Cleaner and surface cleaning equipment

Abstract

The utility model provides a cleaner. The cleaner comprises a base body, a brush arm, a cleaning brush, a power component and a rocker assembly. The brush arm keeps a pivoting relationship with the base body through the pivoting shaft; the cleaning brush is supported by the brush arm so that the cleaning brush can rotate automatically; the power part is connected with the base body and the brush arm and used for providing pivoting force between the base body and the brush arm; the rocker assembly is arranged on the brush arm, and the rocker assembly is controlled so that the rocker assembly can periodically release or overcome the pivoting force to change the relative position of the brush arm and the base body. The utility model further provides surface cleaning equipment.

Description

Technical Field

[0001] The present disclosure relates to a cleaner and a surface cleaning device. Background Art

[0002] What is provided in this part is only background information related to the present disclosure, and it is not necessarily prior art.

[0003] Household vacuum cleaning devices are used to clean rooms by sucking up particles such as dust from the floors of the rooms.

[0004] Household vacuum cleaning devices in the prior art may include a rotary brush, and the rotary brush stirs debris on the ground surface and collects the debris from the ground surface. For example, in an example of an autonomous mobile cleaning device, the rotary brush may direct the debris towards the vacuum airflow generated by the cleaning device, and the vacuum airflow may direct the debris into the dustbin of the cleaning device.

[0005] In order to increase the cleaning area, the autonomous mobile cleaning device further includes a side brush assembly that can automatically expand and contract. For example, Chinese Utility Model Patent CN205018981U discloses a floor sweeping robot, which includes a side sweep. The side sweep includes a side arm and a brush. The first end of the side arm is connected to the bottom of the floor sweeping robot, and a brush is installed at the second end of the side arm. The floor sweeping robot further includes an elastic device that positions the second end of the side arm outside the main body contour of the floor sweeping robot, and the second end of the side arm can move closer to the main body contour of the floor sweeping robot when subjected to an external force. Compared with the prior art, the side sweep of the present utility model has the advantages of simple structure and automatic expandability and contractibility.

[0006] However, the side arm disclosed in this utility model patent cannot actively contract, and the cleaning effect is poor during the cleaning operation. Summary of the Utility Model

[0007] To solve one of the above technical problems, the present disclosure provides a cleaner and a surface cleaning device.

[0008] According to one aspect of the present disclosure, there is provided a cleaner, comprising:

[0009] A base;

[0010] A brush arm pivotally connected to the base by a pivot shaft;

[0011] A cleaning brush supported by the brush arm such that the cleaning brush can rotate on its own;

[0012] A power component connecting the base and the brush arm for providing a pivoting force between the base and the brush arm;

[0013] A rocker assembly is provided on the brush arm, wherein the rocker assembly is controlled so that the rocker assembly can periodically release or overcome the pivoting force to change the relative position of the brush arm and the base.

[0014] According to at least one embodiment of the present disclosure, the cleaning device further includes:

[0015] A power motor is used to drive the cleaning brush to rotate; wherein the power motor is also used to provide driving force for the rocker assembly, so that the rocker assembly can periodically release or overcome the pivot force.

[0016] According to the cleaning device of at least one embodiment of the present disclosure, when the power motor rotates in the first direction, the power motor is used to drive the cleaning brush to rotate without providing driving force to the rocker assembly.

[0017] According to the cleaning device of at least one embodiment of the present disclosure, when the power motor rotates in the second direction, the power motor is used to provide driving force to the rocker assembly.

[0018] According to the cleaner of at least one embodiment of the present disclosure, the brush arm has a first position and a second position relative to the base, wherein in the first position, the brush arm is close to the base; in the second position, the brush arm is away from the base.

[0019] According to the cleaner of at least one embodiment of the present disclosure, the brush arm has a first stroke and a second stroke opposite to the first stroke. In the first stroke, the rocker assembly periodically releases the pivoting force to move the brush arm from the first position to the second position.

[0020] According to the cleaner of at least one embodiment of the present disclosure, the brush arm has a first stroke and a second stroke opposite to the first stroke, and within the second stroke, the rocker assembly periodically overcomes the pivoting force to move the brush arm from the second position to the first position.

[0021] According to a cleaner of at least one embodiment of the present disclosure, the rocker assembly includes:

[0022] an eccentric wheel driven by a power motor to be rotatable; and

[0023] A rocker component is located between the eccentric wheel and the base. Under the action of the eccentric wheel, the rocker component provides interaction to the base, and the interaction includes resisting the base or periodically releasing the resistance to the base.

[0024] According to the cleaner of at least one embodiment of the present disclosure, under the action of the eccentric wheel, the rocker member can periodically release the contact with the base body, so as to periodically release the pivoting force, so that the brush arm pivots from the first position to the second position relative to the base body within the first stroke.

[0025] According to the cleaner of at least one embodiment of the present disclosure, under the action of the eccentric wheel, the rocker member can maintain the contact with the base body, so as to periodically overcome the pivoting force, so that the brush arm pivots from the second position to the first position relative to the base body within the second stroke.

[0026] According to the cleaner of at least one embodiment of the present disclosure, the rocker member is pivotally connected to the brush arm through a fulcrum.

[0027] According to the cleaner of at least one embodiment of the present disclosure, the rocker member includes a first arm and a second arm. The first arm and the second arm are respectively located on both sides of the fulcrum. The first arm is used to interact with the eccentric wheel, and the second arm is used to interact with the base body.

[0028] According to the cleaner of at least one embodiment of the present disclosure, within the first stroke, based on the driving force provided by the power motor, the distance between the rotation axis of the eccentric wheel and the first arm decreases, so as to release the contact of the second arm with the base body and release the pivoting force.

[0029] According to the cleaner of at least one embodiment of the present disclosure, within the second stroke, based on the driving force provided by the power motor, the distance between the rotation axis of the eccentric wheel and the first arm increases, and the second arm remains in contact with the base body, so as to transmit the force to overcome the pivoting force to the base body through the lever action.

[0030] According to the cleaner of at least one embodiment of the present disclosure, the rocker member forms an avoidance portion for avoiding the eccentric wheel. Within the first stroke and the second stroke, the avoidance portion provides a rotation avoidance space for the eccentric wheel.

