阅读说明：本技术 一种用于扫地机器人的清洁组件及扫地机器人 (Cleaning assembly for floor sweeping robot and floor sweeping robot ) 是由 熊芳非 于 2020-06-01 设计创作，主要内容包括：本申请实施例提出一种用于扫地机机器人的清洁组件及扫地机器人,其中清洁组件包括：驱动组件,第一清洁单元和第二清洁单元,第一清洁单元和第二清洁单元的表面均设置有清洁件,第一清洁单元和第二清洁单元在驱动组件的驱动下进行同步对称的往复运动。清洁组件与扫地机器人可拆卸式连接。本申请实施例提供的清洁组件在驱动组件的驱动下进行同步对称的往复运动,可清理顽固污渍,减少扫地机器人的晃动。清洁组件与扫地机器人可拆卸式连接,便于维修和更换,延长扫地机器人的使用寿命。(The embodiment of the application provides a clean subassembly and robot of sweeping floor for sweeping floor machine robot, wherein clean subassembly includes: the cleaning device comprises a driving assembly, a first cleaning unit and a second cleaning unit, cleaning pieces are arranged on the surfaces of the first cleaning unit and the second cleaning unit, and the first cleaning unit and the second cleaning unit are driven by the driving assembly to synchronously and symmetrically reciprocate. The cleaning component is detachably connected with the sweeping robot. The cleaning assembly provided by the embodiment of the application carries out synchronous and symmetrical reciprocating motion under the driving of the driving assembly, stubborn stains can be cleared, and the shaking of the sweeping robot is reduced. Cleaning assembly and the detachable connection of robot of sweeping the floor, be convenient for maintenance and change, the life of robot of sweeping the floor is prolonged.)

1. The cleaning assembly for the sweeping robot is characterized by comprising a driving assembly, a first cleaning unit and a second cleaning unit, wherein cleaning pieces are arranged on the surfaces of the first cleaning unit and the second cleaning unit, and the first cleaning unit and the second cleaning unit are driven by the driving assembly to synchronously and symmetrically reciprocate.

2. The cleaning assembly of claim 1, wherein the first cleaning unit comprises a first connecting rod and a first carriage fixed on the first connecting rod, the second cleaning unit comprises a second connecting rod and a second carriage fixed on the second connecting rod, the cleaning member is respectively arranged on the surfaces of the first carriage and the second carriage, and the first connecting rod and the second connecting rod perform synchronous and symmetrical reciprocating motion under the driving of the driving assembly.

3. The cleaning assembly of claim 2, wherein the first link moves in a length direction of the first link and the second link moves in a length direction of the second link.

4. The cleaning assembly of claim 2, wherein the drive assembly comprises:

a motor;

an elliptical cam mounted on a rotational output shaft of the motor;

two elastic elements connected between adjacent ends of the first and second links to form a movable cavity between the two elastic elements, the ends of the first and second links;

wherein, in the process of rotating the elliptical cam in the movable cavity, the outer edge of the elliptical cam is in sliding contact with the end parts of the first connecting rod and the second connecting rod.

5. The cleaning assembly of claim 4, wherein the minor and major axes of the elliptical cam differ by 6-15 mm;

the first connecting rod and the second connecting rod are both set to be in a shape that the middle is narrow and the two ends are wide.

6. The cleaning assembly of claim 4, further comprising a water tank having a bottom with a chute and a cavity for receiving the motor, wherein the first and second links are disposed within the chute.

7. The cleaning assembly of claim 6 wherein said receiving cavity is located on one side of said tank, said first link having a length greater than a length of said second link.

8. A sweeping robot is characterized by comprising:

the cleaning assembly of any one of claims 1 to 7;

clean subassembly with the robot detachable connection of sweeping the floor.

