Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. 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 be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description of the present application, it is to be understood that the terms "inner," "outer," "upper," "bottom," "front," "back," and the like, when used in the orientation or positional relationship indicated in FIG. 1, are used solely for the purpose of facilitating a description of the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.
The embodiment of the application provides a dust collecting device and cleaning equipment, aiming at the technical problems of a dust collector or a cleaning robot in the related art, and the dust collecting device and the cleaning equipment can collect dirt by using a common household garbage bag, save the cost and facilitate the popularization and the use of the dust collector or the cleaning robot.
The following detailed description of embodiments of the present application will be made with reference to the accompanying drawings.
Referring to fig. 1 to 3, fig. 1 is a schematic view showing an overall structure of a dust collecting apparatus according to an embodiment of the present disclosure, fig. 2 is a front view of fig. 1, and fig. 3 is a sectional view taken along line a-a of fig. 2. According to a first aspect of embodiments of the present application, there is provided a dust collecting apparatus including:
a substrate 10.
Specifically, in the embodiment of the present application, the base 10 may be a housing of a dust collector or a cleaning robot, the base 10 has a mounting cavity, and each functional mechanism may be mounted in the mounting cavity, for example, an air inlet channel, an air outlet channel, a fan, and the like that are generally required to be used by the dust collector or the cleaning robot.
It is understood that an integrated Circuit board or a Printed Circuit Board (PCB) may be mounted in the base 10, and a Controller, such as a Central Processing Unit (CPU), a Micro Control Unit (MCU), a Field-Programmable Gate Array (FPGA), a Programmable Logic Controller (PLC), or the like, may be integrated on the integrated Circuit board or the PCB; the opening and closing of the blower 400 may be controlled by a controller.
In the embodiment of the application, a dust collecting container 20 is arranged in the base body 10, the dust collecting container 20 is provided with a dust collecting cavity 21 and a sewage outlet 22 communicated with the dust collecting cavity 21, a blocking piece 30 is arranged at the sewage outlet 22, and the blocking piece 30 can close or open the sewage outlet 22.
Wherein, when the sewage discharge port 22 is sealed by the plugging member 30, the negative pressure can be kept in the dust collection cavity 21; when the soil discharge opening 22 is opened, soil in the dust collecting chamber 10 can be discharged from the soil discharge opening 22.
Specifically, in the embodiment of the present application, a hook may be disposed at the sewage outlet 22, and the blocking member 30 may be a cover body, and the sewage outlet 22 is closed by clamping a cover body and a buckle. In some possible ways, the cover may be screwed to the waste outlet 22, for example, an external thread may be provided on the waste outlet 22, and an internal thread may be provided on the cover, so that the cover is screwed to the waste outlet 22 to close the waste outlet 22.
Optionally, the blocking member 30 may also be a rubber stopper, which directly plugs the sewage outlet 22, and when the sewage outlet 22 needs to be opened, the rubber stopper is pulled out.
It is understood that the vacuum cleaner or the cleaning robot may perform suction by a blower fan disposed on the air outlet passage, so that negative pressure is formed in the dust collecting container 20, thereby sucking dust and other debris in the external environment into the dust collecting container 20. Therefore, those skilled in the art will understand that the dust collecting container 20 further has an air inlet and an air outlet, and the air inlet is connected to the air inlet channel; the air outlet is connected with the air outlet channel. When the blower is operated, the discharge opening 22 can be closed, so that negative pressure is maintained in the dust collecting container 20, and dust and other debris in the environment can be smoothly sucked into the dust collecting container 20.
In the embodiment of the application, the dust collecting container 20 is arranged in the base body 10, the sewage discharge port 22 is arranged on the dust collecting container 20, and the sewage discharge port is closed by the plugging piece 30; thus, when the sewage discharge port 22 is closed, the dust collecting container 22 can collect dust by negative pressure, thereby realizing a cleaning function; after cleaning, the sewage discharge port 22 can be opened, and the sewage in the dust collection cavity 21 is discharged from the sewage discharge port 22, so that the common household garbage bag can be used for containing the sewage without a special dust collection bag; the use cost of the dust collecting bag can be saved, and the popularization and the use of a dust collector or a cleaning robot are facilitated.
