 extending out of the side brush holder 2. When the first end 31 of the rotating telescopic side brush arm 3 is in the second state of separation and loosening from the side brush holder 2, please refer to Figure 3 Taking the counterclockwise rotation of the side brush holder 2 as an example, since the first end 31 of the rotating telescopic side brush arm 3 is stationary and the side brush holder 2 is rotating, there is a speed difference between the two. Therefore, the side brush holder 2 can retract the rotating telescopic side brush arm 3 into the retracting assembly cavity a, thereby reducing the length of the rotating telescopic side brush arm 3 extending out of the opening b. Please refer to Figure 2 Similarly, when the rotating telescopic side brush arm 3 is rolled up, if the side brush holder 2 rotates clockwise, the rotating telescopic side brush arm 3 rolled up in the rolling assembly cavity a can be thrown out and extended from the opening b of the side brush holder 2, thereby increasing the length of the rotating telescopic side brush arm 3 extending out of the opening b.

[0045] When fixed, the rotatable and telescopic side brush arm 3 and the side brush holder 2 can rotate synchronously. When the first end 31 of the rotatable and telescopic side brush arm 3 is in a first state of fixed connection with the side brush holder 2, the length of the rotatable and telescopic side brush arm 3 extending out of the opening b remains unchanged because the side brush holder 2 and the rotatable and telescopic side brush arm 3 rotate at the same speed.

[0046] Since the side brush assembly comprises a rotating and telescopic side brush arm 3 with a first end 31 disposed in the winding assembly cavity a of the side brush holder 2 and a second end 32 extending from the opening b of the side brush holder 2, and a telescopic control assembly 4 disposed outside the rotating shaft 1, which can fix or release the first end 31 of the rotating and telescopic side brush arm 3 from the side brush holder 2 and adjust the length of the rotating and telescopic side brush arm 3 extending from the side brush holder 2 when the side brush holder 2 rotates, the side brush cleaning area can be increased by extending the length of the rotating and telescopic side brush arm 3 extending from the side brush holder 2 during edge cleaning, ensuring that right-angled corners can be cleaned; and the side brush cleaning area can be reduced by shortening the length of the rotating and telescopic side brush arm 3 extending from the side brush holder 2 during I-shaped cleaning. This gives the side brush assembly the advantages of adjustable side brush cleaning area and good cleaning effect at right-angled corners.

[0047] In order to realize the control of the connection state between the first end 31 of the rotating telescopic side brush arm 3 and the side brush holder 2 by the telescopic control component 4, optionally, please refer to Figure 4 In this embodiment, the telescopic control assembly 4 includes an electromagnet 41, an armature and a permanent magnet 43. The electromagnet 41 is concentrically arranged on the outside of the rotating shaft 1 and on the upper side of the side brush holder 2. The armature and the first end 31 of the rotating telescopic side brush arm 3 are fixedly matched and can drive the first end 31 to be adsorbed on the electromagnet 41. That is, when the electromagnet 41 is energized to generate a magnetic field, the fixed armature and the first end 31 of the rotating telescopic side brush arm 3 can be adsorbed. That is, when the electromagnet is energized, the first end 31 of the rotating telescopic side brush arm 3 is released from the side brush holder 2. The permanent magnet 43 is fixed in the winding assembly cavity a of the side brush holder 2 and is located on the lower side of the first end 31. When the electromagnet 41 is de-energized, the rotating telescopic side brush arm 3 and the armature are adsorbed and fixed in the side brush holder 2 by the permanent magnet 43. It can be understood that after the electromagnet 41 absorbs the first end 31 of the rotating telescopic side brush arm 3, after the side brush seat 2 is rotated to adjust the length of the rotating telescopic side brush arm 3 extending out of the side brush seat 2, the electromagnet 41 is powered off, and the first end 31 of the rotating telescopic side brush arm 3 is absorbed and fixed by the permanent magnet, so that the length of the rotating telescopic side brush arm 3 extending out of the side brush seat 2 can be maintained at the adjusted length.

[0048] Alternatively, see Figure 4 and Figure 5In this embodiment, the side brush seat 2 includes a side brush base 21 and a side brush cover 22. The side brush seat 2 is bowl-shaped. The outer periphery of the side brush seat 2 is provided with a fixed-length brush arm 5 extending outward. The center of the side brush seat 2 has a connecting shaft 211 fixedly connected to the rotating shaft 1. Specifically, the connecting shaft 211 has a plug-in slot c, the rotating shaft 1 is inserted into the plug-in slot c, and is fixed by fasteners. The side brush cover 22 is covered on the bowl mouth of the side brush base 21, and the side brush cover 22 and the side brush base 21 cover the inside to form the above-mentioned winding assembly chamber a. The center of the side brush cover 22 has a through hole o to facilitate the passage of the rotating shaft 1, the connecting shaft 211, the armature, and the first end 31 of the rotating and telescopic side brush arm 3. The side brush base 21 and the side brush cover 22 cover to form the above-mentioned opening b.