9. The sweeping robot of claim 8, further comprising a universal wheel, two side brushes, a rolling brush, and two driving wheels, wherein the two side brushes, the rolling brush and the two driving wheels are respectively disposed on the left side and the right side; the universal wheel and the two side brushes are arranged at the front end of the sweeping robot; the two driving wheels and the rolling brush are arranged in the middle of the sweeping robot; the cleaning assembly is arranged at the rear end of the sweeping robot.

10. The sweeping robot of claim 9, wherein the direction of movement of the first and second cleaning units of the cleaning assembly is perpendicular to the direction of travel of the sweeping robot.

Technical Field

The application relates to the technical field of household appliances, in particular to a cleaning assembly for a floor sweeping robot and the floor sweeping robot.

Background

Along with the development of intelligent cleaning technology, the sweeping robot walks into more and more families, and the labor of cleaning houses by people is greatly reduced. The sweeping robot not only can sweep the ground, but also can wipe the ground in a reciprocating way through the cleaning piece after sweeping so as to clean stains on the ground.

The sweeping robot in the current market usually installs a cleaning assembly with a function of cleaning floor stains on the whole machine, the reciprocating motion of the cleaning assembly easily enables the sweeping robot to shake, and the service life of the sweeping robot is affected by the need of maintaining or replacing the whole machine under the condition that the cleaning assembly is damaged.

Disclosure of Invention

The embodiment of the application provides a clean subassembly and robot of sweeping floor for sweeping floor robot to solve the problem that correlation technique exists, technical scheme is as follows:

in a first aspect, an embodiment of the application provides a cleaning assembly for a sweeping robot, which comprises a driving assembly, a first cleaning unit and a second cleaning unit, wherein cleaning pieces are arranged on the surfaces of the first cleaning unit and the second cleaning unit, and the first cleaning unit and the second cleaning unit are driven by the driving assembly to synchronously and symmetrically reciprocate.

In one embodiment, the first cleaning unit comprises a first connecting rod and a first carriage fixed on the first connecting rod, the second cleaning unit comprises a second connecting rod and a second carriage fixed on the second connecting rod, the cleaning members are respectively arranged on the surfaces of the first carriage and the second carriage, and the first connecting rod and the second connecting rod perform synchronous and symmetrical reciprocating motion under the driving of the driving assembly.

In one embodiment, the first link moves in a length direction of the first link, and the second link moves in a length direction of the second link.

In one embodiment, a drive assembly comprises:

a motor;

the elliptical cam is arranged on a rotating output shaft of the motor;

the two elastic elements are connected between the adjacent end parts of the first connecting rod and the second connecting rod so as to form a movable cavity between the two elastic elements and the end parts of the first connecting rod and the second connecting rod;

and in the process that the elliptical cam rotates in the movable cavity, the outer edge of the elliptical cam is in sliding contact with the end parts of the first connecting rod and the second connecting rod.

In one embodiment, the minor and major axes of the elliptical cam differ by 6-15 mm;

the first connecting rod and the second connecting rod are both set to be in a shape with a narrow middle and wide ends.

In an embodiment, still include the water tank, the bottom of water tank is equipped with the spout and holds the chamber that holds the motor, and first connecting rod and second connecting rod set up in the spout.

In one embodiment, the receiving chamber is located on one side of the water tank, and the length of the first link is greater than the length of the second link.

In another aspect of the embodiments of the present application, there is provided a sweeping robot, including:

the cleaning assembly of any of the embodiments of the aspects above;

the cleaning component is detachably connected with the sweeping robot.

In one embodiment, the sweeping robot further comprises a universal wheel, two side brushes and a rolling brush which are respectively arranged on the left side and the right side, and two driving wheels which are respectively arranged on the left side and the right side; the universal wheel and the two side brushes are arranged at the front end of the sweeping robot; the two driving wheels and the rolling brush are arranged in the middle of the sweeping robot; the cleaning component is arranged at the rear end of the sweeping robot.

In one embodiment, the first and second cleaning units of the cleaning assembly are moved in a direction perpendicular to the direction of travel of the sweeping robot.