[0031] According to the cleaner of at least one embodiment of the present disclosure, the avoidance portion is disposed near the fulcrum and is formed between the first arm and the second arm.

[0032] According to the cleaner of at least one embodiment of the present disclosure, the avoidance portion has an inner diameter, and the inner diameter is not less than the outer diameter of the eccentric wheel.

[0033] According to the cleaner of at least one embodiment of the present disclosure, the first arm includes a straight portion, and the straight portion is tangent to the avoidance portion, so that the contact point between the eccentric wheel and the first arm smoothly transitions from the straight portion to the avoidance portion.

[0034] According to the cleaner of at least one embodiment of the present disclosure, the second arm includes a bending portion, and the bending portion is tangent to the avoiding portion so that the contact point between the eccentric wheel and the second arm smoothly transitions from the bending portion to the avoiding portion.

[0035] According to the cleaner of at least one embodiment of the present disclosure, a set of rotatable gears is provided between the eccentric wheel and the power motor, and the set of rotatable gears are connected to each other to perform a transmission function and transmit the driving force of the power motor to the eccentric wheel.

[0036] According to the cleaner of at least one embodiment of the present disclosure, the rotation direction of the output shaft of the power motor is the same as the rotation direction of the eccentric wheel.

[0037] According to the cleaner of at least one embodiment of the present disclosure, a set of rotatable gears is provided between the cleaning brush and the driving motor, and the set of rotatable gears are connected to each other to perform a transmission function and transmit the driving force of the driving motor to the cleaning brush.

[0038] According to the cleaner of at least one embodiment of the present disclosure, the rotation direction of the output shaft of the power motor is opposite to the rotation direction of the cleaning brush.

[0039] According to the cleaner of at least one embodiment of the present disclosure, the power component is an elastic component, and the elastic component connects the base body and the brush arm and is used to provide a pivoting force between the base body and the brush arm.

[0040] According to the cleaner of at least one embodiment of the present disclosure, one end of the elastic component is connected to or abuts against the base body, and the other end is connected to or abuts against the brush arm.

[0041] According to the cleaner of at least one embodiment of the present disclosure, a motor fixing seat is formed on the brush arm, and the motor fixing seat is used to mount the power motor.

[0042] According to the cleaner of at least one embodiment of the present disclosure, it further includes:

[0043] A sensor, and the sensor is used to detect the relative position between the brush arm and the base body.

[0044] According to another aspect of the present disclosure, a surface cleaning device is provided, which includes the above-mentioned cleaner.

[0045] According to the surface cleaning device of at least one embodiment of the present disclosure, it further includes:

[0046] A housing assembly, and the base body is fixed to the housing assembly; or, the base body and the housing assembly are integrally formed. Description of the Drawings

[0047] The accompanying drawings illustrate exemplary embodiments of the present disclosure and, together with the description thereof, are used to explain the principles of the present disclosure. These accompanying drawings are included to provide a further understanding of the present disclosure and are incorporated in this specification and form a part of this specification.

[0048] Figure 1 It is a schematic structural view of a surface cleaning device according to an embodiment of the present disclosure.

[0049] Figure 2 It is a schematic structural view of the surface cleaning device from another angle according to an embodiment of the present disclosure.

[0050] Figure 3 It is a schematic structural view of a cleaner of the surface cleaning device according to an embodiment of the present disclosure.

[0051] Figure 4 It is a schematic structural view of the cleaner of the surface cleaning device (in the retracted state) according to an embodiment of the present disclosure.

[0052] Figure 5 It is a partial schematic structural view of the cleaner of the surface cleaning device (in the retracted state) according to an embodiment of the present disclosure.

[0053] Figure 6 It is a schematic view of the connection relationship of gears of the surface cleaning device according to an embodiment of the present disclosure.

[0054] Figure 7 It is a schematic structural view of the cleaner of the surface cleaning device (in the expanded state) according to an embodiment of the present disclosure.

[0055] Figure 8 It is a partial schematic structural view of the cleaner of the surface cleaning device (in the expanded state) according to an embodiment of the present disclosure.

[0056] Figure 9 It is a schematic structural view of an eccentric wheel according to an embodiment of the present disclosure.

[0057] Figure 10 It is a schematic structural view of a rocker member according to an embodiment of the present disclosure.

[0058] The specific reference numerals in the drawings are as follows:

[0059] 100 housing assembly

[0060] 200 cleaner

[0061] 201 driving gear

[0062] 202 first coaxial gear

[0063] 203 Idler gear

[0064] 204 Second coaxial gear

[0065] 205 Driven gear

[0066] 206 One-way bearing

[0067] 207 Rotating shaft part

[0068] 210 Substrate

[0069] 211 Stop part

[0070] 220 Brush arm

[0071] 221 Base part

[0072] 222 Cover part

[0073] 223 Protruding part

[0074] 224 Boss part

[0075] 230 Cleaning brush

[0076] 240 Power component

[0077] 250 Rocker assembly

[0078] 251 Eccentric wheel

[0079] 251A Limiting plane

[0080] 252 Rocker part

[0081] 252A First arm

[0082] 252B Second arm

[0083] 252C Fulcrum

[0084] 252D Avoidance part

[0085] 260 Power motor

[0086] 270 Pivot shaft

[0087] 300 Cleaning assembly

[0088] 400 Steering wheel

[0089] 500 Driving wheel

[0090] 600 Cleaning part. Detailed implementation mode

[0091] The present disclosure will be further described in detail below in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the relevant content and do not limit the present disclosure. Additionally, it should be noted that for ease of description, only parts related to the present disclosure are shown in the drawings.

[0092] It should be noted that, without conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other. The technical solutions of the present disclosure will be described in detail below with reference to the drawings and embodiments.

[0093] Unless otherwise specified, the exemplary embodiments / examples shown are understood to provide exemplary features of various details of some ways in which the technical concept of the present disclosure can be implemented in practice. Therefore, unless otherwise specified, without departing from the technical concept of the present disclosure, the features of various embodiments / examples can be additionally combined, separated, interchanged, and / or rearranged.