[0049] In order to prevent the rotating telescopic side brush arm 3 from shrinking too much when adjusting the length of the extended side brush holder 2, a mechanical positioning structure is designed to ensure the shrinkage length. Figure 7 In this embodiment, a positioning column 221 is provided at the bottom of the side brush cover 22 , and the positioning column 221 is used to limit and fix the first end 31 of the rotating telescopic side brush arm 3 between the rotating telescopic side brush arm 3 and the side brush seat 2 .

[0050] Alternatively, see Figure 4 and Figure 6 In this embodiment, the first end 31 of the rotating and telescopic side brush arm 3 has an annular boss 311 that is sleeved onto the connecting shaft 211. The armature is an iron ring 42 that sleeves and is fixedly attached to the outer periphery of the annular boss 311 of the first end 31. Thus, when the electromagnet is energized, the armature drives the first end 31 of the rotating and telescopic side brush arm 3 upward and is attracted and fixed to the electromagnet.

[0051] In order to make the process of extending or retracting the rotating side brush arm into the winding assembly cavity a of the side brush holder 2 smoother, optionally, please refer to Figure 5 In this embodiment, the opening b extends along the circumference of the side brush holder 2, and the height of the opening b gradually increases from one end to the other. That is, when the first end 31 of the rotating side brush arm rises or falls along the connecting shaft 211, the rotating side brush arm retracts or extends simultaneously.

[0052] Alternatively, see Figure 2 and Figure 3In this embodiment, the fixed-length brush arm 5 and the rotating telescopic side brush arm 3 both extend outward along the involute of the side brush base 21. This ensures that when the side brush base 2 rotates along the involute, it encounters less resistance. Of course, in other embodiments, the fixed-length brush arm 5 and the rotating telescopic side brush arm 3 may also extend radially along the side brush base 21, which is not specifically limited here. Optionally, the sweeper side brush device 100 has two fixed-length brush arms 5 and one rotating telescopic side brush arm 3. The two fixed-length brush arms 5 and the rotating telescopic side brush arm 3 are equally spaced around the periphery of the side brush base 2. Of course, in other embodiments, the number of fixed-length brush arms 5 and rotating telescopic side brush arms 3 is not limited to this, and may be only a plurality of rotating telescopic side brush arms 3, or a combination of a plurality of fixed-length brush arms 5 and a plurality of rotating telescopic side brush arms 3, which is not specifically limited here.

[0053] Alternatively, see Figure 2 and Figure 3 In this embodiment, the free ends of the fixed-length brush arm 5 and the rotating and telescopic side brush arm 3 have slots e for securing the bristles 7. That is, the bristles 7 are detachably secured to the slots e of the fixed-length brush arm 5 and the rotating and telescopic side brush arm 3. This allows the bristles 7 to be removed if damaged, eliminating the need to replace the entire brush strip.

[0054] In order to make the rotating telescopic side brush arm 3 retractable in the retracting assembly cavity a of the side brush holder 2, optionally, please refer to Figure 6 In this embodiment, the rotating and telescopic side brush arm 3 is a brush strip arm made of a flexible material, for example, made of a soft rubber material. To facilitate the retraction of the rotating and telescopic side brush arm 3 into the retraction assembly chamber a, the side wall of the rotating and telescopic side brush arm 3 near the first end 31 optionally has equally spaced bending notches d. These bending notches d cause the rotating and telescopic side brush arm 3 to bend at these bending notches d when the side brush holder 2 rotates, allowing it to be retracted into the retraction assembly chamber a. That is, because the rotating and telescopic side brush arm 3 is thinner at the location of the bending notches d, it is easier to bend there, making it easier for the rotating and telescopic side brush arm 3 to be rotated and accommodated in the retraction assembly chamber a of the side brush holder 2.

[0055] In order to provide torque to the shaft 1 and facilitate the assembly of the shaft 1 and the electromagnet 41, optionally, please refer to Figure 1 and Figure 4In this embodiment, the side brush device 100 of the sweeping machine also includes a side brush box assembly 6. The side brush device 100 of the sweeping machine can be fixedly connected to the chassis of the robot body (not shown in the figure) through the side brush box assembly 6. The side brush box assembly 6 includes a side brush box housing 61, a drive motor 62 and a transmission gear 63. The rotating shaft 1 is rotatably configured on the side brush box housing 61. The electromagnet 41 is fixed on the side brush box housing 61 and is located on the outside of the rotating shaft 1. The transmission gear 63 is configured in the side brush box housing 61. Specifically, the side brush box housing 61 includes a side brush box lower cover 611 and a side brush box upper cover 612 that cover each other. The driving member is a drive motor 62 that is fixed on the side brush box housing 61 and is transmission-connected to the rotating shaft 1 through the transmission gear 63.