The advantages or beneficial effects in the above technical solution at least include:

the cleaning assembly provided by the embodiment of the application carries out synchronous and symmetrical reciprocating motion under the driving of the driving assembly, stubborn stains can be cleared, and the shaking of the sweeping robot is reduced. Cleaning assembly and the detachable connection of robot of sweeping the floor, be convenient for maintenance and change, the life of robot of sweeping the floor is prolonged.

The foregoing summary is provided for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present application will be readily apparent by reference to the drawings and following detailed description.

Drawings

In the drawings, like reference numerals refer to the same or similar parts or elements throughout the several views unless otherwise specified. The figures are not necessarily to scale. It is appreciated that these drawings depict only some embodiments in accordance with the disclosure and are therefore not to be considered limiting of its scope.

Fig. 1 is an exploded schematic view of a cleaning assembly of a sweeping robot according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a sweeping robot according to an embodiment of the present application.

Description of reference numerals:

151: a drive assembly;

1511: a motor; 1512: an elliptical cam; 1513: an elastic element;

152: a first cleaning unit;

1521: a first link; 1522 a first carriage; 1523: a cleaning member;

153: a second cleaning unit;

1531: a second link; 1532: a second carriage; 1533: a cleaning member;

154: a water tank;

100: a sweeping robot;

110: a universal wheel;

120: brushing edges;

130: a drive wheel;

140: rolling and brushing;

150: the assembly is cleaned.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present application. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

Fig. 1 shows an exploded view of a cleaning assembly for a sweeping robot according to an embodiment of the present application. As shown in fig. 1, the cleaning assembly may include: a driving assembly 151, a first cleaning unit 152, and a second cleaning unit 153. The surfaces of the first cleaning unit 152 and the second cleaning unit 153 are provided with cleaning members 1523, 1533, and the first cleaning unit 152 and the second cleaning unit 153 perform synchronous and symmetrical reciprocating motion under the driving of the driving assembly 151.

In this application embodiment, set up clean subassembly on sweeping the floor the robot for the in-process that the robot that sweeps the floor cleaned ground, cleaning member 1523, 1533 on the clean subassembly can be wiped ground to reciprocating wiping, in order to wash ground spot, improve the clean effect of the robot that sweeps the floor. The cleaning members 1523 and 1533 are disposed on the surfaces of the first cleaning unit 152 and the second cleaning unit 153, and the driving assembly 151 drives the first cleaning unit 152 and the second cleaning unit 153 to perform synchronous and symmetrical reciprocating motion, so as to implement the function of wiping the floor by the cleaning members 1523 and 1533. The cleaning members 1523 and 1533 in the present embodiment may be any article having a wiping function, such as: the embodiment of the present application does not limit the present invention.

In the embodiment of the application, the first cleaning unit 152 and the second cleaning unit 153 synchronously and symmetrically reciprocate to realize the reciprocating wiping of the cleaning pieces 1523 and 1533. The synchronous and symmetrical reciprocating motion means that the first cleaning unit 152 and the second cleaning unit 153 synchronously perform back-to-back and opposite reciprocating motions in the same axial direction, and the reverse force generated when the other cleaning unit moves can be eliminated, so that the shaking of the sweeping robot in the reciprocating motion process is reduced and avoided.

In one embodiment, the first cleaning unit 152 includes a first link 1521 and a first dragging plate 1522 fixed on the first link 1521, the second cleaning unit 153 includes a second link 1531 and a second dragging plate 1532 fixed on the second link 1531, the cleaning members 1523 and 1533 are respectively disposed on the surfaces of the first dragging plate 1522 and the second dragging plate 1532, and the first link 1521 and the second link 1531 perform synchronous and symmetrical reciprocating motion under the driving of the driving assembly 151.