Alternatively, referring to fig. 3, in the embodiment of the present application, the soil discharge port 22 is provided at the bottom of the dust collection container 20.
Specifically, the waste outlet 22 and the dust container 20 may be integrally formed, for example, when the dust container 20 is injection molded, the waste outlet 22 may be formed together. Of course, the waste outlet 22 may be formed by a secondary process, for example, by drilling, cutting or punching the waste outlet 22 after the integrated container 20 is formed.
In the present embodiment, the drain outlet 22 is provided at the bottom of the dust collecting container 20; therefore, when the dust and other debris in the dust collection cavity 21 need to be cleaned, a common household garbage bag can be placed below the dust collection container 20, and then the sewage discharge outlet 22 is opened, so that the dirt in the dust collection cavity 21 can be conveniently discharged, and the cleaning efficiency of the dust collection cavity 21 is improved.
Further, referring to fig. 3 and 4, fig. 4 is a partially enlarged view of B in fig. 3. In the embodiment of the present application, the blocking member 30 may be a plate-shaped structure, and when the sewage draining exit 22 is closed, the blocking member 30 of the plate-shaped structure may abut against the outer edge of the sewage draining exit 22, so as to close the sewage draining exit 22.
Alternatively, in the present embodiment, the blocking member 30 may be slidably coupled to the dust collecting container 20. For example, a sliding groove may be provided on the bottom wall of the dust collection container 20, and the blocking member 30 may be slidably connected to the dust collection container 20 through the sliding groove.
When the sewage draining exit 22 needs to be closed, the blocking piece 30 is slid to the lower part of the sewage draining exit 22, and when the dust collecting cavity 21 needs to be cleaned, the blocking piece 30 can be moved away from the sewage draining exit 22.
In some possible ways, the closure element 30 can be hinged to the dust collecting container 20. That is, a rotating shaft may be provided near the sewage discharge opening 22 of the dust collecting container 20, and the blocking member 30 is hinged to the dust collecting container 20 via the rotating shaft and can rotate relative to the dust collecting container 20 about the rotating shaft, thereby closing or opening the sewage discharge opening 22.
In the embodiment of the application, the blocking piece 30 is used for sealing the sewage outlet 22, so that the sewage outlet 22 can be conveniently and quickly opened, and the cleaning efficiency of the dust collection cavity 21 is improved.
Alternatively, referring to fig. 4 and 5, fig. 5 is a schematic exploded view of a dust collecting device according to an embodiment of the present disclosure. In the embodiment of the present application, the dust collecting device further comprises a driving member 40 disposed on the base body 10, wherein the driving member 40 is used for connecting with the blocking member 30 and driving the blocking member 30 to open or close the sewage outlet 22.
In particular, the driving member 40 may be fixed on the base 10, for example, the driving member 40 is fixed on the base 10 by a screw, a bolt, or a screw. In some possible ways, the driving element 40 can also be snapped onto the base body 10.
In some possible examples, the drive element 40 can be a motor, a cylinder or a piston cylinder, the output shaft or rotor of which can be connected to the closure element 30 and move the closure element 30 over the dust collecting container 20.
The block piece 30 is pushed to slide by an output shaft of, for example, an electric motor, a cylinder or a piston cylinder.
In some possible ways, the drive element 40 and the closure element 30 can also be separate from one another. For example, an eccentric cam may be provided on the output shaft of the motor, and when the eccentric cam abuts against the blocking member 30, the blocking member 30 may abut against the sewage draining exit 22, so as to close the sewage draining exit 22; when the eccentric cam is separated from the blocking piece 30, the blocking piece 30 can rotate relative to the dust collecting container 20 under the action of the self weight and the gravity of the dirt in the dust collecting cavity 21, so that the dirt discharge port 22 is opened to discharge the dirt in the dust collecting cavity 21.