[0094] In the drawings, cross - hatching and / or shading are generally used to make the boundaries between adjacent components clear. Thus, unless stated otherwise, the presence or absence of cross - hatching or shading does not convey or imply any preference or requirement for the specific material, material properties, dimensions, proportions, commonality between the components shown, and / or any other characteristics, attributes, properties, etc. of the components. In addition, in the drawings, for clarity and / or descriptive purposes, the dimensions and relative dimensions of components may be exaggerated. When the exemplary embodiments can be implemented differently, the specific process sequences can be performed in an order different from that described. For example, two consecutively described processes can be performed substantially simultaneously or in an order opposite to that described. Additionally, the same reference numerals denote the same components.

[0095] When a component is referred to as being "on" or "above" another component, "connected to" or "coupled to" another component, the component can be directly on the other component, directly connected to or directly coupled to the other component, or there can be an intermediate component. However, when the component is referred to as being "directly on" another component, "directly connected to" or "directly coupled to" another component, there is no intermediate component. For this reason, the term "connection" can refer to a physical connection, an electrical connection, etc., and can have or not have an intermediate component.

[0096] For descriptive purposes, the present disclosure may use spatial relative terms such as "under", "below", "beneath", "lower", "above", "on", "over", "upper", and "side (e.g., as in "sidewall")" to describe the relationship of one component to another (other) component as shown in the figures. In addition to the orientation depicted in the figures, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacturing. For example, if the device in the figures is flipped, a component described as "under" or "beneath" another component or feature will then be positioned "above" the other component or feature. Thus, the exemplary term "under" can encompass both "above" and "below" orientations. Additionally, the device may be otherwise positioned (e.g., rotated 90 degrees or at other orientations), and accordingly, the spatial relative descriptors used herein are to be interpreted.

[0097] The terms used herein are for the purpose of describing particular embodiments and are not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are also intended to include the plural forms. Additionally, when the terms "comprise" and / or "include" and their variations are used in this specification, it is stated that there are the stated features, integers, steps, operations, components, assemblies, and / or groups thereof, but it does not preclude the presence or addition of one or more other features, integers, steps, operations, components, assemblies, and / or groups thereof. It should also be noted that, as used herein, the terms "substantially", "about", and other similar terms are used as approximate terms and not as terms of degree, and thus they are used to account for the inherent deviations of measurements, calculations, and / or provided values that would be recognized by a person of ordinary skill in the art.

[0098] Figure 1 is a schematic structural view of a surface cleaning device according to an embodiment of the present disclosure. Figure 2 is a schematic structural view of the surface cleaning device from another angle according to an embodiment of the present disclosure.

[0099] As Figure 1 and Figure 2 shown, the surface cleaning device of the present disclosure can be a self - mobile surface cleaning device; as an example, the self - mobile surface cleaning device can be a floor - sweeping robot, a mopping robot, or a combined floor - sweeping and mopping robot, etc. Among them, the self - mobile surface cleaning device can perform autonomous cleaning operations, that is, the surface cleaning device can autonomously move on the surface to be cleaned to clean the surface to be cleaned by sucking up particles located on different parts of the surface to be cleaned.

[0100] To Figure 1 and Figure 2Taking the shown mopping and sweeping robot as an example, with the forward direction of the surface cleaning device recorded as the front, referring to Figure 2 the view direction, the forward direction of the surface cleaning device is the upper side. The direction away from the forward direction of the surface cleaning device is the rear, referring to Figure 2 the view direction, the rear of the surface cleaning device refers to the lower side. Accordingly, the direction perpendicular to the front-rear direction can be defined as the left-right direction.

[0101] The surface cleaning device may include a housing assembly 100, which can be formed as the body of the surface cleaning device; a steering wheel 400 and a driving wheel 500 are provided at the bottom of the housing assembly 100. The steering wheel 400 is used to control the traveling direction of the surface cleaning device, and the driving wheel 500 is used to drive the surface cleaning device forward. The steering wheel 400 is arranged at the front position of the housing assembly 100, and the cleaning member 600 is rotatably connected to the bottom of the housing assembly 100, then it is located at the rear position of the housing assembly 100.

[0102] As Figure 2 shown, the driving wheels 500 of the present disclosure can be set to two, and these two driving wheels 500 are respectively located at approximately the middle positions in the front-rear direction of the housing assembly 100, and on both sides in the left-right direction of the housing assembly 100; moreover, the steering wheel 400 is set to one, which can be a universal wheel. Accordingly, the universal wheel is arranged at the middle position in the left-right direction of the surface cleaning device and close to the front end of the surface cleaning device. Of course, the steering wheel 400 of the present disclosure can also be set to two or more.

[0103] During actual use, the driving wheels 500 can be driven to rotate, and by controlling the driving wheels 500 to rotate at the same speed, the surface cleaning device can move forward. Accordingly, by controlling the driving wheels 500 to rotate at different speeds, the steering of the surface cleaning device can be controlled.

[0104] In the present disclosure, a cleaner 200 is also provided on the housing assembly 100. Among them, the cleaner 200 can be set to one or two; in Figure 2 the shown implementation form, the cleaner 200 is set to one, and the cleaner 200 is arranged on the right side at the front end of the housing assembly 100; thus, by the rotation of the cleaner 200, the dirt on the surface to be cleaned can be disturbed and the cleaning of the surface to be cleaned can be realized. In the present disclosure, the cleaner 200 can also be referred to as a side brush assembly.

[0105] In addition, a cleaning component 300 is also provided on the housing component 100. The cleaning component 300 is disposed at the middle position in the front-rear direction of the housing component 100, and its length direction is the width direction of the housing component 100. More specifically, the cleaning component 300 can be a rotary brush, which is rotatably connected to the housing component 100, and the rotation axis of the rotary brush is parallel to the surface to be cleaned, such as parallel to the ground. In other embodiments of the present disclosure, the cleaning component 300 can be a structure well-known to those skilled in the art. Figure 2 The specific structure when the cleaning component is a rotary brush is shown. The rotation axis of the rotary brush is parallel to the surface to be cleaned. When the cleaning disk rotates, the surface to be cleaned can be cleaned, and details are not described herein.

[0106] Thus, through the rotating rotary brush of the cleaning component 300, the dirt on the surface to be cleaned can be disturbed. These dirt can be sucked into a device such as a dust box by means of negative pressure adsorption, and solid particles can be separated in the device such as the dust box, thereby realizing the cleaning operation on the surface to be cleaned.