In the embodiment of the present application, the cleaning members 1523 and 1533 are respectively disposed on the surfaces of the first dragging plate 1522 and the second dragging plate 1532, and the first dragging plate 1522 and the second dragging plate 1532 drive the cleaning members 1523 and 1533 to perform reciprocating wiping. The driving assembly 151 drives the first link 1521 and the second link 1531 to move, so as to drive the first dragging plate 1522 and the second dragging plate 1532 to move, and the shapes and structures of the first dragging plate 1522 and the second dragging plate 1532 can be free. The first mop plate 1522 and the second mop plate 1532 can be set to have larger areas, so that the cleaning pieces 1523 and 1533 are driven to wipe large areas, and the cleaning efficiency is improved.

In order to conform to the design of the symmetrical structure of the appearance of the sweeping robot, the first planker 1522 and the second planker 1532 may have the same or substantially the same size. On the other hand, the first mop plate 1522 and the second mop plate 1532 may have the same or substantially the same size, and the forces applied to the first mop plate 1522 and the second mop plate 1532 may be substantially the same, so that the cleaning members 1523 and 1533 of the two cleaning units perform the same wiping, and have the same cleaning effect.

In one embodiment, the first link 1521 moves in the length direction of the first link 1521 and the second link 1531 moves in the length direction of the second link 1531. The driving assembly 151 can drive the first link 1521 and the second link 1531 to move under the condition that the contact area between the first link 1521 and the second link 1531 is small, and the acting force applied to the first dragging plate 1522 and the second dragging plate 1532 is uniform.

In one embodiment, the drive assembly 151 includes: a motor 1511, an elliptical cam 1512, and two resilient members 1513. Wherein, the elliptical cam 1512 is mounted on the rotation output shaft of the motor 1511; the elastic element 1513 is connected between the adjacent ends of the first link 1521 and the second link 1531 to form a movable chamber between the ends of the two elastic elements 1513, the first link 1521 and the second link 1531; during rotation of the elliptical cam 1512 within the active lumen, the outer edge of the elliptical cam 1512 is in sliding contact with the ends of the first link 1521 and the second link 1531.

In the embodiment of the present application, the elliptical cam 1512 is driven by the motor 1511 to rotate. The elliptical cam 1512 rotates in the movable cavity, and under the reset action of the elastic element 1513, the outer edge of the elliptical cam 1512 keeps in sliding contact with the ends of the first link 1521 and the second link 1531, so that the first link 1521 and the second link 1531 perform synchronous and symmetrical reciprocating motion.

In one example, as shown in fig. 1, the length directions of the first link 1521 and the second link 1531 are both parallel to the expansion and contraction directions of the two elastic elements 1513. So that the first link 1521 moves in the length direction of the first link 1521 and the second link 1531 moves in the length direction of the second link 1531.

In one embodiment, the minor and major axes of the elliptical cams 1512 differ by 6-15 mm. During the rotation of the elliptical cam 1512, under the condition that the long axis of the elliptical cam 1512 is gradually contacted with the ends of the first link 1521 and the second link 1531, the first link 1521 and the second link 1531 move back to back; when the short axis of the elliptical cam 1512 is gradually in contact with the ends of the first link 1521 and the second link 1531, the first link 1521 and the second link 1531 move in opposite directions, and therefore the range of movement of the first link 1521 and the second link 1531 which perform synchronous symmetrical reciprocating movement depends on the difference between the short axis and the long axis of the elliptical cam 1512. That is, in the case where the first mop plate 1522 and the second mop plate 1532 are sized, the larger the difference between the short axis and the long axis of the elliptical cam 1512 is, the larger the area swept by the first cleaning unit 152 and the second cleaning unit 153 is, and the smaller the difference between the short axis and the long axis of the elliptical cam 1512 is, the smaller the area swept by the first cleaning unit 152 and the second cleaning unit 153 is.