It should be noted that, in this application embodiment, the operation and the stop of the motor, the air cylinder, or the piston cylinder may be controlled by using the aforementioned controller, and a specific control manner thereof may refer to a control manner in the related art, which is not described herein again in this application embodiment. For example, when the dirt in the dust collecting cavity 21 needs to be cleaned, the controller controls the output shaft of the motor, the air cylinder or the piston cylinder to move a preset distance according to a control signal given by a user, so as to drive the blocking piece 30 to move and open the sewage outlet 22, and after the cleaning is finished, the output shaft of the motor, the air cylinder or the piston cylinder is controlled to move reversely. Of course, it is also possible to open or close the soil discharge opening 22 by rotating a preset angle.
Alternatively, in the present embodiment, the driving member 40 includes an electric push rod. The output shaft of the electric ram can be connected to the closing element 30.
In the embodiment of the application, the driving part 40 drives the blocking piece 30 to move, so that the user does not need to manually open the blocking piece 30, the convenience of opening and closing the sewage draining outlet 22 is improved, and the operation is convenient and simple.
In order to ensure the completeness of cleaning the dust collecting chamber 21 each time, the dirt in the dust collecting chamber 21 can be fully discharged, and the dirt in the dust collecting chamber 21 can be conveniently collected to the dirt discharge outlet 22 for cleaning. Referring to fig. 3 to 5, in the embodiment of the present application, the bottom wall of the dust collecting chamber 21 is a sloped wall 211, and the soil discharge opening 22 is located at the end of the sloped wall 211.
That is, in the present embodiment, the bottom wall of the dust collecting chamber 21 is formed in a slope shape, so that the dust and other debris or dirt in the dust collecting chamber 21 can slide along the slope wall 211 to the dirt discharge opening 22 under its own weight without accumulating elsewhere. Thus, when the drain outlet 22 is opened, the dirt in the dust collecting chamber 21 can be completely discharged.
In order to further ensure that the dirt such as dust or other debris in the dust collecting chamber 21 can completely roll or slide down to the dirt discharge outlet 22, referring to fig. 3 and 5, in the embodiment of the present application, a vibration member 50 is further disposed on the base 10.
Wherein, the vibration member 50 can be connected to or separated from the dust container 20 and drive the dust container 20 to vibrate.
Specifically, in the embodiment of the present application, the vibrating element 50 and the base 10 may be fixed, for example, by a screw, a bolt, or a bolt.
Alternatively, in the embodiment of the present application, the vibration member 50 may be a vibration motor or an eccentric motor. When the vibration member 50 is a vibration motor, the vibration member 50 may be connected to the dust container 20, and when the vibration member 50 vibrates, the dust container 20 vibrates together with the vibration member 50, so that the dirt such as dust or other debris in the dust collection chamber 21 rolls or slides down to the drain outlet 22. When the vibration member 50 is an eccentric motor, a cam of the eccentric motor intermittently collides with the dust container 20 to thereby force the dust container 20 to vibrate, so that dirt such as dust or other debris in the dust collecting chamber 21 can roll or slide down to the drain outlet 22.
In the embodiment of the present application, the vibration member 50 is arranged, and the vibration member 50 is utilized to drive the dust collecting container 20 to vibrate, so that when the dust collecting container 20 vibrates, dust or other debris in the dust collecting cavity 21 can be vibrated to fall to the sewage outlet 22, and dirt in the dust collecting cavity 21 can be completely discharged.
It should be noted that in the embodiment of the present application, the vibration member 50 may be triggered to start when the vacuum cleaner or the cleaning robot finishes cleaning, and in some possible examples, the vibration member 50 may also be triggered to start when the sewage draining exit 22 is opened.
Alternatively, in the present embodiment, the air inlet and the air outlet are respectively located on the side wall or the top wall of the dust collecting chamber 21.
By arranging the air inlet and the air outlet on the side wall or the top wall of the dust collection cavity 21 respectively, when the dust collector or the cleaning robot works, dirt on the bottom wall of the dust collection cavity 21 (especially the dirt near the sewage discharge opening 22) can not be lifted, and the cleaning efficiency of the dust collector or the cleaning robot is improved.