[0107] In a preferred embodiment, a cleaning member 600 is further provided on the housing component 100; in the present disclosure, the cleaning member 600 is rotatably connected to the housing component 100 and is configured to clean the surface to be cleaned. Specifically, the cleaning member 600 can be a cleaning disk that rotates on the surface to be cleaned, or a roller that relatively rotates with respect to the surface to be cleaned, or other forms of cleaning members 600 can also be used.

[0108] As Figure 2 shown, the cleaning member 600 is a cleaning disk, and the cleaning disk includes a cleaning surface made of flannel; the rotation axis of the cleaning disk is perpendicular to the surface to be cleaned, that is, the cleaning disk is connected to the housing component 100 through a rotating shaft perpendicular to the surface to be cleaned. Since the cleaning disk rotates relative to the bottom wall of the housing component 100, in order to avoid interference from the bottom wall of the housing component 100 to the rotation of the cleaning disk, a certain gap needs to be formed between the cleaning disk and the bottom wall of the housing component 100. Further, the distance between the cleaning member 600 of the present disclosure and the bottom wall of the housing component 100 can be adjusted; that is to say, the rotating shaft of the present disclosure can be driven to move in the up-down direction, and correspondingly, the cleaning disk can also move in the up-down direction. Thus, by the up-down movement of the cleaning disk, the pressure of the cleaning disk on the surface to be cleaned can be adjusted.

[0109] As Figure 2As shown, two cleaning discs of the present disclosure are provided. These two cleaning discs are respectively arranged on the left and right sides at the rear end of the housing assembly 100. In one embodiment, when these two cleaning discs rotate, they can contact with pressure, so as to realize wet mopping of the surface to be cleaned, thereby realizing wet cleaning of the surface to be cleaned. Correspondingly, during the cleaning process of the surface to be cleaned, in the left-right direction, since there is no gap or the gap is small between the cleaning discs, there will be no area where cleaning is missed.

[0110] Since the cleaning assembly 300 is located in front of the cleaning member 600, the surface cleaning device of the present disclosure can use the cleaning member 600 to clean the surface to be cleaned after the cleaning assembly 300 has cleaned the surface to be cleaned.

[0111] Thus, when the surface cleaning device of the present disclosure is working, it can self-clean the cleaning member 600 of the surface cleaning device according to its working time; more preferably, this working time can be different according to the degree of dirt on the ground. For example, when the degree of dirt on the ground is large, this working time can be set to be relatively short; correspondingly, when the degree of dirt on the ground is small, this working time can be set to be relatively long.

[0112] At the same time, when the surface cleaning device completes the cleaning operation for a predetermined time, it can automatically return and dock at the base station, and the base station self-cleans the cleaning member 600 of the surface cleaning device.

[0113] Figure 3 is a schematic structural diagram of a cleaner of a surface cleaning device according to an embodiment of the present disclosure. Figure 4 is a schematic structural diagram of a cleaner of a surface cleaning device according to an embodiment of the present disclosure (retracted state). Figure 5 is a partial schematic structural diagram of a cleaner of a surface cleaning device according to an embodiment of the present disclosure (retracted state). Figure 6 is a schematic diagram of the connection relationship of gears of a surface cleaning device according to an embodiment of the present disclosure. Figure 7 is a schematic structural diagram of a cleaner of a surface cleaning device according to an embodiment of the present disclosure (expanded state). Figure 8 is a partial schematic structural diagram of a cleaner of a surface cleaning device according to an embodiment of the present disclosure (expanded state).

[0114] Such as Figure 3 to Figure 8 As shown, in the present disclosure, the cleaner 200 of the present disclosure may include components such as a base body 210, a brush arm 220, a cleaning brush 230, a power component 240, a rocker assembly 250, and a power motor 260.

[0115] Such as Figure 3As shown, the base body 210 can be disposed on the housing assembly 100. In a preferred embodiment, the base body 210 is formed separately from the housing assembly 100 and is fixed to the housing assembly 100. In another embodiment, the base body 210 can be integrally formed with the housing assembly 100, that is to say, at this time, the brush arm 220 can be directly mounted on the housing assembly 100.

[0116] As Figure 6 and Figure 8 shown, the base body 210 of the present disclosure may include a stop portion 211, and the stop portion 211 is formed as an arm portion of the base body 210; when the rocker assembly 250 interacts with the base body 210, the rocker assembly 250 cooperates with the stop portion 211 of the base body 210 and contacts it with pressure.

[0117] The brush arm 220 maintains a pivoting relationship with the base body 210 through a pivot shaft 270; in other words, the brush arm 220 of the present disclosure is rotatably connected to the base body 210, and the rotation axis of the brush arm 220 relative to the base body 210 is the center line of the pivot shaft 270. In a preferred embodiment, the center line of the pivot shaft 270 is disposed substantially vertically. Thus, when the surface cleaning device of the present disclosure is in use, the center line of the pivot shaft 270 can be disposed substantially vertically and perpendicular to the substantially horizontal surface to be cleaned.

[0118] The cleaning brush 230 is used to remove debris on the surface to be cleaned. Among them, the cleaning brush 230 is rotatably disposed on the brush arm 220. Specifically, the rotation axis of the cleaning brush 230 relative to the brush arm 220 is substantially parallel to the center line of the pivot shaft 270. That is, when the surface cleaning device is cleaning the surface to be cleaned, the rotation axis of the cleaning brush 230 is disposed substantially perpendicular to the surface to be cleaned, whereby the cleaning brush 230 has a larger cleaning area.

[0119] In the present disclosure, when the brush arm 220 rotates relative to the base body 210, it has a first position and a second position; at the first position, the brush arm 220 is close to the base body 210; at the second position, the brush arm 220 is far from the base body 210.

[0120] That is to say, in the present disclosure, the first position can also be referred to as the retracted position. At this time, the cleaning brush 230 is in a retracted state. Correspondingly, the brush arm 220 can be received inside the housing assembly 100; the second position can also be called the expanded position. At this time, the cleaning brush 230 is in an expanded state. Correspondingly, one end of the brush arm 220 far from the base body 210 can be located outside the housing assembly 100.

[0121] Thus, in the cleaner 200 of the present disclosure, by providing the pivotable brush arm 220, the cleaning area and the cleanable area can be further increased. In particular, the cleaning of positions such as slits and corners can be achieved. And by controlling the rotation of the brush arm 220, the cleaner 200 of the present disclosure can be more reliably controlled.