In one embodiment, the length of the first link 1521 is greater than the length of the second link 1531. In the embodiment of the present application, the first link 1521 and the second link 1531 respectively function to transmit a force to the first dragging plate 1522 and the second dragging plate 1532. Accordingly, the lengths of the first link 1521 and the second link 1531 may not be the same. In practical applications, the lengths of the first link 1521 and the second link 1531 may be adjusted according to specific installation environments, for example: the lengths of the first link 1521 and the second link 1531 are set according to the movable spaces of the first drag plate 1522 and the second drag plate 1532 and the installation position of the motor 1511.

In one embodiment, the first link 1521 and the second link 1531 are each configured as a narrow middle and wide end. The first link 1521 and the second link 1531 perform synchronous symmetrical reciprocating motion under the rotation of the elliptical cam 1512. The cleaning assembly of the present embodiment is used for cleaning the floor, and therefore, the first dragging plate 1522 is disposed below the first connecting rod 1521, and the second dragging plate 1532 is disposed below the second connecting rod 1531. In order to enable the first link 1521 and the second link 1531 to perform stable reciprocating motion, the first link 1521 and the second link 1531 need to be disposed in a chute that facilitates the reciprocating motion of the first link 1521 and the second link 1531. The first link 1521 and the second link 1531 are located in the sliding slot, and the first dragging plate 1522 and the second dragging plate 1532 are located below the sliding slot. Under the driving of the driving assembly 151, the first connecting rod 1521 and the second connecting rod 1531 slide in the sliding grooves to drive the first dragging plate 1522 and the second dragging plate 1532 to slide, and the cleaning pieces 1523 and 1533 on the first dragging plate 1522 and the second dragging plate 1532 contact with the ground to wipe the ground, so that the cleaning is realized.

In one embodiment, further comprising a water tank 154, the driving assembly 151, the first cleaning unit 152 and the second cleaning unit 153 are disposed below the water tank 154. Compared with the other positions of the sweeping robot, the lower part of the water tank 154 does not have excessive electronic components and other complex structures, so that the driving assembly 151, the first cleaning unit 152 and the second cleaning unit 153 are convenient to install, and the movable space of the first cleaning unit 152 and the second cleaning unit 153 is large. The elliptical cam 1512 with a large difference between the major axis and the minor axis can be selected to increase the moving range of the first cleaning unit 152 and the second cleaning unit 153, so that the sweeping area of the first cleaning unit 152 and the second cleaning unit 153 is increased, and the cleaning efficiency is improved.

In one embodiment, the water tank 154 is further included, a sliding groove (not shown) and a containing cavity (not shown) for containing the motor 1511 are formed at the bottom of the water tank 154, and the first link 1521 and the second link 1531 are disposed in the sliding groove. In the embodiment of the present application, the driving assembly 151, the first cleaning unit 152, and the second cleaning unit 153 are disposed below the water tank 154, so that the movable space of the first cleaning unit 152 and the second cleaning unit 153 is large. Furthermore, the bottom of the water tank 154 is provided with a chute (and an accommodating cavity, which are easy to process and can be integrally formed with the water tank 154, and on the other hand, the chute and the accommodating cavity are integrally formed with the water tank 154, and the first planker 1522 and the second planker 1532 are tightly arranged at the bottom of the water tank 154 and slide, so that the whole structure is more compact, and the space waste of the sweeping robot is reduced, and on the other hand, compared with the case that the chute is arranged at other positions of the sweeping robot, the chute of the embodiment of the present application is arranged at the bottom of the water tank 154 and is integrally formed with the bottom of the water tank 154, so that the chute structure is more stable, and the shaking of the sweeping robot caused by the movement of the first cleaning unit 152 and the second cleaning unit 153 is further reduced and.