[0056] Another aspect of the present invention provides a sweeping robot (not shown), comprising a robot body, the chassis of which is equipped with the sweeping robot side brush device 100 described above, wherein a portion of the sweeping robot side brush device 100's cleaning area is located outside the contour of the robot body. Since the sweeping robot has all the structures and connections of the sweeping robot side brush device 100, it has all the advantages of the sweeping robot side brush device 100, which will not be described in detail here.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A side brush device for a sweeping machine, characterized in that: include: A rotating shaft (1) is connected to the driving member in a transmission manner; The side brush seat (2) is fixedly connected to the rotating shaft (1); it has a winding assembly cavity (a) inside and an opening (b) on the peripheral side that connects the winding assembly cavity (a) with the outside; A rotating telescopic side brush arm (3) having a first end (31) disposed in the reel assembly cavity (a) and a second end (32) extending from the opening (b); a telescopic control assembly (4) disposed outside the rotating shaft (1) and capable of fixing or releasing the first end (31) of the rotating telescopic side brush arm (3) from the side brush seat (2); When loosened, the side brush seat (2) rotates to adjust the length of the rotating telescopic side brush arm (3) extending out of the side brush seat (2); when fixed, the rotating telescopic side brush arm (3) and the side brush seat (2) rotate synchronously.

2. The side brush device of a sweeper according to claim 1, characterized in that: The telescopic control assembly (4) includes an electromagnet (41) concentrically arranged on the outside of the rotating shaft (1) and located on the upper side of the side brush seat (2), an armature member fixed to the first end (31) and capable of driving the first end (31) to be adsorbed on the electromagnet (41), and a permanent magnet (43) fixed in the winding assembly cavity (a) of the side brush seat (2) and located on the lower side of the first end (31).

3. The side brush device of a sweeper according to claim 2, characterized in that: The side brush seat (2) comprises a side brush base (21) and a side brush cover (22); the side brush seat (2) is bowl-shaped, and a fixed-length brush arm (5) extending outward is provided on its periphery; the center of the side brush seat (2) has a connecting shaft (211) fixedly connected to the rotating shaft (1); the side brush cover (22) is covered on the bowl mouth of the side brush base (21) and has a through hole (o) at the center; the side brush base (21) and the side brush cover (22) cover each other to form the opening (b).

4. The side brush device of a sweeper according to claim 3, characterized in that: The first end (31) has an annular boss (311), and the annular boss (311) is sleeved on the connecting shaft (211); the armature is an iron ring (42) sleeved and fixedly connected to the outer periphery of the annular boss (311) of the first end (31).

5. The side brush device of a sweeper according to claim 3, characterized in that: The opening (b) extends along the circumference of the side brush holder (2), and its height gradually increases from one end to the other end.

6. The side brush device of a sweeper according to claim 3, characterized in that: The fixed-length brush arm (5) and the rotating telescopic side brush arm (3) both extend outward along the involute of the side brush base (21).

7. The side brush device of a sweeper according to claim 6, characterized in that: The free ends of the fixed-length brush arm (5) and the rotating telescopic side brush arm (3) are provided with slots (e) for fixing the bristles (7).

8. The side brush device of a sweeper according to claim 1, characterized in that: The rotating telescopic side brush arm (3) is a brush strip arm made of a flexible material, and a side wall of one end thereof close to the first end (31) has bending notches (d) arranged at equal intervals. When the side brush holder (2) rotates, the rotating telescopic side brush arm (3) is bent at the bending notch (d) to be rolled up in the rolling assembly cavity (a).

9. The side brush device of a sweeper as described in any one of claims 2 to 7 further includes a side brush box assembly (6); the side brush box assembly (6) includes a side brush box housing (61), a drive motor (62) and a transmission gear (63); the rotating shaft (1) is rotatably configured on the side brush box housing (61); the electromagnet (41) is fixed on the side brush box housing (61); the transmission gear (63) is configured in the side brush box housing (61); the driving member is a drive motor (62) fixed on the side brush box housing (61) and connected to the rotating shaft (1) through the transmission gear (63).

10. A sweeping robot, characterized in that: It comprises a robot body, the chassis of which is provided with a side brush device for a sweeping machine as described in any one of claims 1 to 9, and a part of the cleaning area of the side brush device for the sweeping machine is located outside the contour range of the robot body.

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