[0122] Specifically, whether in the retracted state or the extended state, at least a part of the cleaning brush 230 can extend beyond the outer periphery of the surface cleaning device, and the rotation direction of the cleaning brush 230 is set to be able to face the cleaning assembly 300 on the lower side of the surface cleaning device to clean the particles outside the outer periphery of the surface cleaning device. Figure 2 In the example shown, when the surface cleaning device is cleaning the surface to be cleaned, when viewed in the direction from top to bottom, the cleaning brush 230 rotates counterclockwise.

[0123] For example, the cleaning brush 230 sweeps debris towards the area in front of the surface cleaning device, or sweeps the debris into the projected cleaning path of the surface cleaning device. During the obstacle following operation, when the surface cleaning device travels along the periphery of the obstacle and the side of the surface cleaning device tracks the obstacle, the cleaning brush 230 sweeps the debris along the obstacle. The cleaning brush 230 is positioned near the front side of the surface cleaning device, and at least a part of it extends beyond the side of the surface cleaning device so that the cleaning brush 230 can access the particles located along the obstacle and at the corners defined by the obstacle.

[0124] The arrangement of the cleaning brush 230 relative to the cleaning assembly 300 and the cleaning member 600 of the surface cleaning device is Figure 2 shown (bottom view). The width of the cleaning assembly 300 and the rotational cleaning amplitude of the cleaning member 600 define the cleaning width of the surface cleaning device. During the autonomous cleaning operation, the cleaning assembly 300 is rotated to guide the particles under the surface cleaning device into the dust bin of the surface cleaning device, and the cleaning brush 230 is rotated to push the particles towards the cleaning assembly 300. The cleaning brush 230 enables the surface cleaning device to pick up the particles outside the cleaning range of the cleaning assembly 300 of the surface cleaning device, and the cleaning brush 230 sweeps the particles into the above-mentioned projected cleaning path of the cleaning width of the surface cleaning device.

[0125] The cleaning brush 230 is rotatable to clean the surface to be cleaned and push the debris towards the cleaning assembly 300. The cleaning brush 230 rotates about its own axis. In some embodiments, the cleaning brush 230 rotates about an axis that forms an angle less than 90 degrees with the surface to be cleaned.

[0126] The brush arm 220 of the present disclosure is disposed substantially horizontally. Thus, the brush arm 220 is not only used to support the rotation of the cleaning brush 230, but also used to drive the cleaning brush 230 to move in a given direction (for example, the brush arm 220 can drive the cleaning brush 230 to move in a substantially horizontal plane), so that the cleaning brush 230 can move between the retracted position and the expanded position. Correspondingly, when the cleaning brush 230 is in the expanded position, the debris removal range of the cleaning brush 230 can be increased.

[0127] In one embodiment, the brush arm 220 of the present disclosure may include a base portion 221 and a cover portion 222; correspondingly, an accommodation space is formed between the base portion 221 and the cover portion 222, and a plurality of gears are arranged in the accommodation space; that is to say, the brush arm 220 of the present disclosure can be integrally formed as a gear box.

[0128] In the present disclosure, as Figure 4 shown, the cover portion 222 is provided with a protruding portion 223, and a motor fixing seat is formed through the protruding portion 223, and a power motor 260 is installed in the motor fixing seat; in a preferred embodiment, the rotation axis of the output shaft of the power motor 260 is disposed substantially vertically.

[0129] The upper end of the protruding portion 223 extends outward to form a boss portion 224, and the upper end of the pivot shaft 270 is fixed to the boss portion 224. For example, an installation hole is formed in the boss portion 224, the pivot shaft 270 is inserted into the installation hole, and the pivot shaft 270 is in interference fit with the inner wall of the installation hole, so that the pivot shaft 270 and the boss portion 224 can be fixed together. Of course, the pivot shaft 270 of the present disclosure can also be fixed to the boss portion 224 by means of gluing or the like.

[0130] The lower end of the pivot shaft 270 can be fixed to the cover portion 222; for example, an installation hole is formed in the cover portion 222, the pivot shaft 270 is inserted into the installation hole, and the pivot shaft 270 is in interference fit with the inner wall of the installation hole, so that the pivot shaft 270 and the cover portion 222 can be fixed together. Of course, the pivot shaft 270 of the present disclosure can also be fixed to the cover portion 222 by means of gluing or the like.

[0131] Of course, both ends of the pivot shaft 270 of the present disclosure can also be rotatably disposed in the two installation holes.

[0132] At least a part of the base body 210 is rotatably disposed on the pivot shaft 270 and is located between the boss portion 224 and the cover portion 222. Thus, the brush arm 220 can stably pivot relative to the base body 210.

[0133] In the present disclosure, a power component 240 connects the base body 210 and the brush arm 220 and is configured to provide a pivoting force between the base body 210 and the brush arm 220. In a preferred embodiment, the power component 240 is an elastic component. Specifically, the elastic component may be a torsion spring. The elastic component connects the base body 210 and the brush arm 220 and is configured to provide an elastic pivoting force between the base body 210 and the brush arm 220.

[0134] Correspondingly, the pivoting force provided by the power component 240 enables the brush arm 220 to have a tendency to move relative to the base body 210 towards the second position. At this time, one end of the elastic component is connected to or abuts against the base body 210, and the other end is connected to or abuts against the brush arm 220.

[0135] That is to say, when the brush arm 220 is in a free state, the pivoting force provided by the power component 240 enables the brush arm 220 to move from the first position to the second position.

[0136] In a preferred embodiment, the cleaner (or surface cleaning device) of the present disclosure may further include a sensor configured to detect the relative position of the brush arm 220 and the base body 210. In one embodiment, the sensor may be a rotary encoder, so that the relative position of the brush arm 220 and the base body 210 can be obtained through the rotary encoder. In another embodiment, the sensor may be a travel switch. For example, a plurality of travel switches are provided, and when the brush arm 220 is in different positions, different travel switches can be triggered, so that the position of the brush arm 220 can be obtained through the position of the triggered travel switch.

[0137] The rocker assembly 250 of the present disclosure is disposed on the brush arm 220, wherein the rocker assembly 250 is controlled such that the rocker assembly 250 can periodically release or overcome the pivoting force to change the relative position of the brush arm 220 and the base body 210.