In one embodiment, the receiving cavity is located at one side of the water tank 154, and the first link 1521 has a length greater than that of the second link 1531. In the embodiment of the present application, the lengths of the first link 1521 and the second link 1531 may be different. In a sweeping robot, the water tank 154 may be provided in an irregular shape in order to accommodate the structure of the sweeping robot. In one example, as shown in FIG. 1, the water tank 154 is shaped to be narrower in the middle and wider on one side. Therefore, the accommodation chamber can be provided at a wider side position in the water tank 154, ensuring a position in the water tank 154 where the accommodation chamber is sufficiently provided, facilitating the processing of the water tank 154, and facilitating the structural stability of the water tank 154. The lengths of the first link 1521 and the second link 1531 are set according to the position of the receiving cavity, the shape of the water tank 154, and the movable space of the first planker 1522 and the second planker 1532, respectively, and the length of the first link 1521 may be greater than that of the second link 1531.

In another aspect of the embodiment of the present application, a sweeping robot 100 is further provided. Fig. 2 is a schematic structural diagram of the sweeping robot 100 according to an embodiment of the present disclosure, and as shown in fig. 2, the sweeping robot 100 according to an embodiment of the present disclosure includes a cleaning assembly 150 in any one of the above aspects, and the cleaning assembly 150 is detachably connected to the sweeping robot 100.

In one example, the motor in the cleaning assembly 150 needs to be connected to a power supply, and a power line of the motor is provided with a connection terminal, and the connection terminal is connected to the sweeping robot 100 in a pluggable manner, so as to detachably connect the cleaning assembly 150 to the sweeping robot 100.

In one example, the water tank is detached from the sweeping robot 100, that is, the driving assembly, the first cleaning unit and the second cleaning unit in the cleaning assembly 150 can be detached from the sweeping robot 100, so that the cleaning assembly 150 can be replaced and maintained. The whole sweeping robot 100 needs to be repaired and replaced under the condition that the cleaning assembly 150 is damaged or abraded, so that the service life of the sweeping robot 100 can be prolonged.

In one embodiment, the sweeping robot 100 further includes a universal wheel 110, two side brushes 120 respectively disposed at the left and right sides, a rolling brush 140, and two driving wheels 130 respectively disposed at the left and right sides; the universal wheel 110 and the two side brushes 120 are arranged at the front end of the sweeping robot 100; the two driving wheels 130 and the rolling brush 140 are arranged in the middle of the sweeping robot 100; the cleaning assembly 150 is disposed at the rear end of the sweeping robot 100. After the two side brushes 120 and the rolling brush 140 sweep the dust and the sundries on the ground, the cleaning assembly 150 wipes and cleans stubborn stains on the ground, so as to clean the ground and improve the sweeping effect of the sweeping robot 100.

In one embodiment, the first and second cleaning units of the cleaning assembly 150 are moved in a direction perpendicular to the direction of travel of the sweeping robot 100. In one example, two driving wheels 130 are disposed on two sides of the sweeping robot 100 to drive the sweeping robot 100 to move forward, and the first cleaning unit and the second cleaning unit are disposed at the left and right sides of the rear end of the sweeping robot 100. Under the condition that the sweeping robot 100 moves forwards, the first cleaning unit and the second cleaning unit perform synchronous and symmetrical left-right reciprocating motion, so that the influence of the motion of the first cleaning unit and the second cleaning unit on the movement of the sweeping robot 100 can be avoided, and the stability of the sweeping robot 100 is improved.

In one example, the opposing sides of the first carriage and the second carriage in the cleaning assembly 150 are beveled, and the beveled sides are parallel to each other. Because a certain gap exists between the first carriage and the second carriage, if two opposite side edges of the first carriage and the second carriage are straight edges, the ground under the gap is an area which cannot be cleaned, namely a blank area, under the conditions that the sweeping robot 100 moves forwards and the first carriage and the second carriage reciprocate in the left-right direction. Two opposite side edges of the first carriage and the second carriage are oblique edges which are parallel to each other, so that a blank area can be avoided, and the cleaning effect is further improved.

In the description of the present specification, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature limited to "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly contact but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The above disclosure provides many different embodiments or examples for implementing different structures of the application. The components and arrangements of specific examples are described above to simplify the present disclosure. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various changes or substitutions within the technical scope of the present application, and these should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.