阅读说明：本技术 智能垃圾桶 (Intelligent garbage can ) 是由 胡徐胜 陶彬彬 宋伟建 夏登月 于 2021-08-23 设计创作，主要内容包括：本发明公开了一种智能垃圾桶,它包括储存装置、控制器、满溢检测装置和封口切割开合组件；所述储存装置包括下桶体和设置于下桶体顶部的上桶体,所述上桶体顶部盖有上桶盖,且所述上桶盖由满溢检测装置控制开闭,所述上桶体内部还设置有内桶体；所述满溢检测装置安装于上桶体一侧；所述封口切割开合组件设置于下桶体内部上方；当垃圾桶处于满溢状态时,所述上桶盖盖合时能够触发满溢检测装置,进而所述封口切割开合组件能够打开使垃圾袋落入下桶体内,封口切割开合组件复位后能够对无断点垃圾袋进行双位置封口并切断分割。本发明使用无断点垃圾袋,能够自动检测垃圾满溢,并自动套袋和打包切断,大大提高了垃圾桶储存空间,使用更加方便。(The invention discloses an intelligent garbage can which comprises a storage device, a controller, an overflow detection device and a seal cutting opening and closing assembly, wherein the controller is used for controlling the overflow detection device to overflow; the storage device comprises a lower barrel body and an upper barrel body arranged at the top of the lower barrel body, an upper barrel cover is covered at the top of the upper barrel body, the opening and closing of the upper barrel cover are controlled by an overflow detection device, and an inner barrel body is also arranged in the upper barrel body; the overflow detection device is arranged on one side of the upper barrel body; the sealing, cutting and opening-closing assembly is arranged above the inner part of the lower barrel body; when the garbage can is in an overflow state, the overflow detection device can be triggered when the upper can cover is covered, then the sealing, cutting and opening assembly can be opened to enable the garbage bag to fall into the lower can body, and the sealing, cutting and opening assembly can be reset to seal the breakpoint-free garbage bag in two positions and cut off and partition the breakpoint-free garbage bag. The garbage can is provided with a garbage bag without a break point, can automatically detect the overflow of garbage, and can automatically sleeve the garbage bag, pack and cut off the garbage bag, so that the storage space of the garbage can is greatly increased, and the garbage can is more convenient to use.)

1. The utility model provides an intelligent garbage bin which characterized in that: comprises a storage device, a controller (5), an overflow detection device (6) and a sealing cutting opening and closing component (7);

the storage device comprises a lower barrel body (2) and an upper barrel body (1) arranged at the top of the lower barrel body (2), the bottom of the upper barrel body (1) is communicated with the top of the lower barrel body (2), a lower barrel door (4) is rotatably connected to the side surface of the lower barrel body (2), an upper barrel cover (3) is covered at the top of the upper barrel body (1), the upper barrel cover (3) is controlled to be opened and closed by an overflow detection device (6), an inner barrel body (10) is further arranged inside the upper barrel body (1), and a gap for placing a breakpoint-free garbage bag is formed between the inner barrel body (10) and the upper barrel body (1);

the overflow detection device (6) is arranged on one side of the upper barrel body (1), and the overflow detection device (6) can control the upper barrel cover (3) to rotate to open and close;

the controller (5) is arranged on the side wall of the upper barrel body (1) and is electrically connected with the overflow detection device (6) and the seal cutting opening and closing assembly (7);

the sealing, cutting and opening-closing assembly (7) is arranged above the inner part of the lower barrel body (2), and when the garbage barrel is in a closed or opened state, the sealing, cutting and opening-closing assembly (7) is used for bearing garbage bags;

when the garbage can is in an overflow state, the overflow detection device (6) can be triggered when the upper can cover (3) is covered, then the sealing cutting opening and closing assembly (7) can be opened to enable the garbage bag to fall into the lower can body (2), and the sealing cutting opening and closing assembly (7) can be reset to seal the breakpoint-free garbage bag in two positions and cut off and split the breakpoint-free garbage bag.

2. The intelligent trash can of claim 1, wherein: the overflow detection device (6) comprises a steering engine (61) arranged on one side of the upper barrel body (1), flange couplers (62) are fixedly connected to output shafts at two ends of the steering engine (61), each flange coupler (62) is provided with a cylindrical connecting piece (63), the top of each cylindrical connecting piece (63) is provided with a hinge (64), the top of one cylindrical connecting piece (63) is also provided with a switch mounting bracket (65) which is concave downwards, and the inner side of the top of the switch mounting bracket (65) is provided with a micro switch (66);

two flanges (30) are formed at one end of the upper barrel cover (3), the two flanges (30) are respectively arranged at the upper ends of the two hinge hinges (64), and one flange (30) close to the microswitch (66) penetrates through the switch mounting bracket (65) and is positioned below the microswitch (66);

when the upper barrel cover (3) is completely covered or opened, the two hinge hinges (64) are in a tight closing state, and meanwhile, the upper barrel cover (3) and the microswitch (66) are kept in a parallel and relatively static state;

when the garbage can is in an overflowing state, the upper can cover (3) is blocked to stop rotating when being covered, and the micro switch (66) is triggered by the upper can cover (3) under the condition of continuously rotating along with the switch mounting bracket (65).