[0138] In other words, the rocker assembly 250 of the present disclosure can periodically release or overcome the pivoting force according to a driving force signal to change the relative position of the brush arm 220 and the base body 210. Wherein, the driving force signal is the output shaft steering signal of the power motor 260.

[0139] In the present disclosure, the power motor 260 is configured to drive the cleaning brush 230 to rotate; wherein, the power motor 260 is further configured to provide a driving force for the rocker assembly 250 such that the rocker assembly 250 can periodically release or overcome the pivoting force.

[0140] Specifically, as Figure 6As shown, when viewed from top to bottom, when the power motor 260 rotates in the first direction (for example, rotates clockwise), the power motor 260 is used to drive the cleaning brush 230 to rotate, without providing driving force to the rocker assembly 250. At this time, the power motor 260 drives the driving gear 201 to rotate, and the driving gear 201 drives the first coaxial gear 202; among them, the large gear of the first coaxial gear 202 meshes with and drives the driving gear 201, and moreover, the number of teeth of the first coaxial gear 202 is greater than that of the driving gear 201, so that a speed reduction transmission is formed between the driving gear 201 and the first coaxial gear 202. Among them, the first coaxial gear will rotate counterclockwise.

[0141] The small gear of the first coaxial gear 202 drives the idle gear 203 to rotate; moreover, the idle gear 203 is used to drive the second coaxial gear 204 to rotate; among them, the gear shaft of the second coaxial gear 204 is rotatably arranged on the brush arm 220 and is fixedly connected to the cleaning brush 230. Thus, when the second coaxial gear 204 rotates, the cleaning brush 230 can rotate at the same speed as the second coaxial gear 204; correspondingly, the cleaning brush 230 can also rotate counterclockwise and realize the cleaning operation on the cleaning surface.

[0142] In addition, when the power motor 260 rotates in the second direction, the power motor 260 is used to provide driving force to the rocker assembly 250.

[0143] Specifically, referring again to Figure 6 , when the power motor 260 rotates in the second direction (the second direction is the opposite direction of the first direction, that is, the counterclockwise direction); at this time, the second coaxial gear 204 will rotate clockwise; correspondingly, the large gear of the second coaxial gear 204 meshes with the idle gear; the small gear of the second coaxial gear 204 will drive the driven gear 205 to rotate. At this time, the driven gear 205 will have the same rotation direction as the power motor 260.

[0144] The driven gear 205 is connected to the rotating shaft portion 207 through a one-way bearing 206 (overrunning clutch); specifically, the rotating shaft portion 207 of the present disclosure can be rotatably arranged on the brush arm 220, and the one-way bearing 206 is arranged such that when the driven gear 205 rotates counterclockwise, it drives the rotating shaft portion 207 to rotate; when the driven gear 205 rotates clockwise, it does not drive the rotating shaft portion 207 to rotate.

[0145] Of course, those skilled in the art should know that when there are different stages of gears between the power motor 260 and the driven gear 205, the power motor 260 and the driven gear 205 can also have different rotation directions. At this time, the configuration of the one-way bearing 206 can separate and combine different rotation directions according to actual needs.

[0146] Through the above structure, the cleaner 200 of the present disclosure can realize the driving and outward extension movement of the cleaning brush 230 through different rotation directions of the same power motor 260, and keep the cleaning brush 230 able to rotate to clean the ground.

[0147] Refer to Figure 5 The brush arm 220 has a first stroke and a second stroke opposite to the first stroke. In the first stroke, the rocker assembly 250 periodically releases the pivot force so that the brush arm 220 moves from the first position to the second position; at the same time, in the second stroke, the rocker assembly 250 periodically overcomes the pivot force so that the brush arm 220 moves from the second position to the first position.

[0148] Specifically, in a direction of looking down at the cleaner 200 , the first stroke is a counterclockwise rotation process of the brush arm 220 around the pivot shaft 270 ; on the contrary, the second stroke is a clockwise rotation process of the brush arm 220 around the pivot shaft 270 .

[0149] The structure of the rocker assembly 250 will be described in detail below.

[0150] Figure 9 It is a schematic structural diagram of an eccentric wheel according to an embodiment of the present disclosure.

[0151] like Figure 5 and Figure 8 As shown, the rocker assembly 250 of the present invention includes an eccentric wheel 251 and a rocker component 252; wherein the eccentric wheel 251 can be fixed on the rotating shaft portion 207 and rotate together with the rotating shaft portion 207; in another embodiment, when the rotating shaft portion 207 is fixed to the brush arm 220, the inner ring of the one-way bearing 206 is configured to be able to rotate relative to the rotating shaft portion 207, at which time the eccentric wheel 251 is fixed to the inner ring of the one-way bearing 206 and can rotate relative to the rotating shaft portion 207.

[0152] That is to say, in the present disclosure, it is only necessary to keep the inner ring of the one-way bearing 206 and the eccentric wheel 251 fixed together and able to rotate together. Correspondingly, the outer ring of the one-way bearing 206 is fixedly connected to the driven gear 205.

[0153] Accordingly, the eccentric wheel 251 of the present invention is driven by the power motor 260 to rotate; the rocker component 252 is located between the eccentric wheel 251 and the base 210. Under the action of the eccentric wheel 251, the rocker component 252 provides interaction to the base 210, which includes resisting the base 210 or periodically releasing the resistance to the base 210.

[0154] That is, the eccentric wheel 251 of the present disclosure has a rotation axis and a geometric center, the rotation axis and the geometric center do not coincide, and the outer peripheral surface of the eccentric wheel 251 of the present disclosure has a first portion and a second portion; wherein the first portion of the outer peripheral surface is a surface with a smaller distance from the rotation axis; and the second portion of the outer peripheral surface is a surface with a larger distance from the rotation axis; Figure 9 As shown, a limited position plane 251A is formed on the second part of the outer circumferential surface of the present invention, and the limited position plane 251A is perpendicular to the plane where the rotation axis and the geometric center are located.

[0155] Figure 10 It is a schematic structural diagram of a rocker component according to an embodiment of the present disclosure.