Optionally, referring to fig. 3 and 5, in the embodiment of the present application, a support 60 is further movably connected to the base 10, the support 60 is located outside the sewage draining exit 22 and surrounds the sewage draining exit 22 for a circle, and the support 60 is used for supporting the recovery container 101.
Specifically, in the embodiment of the present invention, the supporting member 60 may have a circular ring shape, a triangular ring shape, a circular rectangular shape, or a circular polygonal shape, which is not limited herein.
The support 60 can be detachably connected to the base body 10, for example, by clamping. When the recovery container is used specifically, the support piece 60 can be detached from the base body 10, and the bag mouth of the recovery container 101 is sleeved on the support piece 60; the support member 60 is then engaged with the base member 10, thereby supporting the recovery container 101.
Alternatively, the recovery tank 101 may be a household garbage bag, or a household garbage can, or the like.
It should be noted that, for convenience of description and understanding by those skilled in the art, in the following examples, a garbage bag is described in detail as a specific example of the recycling container 101.
In some alternatives, the supporting member 60 may be slidably connected to the base 10 or inserted. In a specific use, the support member 60 may be pulled out from below the soil discharge opening 22, and after the recovery container 101 is mounted on the support member 60, the support member 60 may be inserted into the base body 10.
In the present embodiment, the recovery tank 101 is supported by the support member 60; thus, when cleaning the dust collecting chamber 21, the user does not need to lift the recovery container 101, and the cleaning is facilitated. Moreover, the recycling container can be continuously sleeved on the supporting member 60, so that the requirement of cleaning the dust collecting cavity 21 for multiple times can be met, namely, dust or other debris cleaned for multiple times can be collected in one recycling container 101, the replacement times of the recycling container 101 can be reduced, and the resource consumption is saved.
Referring to fig. 3, in a specific example, the support member 60 is hinged to the base body 10 by a rotation shaft.
In a specific implementation, the supporting element 60 may also be connected to the base body 10 via a vertically arranged rotating shaft to rotate horizontally and upwardly. When the garbage can is used specifically, the supporting piece 60 can be rotated out from the lower part of the sewage discharge opening 22, and after the garbage bags are sleeved, the supporting piece 60 is rotated to the lower part of the sewage discharge opening 22.
It will be appreciated that the support member 60 in this example may also be hinged to the base body 10 by a transverse pivot. That is, the supporting member 60 can rotate relative to the base body 10 in the vertical direction, so that the supporting member 60 can be prevented from occupying other space when a garbage bag needs to be sleeved on the supporting member 60, and the garbage bag can be used in a small space.
It should be noted that, when the supporting member 60 is hinged to the base 10 through the transverse rotating shaft, since the supporting member 60 has a certain self-weight, after the garbage bag is sleeved and cleaned of dust or other debris, the garbage bag also has a certain weight, which may cause the supporting member 60 to rotate and not support the garbage bag well. To avoid this, in the embodiment of the present application, the supporting member 60 and the base 10 may be connected in a rotation damping manner, for example, the rotating shaft is a damping rotating shaft. In this way, the damping shaft provides sufficient damping to prevent the support member 60 from rotating while supporting the garbage bag.
Optionally, referring to fig. 3 and 5, in the embodiment of the present application, a resilient arm 61 is disposed on the supporting member 60, and the resilient arm 61 is used to be snapped with the base 10 to fix the supporting member 60.
The elastic arm buckle 61 may be a metal elastic sheet, and the metal elastic sheet and the supporting member 60 may be integrally formed or fixed on the supporting member 60 by a connecting member such as a screw, a bolt, a screw rod, or the like.
Carry out the joint through elastic arm buckle 61 and base member 10, like this, can fix support piece 60 on base member 10, can avoid support piece 60 to take place the pivoted condition when supporting disposal bag 101, guarantee that the opening of disposal bag can aim at drain 22 completely.