3. The intelligent trash can of claim 2, wherein: staving (2) inside still is provided with conveyer (8) down, conveyer (8) and controller (5) electric connection, seal cutting subassembly (7) of opening and shutting and install on conveyer (8), conveyer (8) can order about to seal cutting subassembly (7) of opening and shutting and reciprocate.

4. The intelligent trash can of claim 3, wherein: the sealing, cutting and opening-closing assembly (7) comprises two garbage bearing plates (72) and two hot-melting sealing strips (73), the two garbage bearing plates (72) are respectively installed on the conveying device (8) through electric hinges (71), the two garbage bearing plates (72) can be driven by the electric hinges (71) to complete opening and closing, and the two hot-melting sealing strips (73) are respectively installed at one ends, close to the two garbage bearing plates (72).

5. The intelligent trash can of claim 4, wherein: the conveying device (8) comprises two lead screw driving motors (83) arranged at two ends of the bottom of the lower barrel body (2), two lead screws (82) respectively connected to output shafts of the two lead screw driving motors (83), two baffles (80) arranged inside the lower barrel body (2) and vertically connected with the lower barrel body (2), and two sliding adapter plates (81) respectively sleeved on the two baffles (80) in a sliding manner;

two baffle (80) are close to two lead screw driving motor (83) respectively, two slip keysets (81) are connected on two lead screws (82) through screw-nut respectively, two rubbish loading board (72) are installed on two slip keysets (81) through electronic hinge (71) respectively, two slip keysets (81) can reciprocate under the drive of two lead screw driving motor (83).

6. The intelligent trash can of claim 5, wherein: the garbage can is characterized in that a mouth screwing device (9) is further arranged inside the lower barrel body (2), the mouth screwing device (9) is electrically connected with the controller (5), and the mouth screwing device (9) can screw the garbage bag before the garbage bag is sealed.

7. The intelligent trash can of claim 6, wherein: the mouth screwing device (9) comprises a tray driving motor (92) arranged at the bottom of the lower barrel body (2) and a tray (91) arranged on the output end of the tray driving motor (92).

8. The intelligent trash can of any one of claims 4-7, wherein: the hot-melt seal (73) comprises sealing layers (731) at the upper end and the lower end and a cutting layer (730) in the middle.

9. The intelligent trash can of any one of claims 1-7, wherein: an infrared sensing device used for sensing opening of the upper barrel cover (3) is further arranged on the front side wall of the upper barrel body (1).

Technical Field

The invention relates to the technical field of garbage cans, in particular to an intelligent garbage can.

Background

The garbage bin is domestic requisite articles for daily use, and the garbage bin among the prior art generally is the single-barreled structure, and product function singleness, the capacity ratio is smaller, will fill soon, needs in time clear up just can continue to use to the single breakpoint formula disposal bag that uses still needs manual change disposal bag after filling, frequently changes very inconvenient, still easily bumps some oil stain dirt to on hand when the packing, unusual insanitation.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects of the prior art and provides an intelligent garbage can which uses a breakpoint-free garbage bag, can automatically detect that garbage overflows, automatically covers the bag, packs and cuts off the bag, greatly improves the storage space of the garbage can and is more convenient to use.

In order to solve the technical problems, the technical scheme of the invention is as follows:

an intelligent garbage can comprises a storage device, a controller, an overflow detection device and a sealing, cutting and opening-closing assembly;

the storage device comprises a lower barrel body and an upper barrel body arranged at the top of the lower barrel body, the bottom of the upper barrel body is communicated with the top of the lower barrel body, the side surface of the lower barrel body is rotatably connected with a lower barrel door, the top of the upper barrel body is covered with an upper barrel cover, the opening and closing of the upper barrel cover are controlled by an overflow detection device, an inner barrel body is also arranged in the upper barrel body, and a gap for placing a breakpoint-free garbage bag is formed between the inner barrel body and the upper barrel body;

the overflow detection device is arranged on one side of the upper barrel body and can control the upper barrel cover to rotate to open and close;

the controller is arranged on the side wall of the upper barrel body and is electrically connected with the overflow detection device and the seal cutting opening and closing assembly;

the sealing, cutting and opening-closing assembly is arranged above the inner part of the lower barrel body, and is used for bearing a garbage bag when the garbage barrel is in a closed or opened state;

when the garbage can is in an overflow state, the overflow detection device can be triggered when the upper can cover is covered, then the sealing, cutting and opening assembly can be opened to enable the garbage bag to fall into the lower can body, and the sealing, cutting and opening assembly can be reset to seal the breakpoint-free garbage bag in two positions and cut off and partition the breakpoint-free garbage bag.