[0156] like Figure 10 As shown, the rocker component 252 of the present disclosure includes a first arm 252A and a second arm 252B, which are respectively located on both sides of a fulcrum 252C. The first arm 252A is used to interact with the eccentric wheel 251 , and the second arm 252B is used to interact with the base 210 .

[0157] Specifically, Figure 5 The retracted state shown is the initial state, and the power motor 260 keeps rotating clockwise to drive the cleaning brush 230 to rotate counterclockwise to pick up particles on the surface to be cleaned. If the surface cleaning device detects that an obstacle is adjacent to the side of the surface cleaning device, the power motor 260 switches the output direction. At this time, the power motor 260 rotates clockwise and causes the eccentric wheel 251 to rotate clockwise. The distance between the rotation axis of the eccentric wheel 251 and the first arm 252A of the rocker component 252 will gradually decrease. Accordingly, the rocker component 252 will be allowed to rotate counterclockwise. At this time, under the action of the pivoting force, the brush arm 220 will rotate counterclockwise around the pivot shaft 270, and the stopper 211 of the base 210 will toggle the rocker component 252 to rotate counterclockwise, and cause the first arm 252A of the rocker component 252 to maintain pressure contact with the outer periphery of the eccentric wheel 251.

[0158] That is, due to the rotation of the eccentric wheel 251, the distance between the rotation axis of the eccentric wheel 251 and the first arm 252A decreases to release the interference of the second arm 252A with the base to release the pivot force. Accordingly, the brush arm 220 is in the first stroke and gradually expands outward.

[0159] The brush arm 220 is in the second position. Figure 7 and Figure 8 shown.

[0160] exist Figure 7 and Figure 8In the state shown, the driving motor 260 switches the rotation direction, that is, the driving motor 260 rotates in the clockwise direction to drive the cleaning brush 230 to rotate counterclockwise to pick up particles on the surface to be cleaned near the obstacle.

[0161] When the surface cleaning device detects that the obstacle has moved away from the side of the surface cleaning device, the driving motor 260 switches the output direction. At this time, the driving motor 260 will rotate counterclockwise, and the eccentric wheel 251 will rotate counterclockwise. The distance between the rotation axis of the eccentric wheel 251 and the first arm 252A of the rocker member 252 will gradually increase. Correspondingly, under the drive of the eccentric wheel 251, the rocker member 252 will rotate clockwise; at this time, the second arm 252B of the rocker member 252 will be in pressure contact with the stopper 211 of the base 210, and the brush arm 220 will rotate clockwise around the pivot shaft 270. Thus, the driving force provided by the rocker member 252 will overcome the pivoting force. Correspondingly, the brush arm 220 will be in the second stroke and move from the second position to the first position.

[0162] On the other hand, in Figure 5 the state where, when the driving motor 260 rotates clockwise and the brush arm 220 is in Figure 8 the state shown, if the driving motor 260 does not switch the rotation direction but continues to rotate clockwise, then the brush arm 220 will move from the second position to the first position. Therefore, after the sensor detects that the brush arm 220 is in the second position, the controller will control the driving motor 260 to reverse, so that the eccentric wheel 251 no longer continues to rotate, and the position of the rocker member 252 is fixed, and the cleaning brush 230 is in the cleaning state.

[0163] Referring again to Figure 9 , in the present disclosure, the rocker member 252 forms an avoidance portion 252D for avoiding the eccentric wheel 251. In the first stroke and the second stroke, the avoidance portion 252D provides a rotational avoidance space for the eccentric wheel 251. More specifically, the avoidance portion 252D is disposed near the fulcrum 252C and is formed between the first arm 252A and the second arm 252B. Moreover, the avoidance portion 252D has an inner diameter that is not less than the outer diameter of the eccentric wheel 251.

[0164] That is to say, due to the setting of the avoidance portion 252D, the eccentric wheel 251 will not touch the second arm 252B during the rotation process. Correspondingly, the rocker assembly 250 of the present disclosure is easier to control.

[0165] In a preferred embodiment, the first arm 252A includes a straight portion that is tangent to the avoidance portion 252D, so that the contact point between the eccentric wheel 251 and the first arm 252A smoothly transitions from the straight portion to the avoidance portion 252D.

[0166] In the present disclosure, when the brush arm 220 is in the first position, the limiting plane 251A of the eccentric wheel 251 can be in contact with the flat portion of the first arm 252A. Thus, the eccentric wheel 251 can stably hold the brush arm 220 in the first position.

[0167] Thus, in the first stroke, no contact force or a relatively small contact force is generated between the flat portion and the eccentric wheel 251, and in the second stroke, a contact force or a relatively large contact force is generated between the flat portion and the eccentric wheel 251.

[0168] On the other hand, the second arm 252B includes a bent portion, and the bent portion is tangent to the avoidance portion 252D so that the contact point between the eccentric wheel 251 and the second arm 252B smoothly transitions from the bent portion to the avoidance portion 252D.

[0169] Thus, the cleaner 200 of the present disclosure can achieve the cleaning drive and the outward-expansion and inward-retraction drive of the cleaning brush 230 through the same power motor 260; moreover, the cleaner 200 can be detachably mounted as a unit to the housing assembly 100 of the surface cleaning device; the brush arm 220 and the base body 210 can be mounted to or detached from the housing assembly 100 as a whole, which can make the maintenance of the cleaner 200 easier to perform. In addition, the brush arm 220 can move relative to the housing assembly 100 of the surface cleaning device so that the brush arm 220 can move in response to contact with an obstacle along the ground surface (on which the surface cleaning device moves) or in response to a change in the ground type. If the cleaning brush 230 is arranged on the brush arm 220, the contact between the cleaning brush 230 and an obstacle on the ground surface can also cause the brush arm 220 to move. This can effectively increase the cleaning area.

[0170] During the obstacle-following behavior, the surface cleaning device travels near the periphery of the obstacle such that the side surface is positioned adjacent to the periphery. By being positioned close to the side surface, the cleaning brush 230 is positioned to be able to contact the debris along the periphery of the obstacle during the obstacle-following behavior. For example, on the obstacle side, the brush arm 220 changes its position so that the cleaning brush 230 can approach the tracking target or the wall.

[0171] In the description of this specification, the description with reference to terms such as "one embodiment / way", "some embodiments / ways", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment / way or example are included in at least one embodiment / way or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / way or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments / ways or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments / ways or examples described in this specification and the features of different embodiments / ways or examples.