Optionally, in the embodiment of the present application, one or more elastic arm buckles 61 may be provided. When the number of the elastic arm buckles 61 is one, in order to ensure that the elastic arm buckles 61 and the rotating shaft can provide relatively balanced force for the supporting member 60 and avoid the supporting member 60 from being inclined, the elastic arm buckles 61 can be arranged on the opposite side of the rotating shaft; that is, the elastic arm buckle 61 and the rotating shaft may be respectively located at two opposite sides of the supporting member 60; alternatively, the elastic arm 61 and the rotation shaft may be respectively located at two ends of the diameter of the supporting member 60.
It is understood that when there is more than one elastic arm 61, the elastic arm 61 may be uniformly spaced in the circumferential direction of the supporting member 60.
Further, referring to fig. 3, a clamping portion 11 is disposed at a position of the base 10 corresponding to the elastic arm buckle 61, and the elastic arm buckle 61 is clamped with the clamping portion 11.
Specifically, in the embodiment of the present application, the side wall of the base 10 may be recessed inward to form an avoiding portion, and the clamping portion 11 protrudes from the avoiding portion, so that the elastic arm buckle 61 can be conveniently clamped; meanwhile, after the elastic arm buckle 61 is clamped with the clamping portion 11, the elastic arm buckle 61 can sink into the avoiding portion, the appearance integrity of the whole base body 10 can be guaranteed, and the ornamental value is improved.
It will be appreciated that after a certain amount of dust or other debris has been deposited in the bag, the bag needs to be replaced to avoid blocking the waste outlet 22. At this time, the supporting member 60 is rotated to pass the opening of the garbage bag from the lower side of the supporting member 60 to the upper side of the supporting member 60, and the garbage bag is reversely sleeved on the supporting member 60. In order to facilitate the rotation of the supporting member 60, referring to fig. 3, in the embodiment of the present application, the end of the elastic arm 61 has a pulling piece 611, and the pulling piece 611 protrudes from the clamping portion 11.
Like this, when the disposal bag was established to needs installation cover, the user only needed to stir plectrum 611 with the finger, can be convenient detain 61 with the elastic arm and the separation of joint portion 11 to make things convenient for the installation cover of disposal bag to establish, improved the disposal bag and changed efficiency.
Further, after the bag opening of the garbage bag is sleeved on the supporting member 60, a part of the bag opening of the garbage bag needs to be turned and sleeved outside the supporting member 60. In order to avoid the interference of the elastic arm buckle 61 with the opening of the garbage bag, referring to fig. 3, in the embodiment of the present invention, the elastic arm buckle 61 is fixedly connected to the lower surface of the supporting member 60 and has a bending section facing the upper surface of the supporting member 60, and a gap is formed between the bending section and the outer peripheral wall of the supporting member 60.
Like this, when support piece 60 was established to the sack of disposal bag on the upset cover, can be embedded into in this clearance to can avoid the elastic arm to detain 61 and cause the condition of interference to the disposal bag, can make things convenient for the cover of disposal bag to establish.
Alternatively, referring to fig. 3 and 4, in the embodiment of the present application, the upper surface of the supporting member 60 abuts against the base body 10.
In the present embodiment, the upper surface of the supporting member 60 and the base body 10 are brought into abutment with each other; thus, after the garbage bag is sleeved on the supporting member 60, the opening of the garbage bag is tightly pressed between the upper surface of the supporting member 60 and the lower surface of the base body 10, and the garbage bag can be prevented from falling off.
In some optional examples, a non-slip pad (such as a silicone pad or a latex pad) may be disposed on the upper surface of the support 60, or the upper surface of the support 60 may be configured as a non-slip rough surface, so as to further prevent the garbage bag from slipping off the support 60.
In some alternatives, referring to fig. 5 and 6, fig. 6 is a schematic view of another perspective overall structure of the dust collecting apparatus according to the embodiment of the present disclosure. In the embodiment of the present application, a first avoiding space 12 is provided on the base 10, and the first avoiding space 12 is located below the sewage outlet 22.
In this way, a trash bag can be conveniently placed in the first escape space 12 and dust and other debris can be collected from the waste outlet 22.
For example, a garbage bag may be sleeved on the support member 60, and the support member 60 may be disposed in the first avoidance space 12.
Further, referring to fig. 6 to 8, fig. 7 is a schematic structural view of the dust collecting device provided in the embodiment of the present application after the substrate is hidden, and fig. 8 is a schematic structural view of the dust collecting device provided in the embodiment of the present application after the substrate is hidden. The dust collecting device provided by the embodiment of the application further comprises a box body 70, wherein the box body 70 is movably arranged on the base body 10, and the box body 70 is configured to store the garbage bag roll 100.
Specifically, in the embodiment of the present application, the case 70 may be detachably connected to the base 10.
For example, the case 70 is connected to the base 10 by a hook, a loop, a hook and loop fastener, or a snap fastener. In some possible examples, the case 70 may be provided on the base 10 in the form of a drawer.
The roll of bags 100 can be placed in the box body 70, so that the roll of bags 100 can be conveniently stored, and meanwhile, the use of bags can be facilitated.
Further, referring to fig. 3, in the embodiment of the present application, a second avoiding space 13 is provided on the base 10, and the box body 70 is located in the second avoiding space 13.
Specifically, in the embodiment of the present application, the second avoiding space 13 may be obtained by performing secondary processing on the substrate 10. The box body 70 may be clamped into the second avoiding space 13 in a clamping manner, or may be arranged in the second avoiding space 13 in a drawing manner.
Thus, the case 70 can be housed inside the base 10, and the appearance of the base 10 can be improved while avoiding the case 70 from being lost.
Optionally, the box 70 is hinged to the base 10.
Specifically, two ends of the box body 70 in the length direction may be provided with a rotating shaft, and the rotating shaft is hinged to the inner wall of the second avoiding space 13. Thus, the case 70 can be further prevented from being lost, and the case 70 can be conveniently opened and loaded into the roll 100.
Further, in order to facilitate taking out the garbage bag from the box body 70, referring to fig. 6, in the embodiment of the present application, a bag drawing opening 71 is provided on a side wall of the box body 70, and the bag drawing opening 71 is configured to allow the garbage bag to pass through.
Thus, when the garbage bag is required to be used, the garbage bag can be directly extracted from the extraction opening 71, such as by using a paper extraction. The box body 70 does not need to be opened every time, and the garbage bag can be taken and used conveniently.
Optionally, in order to save the time for sleeving the garbage bag on the support member 60, in the embodiment of the present application, the bag opening 71 may be opened toward the first avoiding space 12. That is, the box body 70 communicates with the first avoidance space 12 through the drawing opening 71.
Therefore, the garbage bag can be directly sleeved on the support piece 60 after being drawn out from the bag drawing opening 71, and the operation is simple and convenient.
During specific operation, a user pulls the shifting piece 611, the supporting piece 60 is pulled out of the garbage bag from the bag opening 71 in the rotating vertical direction, the garbage bag penetrates through the supporting piece 60, the bag opening of the garbage bag is opened, the supporting piece 60 is sleeved with the bag opening in the reverse direction, the supporting piece 60 is rotated through the shifting piece 611, the elastic arm buckle 61 is clamped with the clamping portion 11, and the garbage bag can be installed and replaced.
According to a second aspect of embodiments of the present application, there is provided a cleaning apparatus comprising a dust collecting device 1 as provided in any one of the alternative embodiments of the first aspect of the present application.
Specifically, referring to fig. 7 and 8, an air inlet channel 200 of the cleaning device may be connected to an air inlet of the dust collecting chamber 21, an air outlet channel 300 of the cleaning device may be connected to an air outlet of the dust collecting chamber 21, and a blower 400 is disposed on the air outlet channel 300, so that the dust collecting chamber 21 may maintain a negative pressure state when in use.
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 of the changes or substitutions within the technical scope of the present application, and shall 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.