[0172] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0173] Those skilled in the art should understand that the above embodiments are only for clearly explaining the present disclosure and not for limiting the scope of the present disclosure. For those skilled in the art, other changes or variations can be made on the basis of the above disclosure, and these changes or variations are still within the scope of the present disclosure.

Claims

1. A cleaning device, characterized in that: include: matrix; a brush arm, the brush arm being in pivotal relationship with the base body via a pivot shaft; a cleaning brush supported by the brush arm so as to enable the cleaning brush to self-rotate; A power component, the power component is connected to the base and the brush arm, and is used to provide a pivoting force between the base and the brush arm; A rocker assembly is provided on the brush arm, wherein the rocker assembly is controlled so that the rocker assembly can periodically release or overcome the pivoting force to change the relative position of the brush arm and the base.

2. The cleaning device according to claim 1, characterized in that Also includes: A power motor is used to drive the cleaning brush to rotate; wherein the power motor is also used to provide driving force for the rocker assembly, so that the rocker assembly can periodically release or overcome the pivot force.

3. The cleaning device according to claim 2, characterized in that: When the power motor rotates in a first direction, the power motor is used to drive the cleaning brush to rotate without providing driving force to the rocker assembly.

4. The cleaning device according to claim 2, characterized in that: When the power motor rotates in the second direction, the power motor is used to provide driving force to the rocker assembly.

5. The cleaning device according to claim 1, characterized in that: The brush arm has a first position and a second position relative to the base. In the first position, the brush arm is close to the base; in the second position, the brush arm is far away from the base.

6. The cleaning device according to claim 5, characterized in that The brush arm has a first stroke and a second stroke opposite to the first stroke. In the first stroke, the rocker assembly periodically releases the pivoting force to move the brush arm from the first position to the second position.

7. The cleaning device according to claim 5, characterized in that The brush arm has a first stroke and a second stroke opposite to the first stroke, during which the rocker assembly periodically overcomes the pivoting force to move the brush arm from the second position to the first position.

8. The cleaning device according to claim 6 or 7, characterized in that: The rocker assembly comprises: an eccentric wheel driven by a power motor to be rotatable; and A rocker component is located between the eccentric wheel and the base. Under the action of the eccentric wheel, the rocker component provides interaction to the base, and the interaction includes resisting the base or periodically releasing the resistance to the base.

9. The cleaning device according to claim 8, characterized in that Under the action of the eccentric wheel, the rocker component can periodically release the interference with the base, thereby periodically releasing the pivoting force, so that the brush arm pivots from the first position to the second position relative to the base within the first stroke.

10. The cleaning device according to claim 8, characterized in that Under the action of the eccentric wheel, the rocker component can maintain resistance to the base, thereby periodically overcoming the pivoting force, so that the brush arm pivots from the second position to the first position relative to the base within the second stroke.

11. The cleaning device according to claim 8, characterized in that The rocker component is pivotally connected to the brush arm via a fulcrum.

12. The cleaning device according to claim 11, characterized in that The rocker component includes a first arm and a second arm, wherein the first arm and the second arm are respectively located at two sides of the fulcrum, the first arm is used to interact with the eccentric wheel, and the second arm is used to interact with the base.

13. The cleaning device according to claim 12, characterized in that In the first stroke, based on the driving force provided by the power motor, the distance between the rotation axis of the eccentric wheel and the first arm is reduced to release the interference of the second arm with the base, thereby releasing the pivoting force.

14. The cleaning device according to claim 12, characterized in that In the second stroke, based on the driving force provided by the power motor, the distance between the rotation axis of the eccentric wheel and the first arm increases, and the second arm maintains contact with the base to transmit a force to overcome the pivoting force to the base through leverage.

15. The cleaning device according to claim 12, characterized in that The rocker component forms an escape portion for escaping the eccentric wheel, and within the first stroke and the second stroke, the escape portion provides a rotation escape space for the eccentric wheel.

16. The cleaning device according to claim 15, characterized in that The avoidance portion is disposed close to the fulcrum and formed between the first arm and the second arm.

17. The cleaning device according to claim 16, characterized in that The avoidance portion has an inner diameter, and the inner diameter is not less than the outer diameter of the eccentric wheel.

18. The cleaning device according to claim 15, characterized in that The first arm includes a straight portion, and the straight portion is tangent to the avoidance portion, so that the contact point between the eccentric wheel and the first arm smoothly transitions from the straight portion to the avoidance portion.

19. The cleaning device according to claim 15, characterized in that The second arm comprises a curved portion, and the curved portion is tangent to the escape portion, so that the contact point between the eccentric wheel and the second arm smoothly transitions from the curved portion to the escape portion.

20. The cleaning device according to claim 8, characterized in that A group of rotatable gears is arranged between the eccentric wheel and the power motor, and the group of rotatable gears are connected to each other to perform a transmission function and transmit the driving force of the power motor to the eccentric wheel.

21. The cleaning device according to claim 20, characterized in that The direction of rotation of the output shaft of the power motor is the same as that of the eccentric wheel.

22. The cleaning device according to claim 2, characterized in that A group of rotatable gears is arranged between the cleaning brush and the driving motor, and the group of rotatable gears are connected to each other to perform a transmission function and transmit the driving force of the driving motor to the cleaning brush.

23. The cleaning device according to claim 22, characterized in that The rotation direction of the output shaft of the power motor is opposite to that of the cleaning brush.

24. The cleaning device according to claim 1, characterized in that The power component is an elastic component, which connects the base and the brush arm and is used to provide a pivoting force between the base and the brush arm.

25. The cleaning device according to claim 24, characterized in that One end of the elastic component is connected to or abuts against the base, and the other end is connected to or abuts against the brush arm.

26. The cleaning device according to claim 1, characterized in that A motor fixing seat is formed on the brush arm, and the motor fixing seat is used for installing a power motor.

27. The cleaning device according to claim 1, characterized in that Also includes: A sensor is used to detect the relative position of the brush arm and the base.

28. A surface cleaning device, characterized in that: A cleaning device comprising the cleaning device described in any one of claims 1-27.

29. A surface cleaning apparatus according to claim 28, characterised in that Also includes: The base is fixed to the shell assembly; or the base is integrally formed with the shell assembly.

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