Further, the overflow detection device comprises a steering engine arranged on one side of the upper barrel body, flange couplers are fixedly connected to output shafts at two ends of the steering engine, a cylindrical connecting piece is arranged on each flange coupler, a hinge is arranged at the top of each cylindrical connecting piece, a switch mounting bracket which is concave downwards is further arranged at the top of one cylindrical connecting piece, and a micro switch is arranged on the inner side of the top of the switch mounting bracket;

two flanges are formed at one end of the upper barrel cover and are respectively arranged at the upper ends of the two hinge hinges, and one flange close to the micro switch penetrates through the switch mounting bracket and is positioned below the micro switch;

when the upper barrel cover is completely covered or opened, the two hinge hinges are in a tight closing state, and the upper barrel cover and the micro switch are kept in a parallel and relatively static state;

when the garbage bin is in the overflow state, the upper bin cover is blocked to stop rotating when being covered, and the micro switch is triggered by the upper bin cover under the condition that the micro switch continues to rotate along with the switch mounting bracket.

Further, the inside conveyer that still is provided with of staving down, conveyer and controller electric connection, seal the cutting subassembly that opens and shuts and install on conveyer, conveyer can order about to seal the cutting subassembly that opens and shuts and reciprocate.

Further, seal cutting subassembly of opening and shutting includes two rubbish loading boards and two hot melt strip of paper used for sealing, two rubbish loading boards are installed on conveyer through electronic hinge respectively, and two rubbish loading boards can accomplish under the drive of electronic hinge and open and shut, two hot melt strip of paper used for sealing is installed respectively in two rubbish loading board near one end.

Further, the conveying device comprises two lead screw driving motors arranged at two ends of the bottom of the lower barrel body, two lead screws respectively connected to output shafts of the two lead screw driving motors, two baffles arranged inside the lower barrel body and connected with the lower barrel body up and down, and two sliding adapter plates respectively sleeved on the two baffles in a sliding manner;

the two baffles are respectively close to the two screw rod driving motors, the two sliding adapter plates are respectively connected to the two screw rods through screw rod nuts, the two garbage loading plates are respectively installed on the two sliding adapter plates through electric hinges, and the two sliding adapter plates can move up and down under the driving of the two screw rod driving motors.

Further, the inside screw-on device that still is provided with of staving down, screw-on device and controller electric connection, screw-on device can screw the disposal bag before the disposal bag seals.

Further, the mouth screwing device comprises a tray driving motor arranged at the bottom of the lower barrel body and a tray arranged on the output end of the tray driving motor.

Further, the hot-melt seal strip comprises sealing layers at the upper end and the lower end and a cutting layer in the middle.

Further, an infrared sensing device used for sensing opening of the upper barrel cover is further arranged on the front side wall of the upper barrel body.

By adopting the technical scheme, the invention has the following beneficial effects:

the invention adopts the combination of the upper barrel body and the lower barrel body, the inner barrel body is arranged in the upper barrel body, and the breakpoint-free garbage bag is used, thereby increasing the storage space of the garbage barrel and prolonging the time point of throwing garbage. Can the automated inspection garbage bin overflow through overflow detection device, and then directly fall into down the ladle body, need not to observe at any time, can seal the packing automatically and cut off under the effect of sealing the cutting subassembly that opens and shuts down of the disposal bag that falls into down the ladle body, need not manual packing operation, convenient and fast. Meanwhile, the hot-melt sealing strip is used for packaging the garbage bag without the break point, the used garbage bag below can be directly thrown away after being packaged and cut off, the empty garbage bag above is packaged and cut off to form a new garbage bag bottom, and the garbage bag can be continuously used.

Drawings

FIG. 1 is a schematic structural view of a closed trash can according to the present invention;

FIG. 2 is a schematic structural view of the open state of the trash can of the present invention;

FIG. 3 is a schematic structural view of the trash can in an overflow state according to the present invention;

FIG. 4 is an enlarged view of a portion A of FIG. 3;

FIG. 5 is a schematic diagram of the internal structure of the overflow device of the present invention;

FIG. 6 is a schematic view of the inner structure of the lower tub according to the present invention;

FIG. 7 is a schematic structural view of a hot melt seal of the present invention;

wherein, 1, the barrel body is arranged; 2. a lower barrel body; 3. an upper barrel cover; 4. a lower barrel door; 5. a controller; 6. an overfill detection device; 7. the opening and closing component is cut in the sealing; 8. a conveying device; 9. a screw-mouth device; 10. an inner barrel body; 30. a flange; 61. a steering engine; 62. a flange coupling; 63. a cylindrical connecting member; 64. a hinge; 65. a switch mounting bracket; 66. a microswitch; 71. an electric hinge; 72. a refuse carrying plate; 73. hot melting the seal; 80. a baffle plate; 81. a sliding adapter plate; 82. a screw rod; 83. the screw rod drives the motor; 91. a tray; 92. a tray driving motor; 730. cutting the layer; 731. and (7) a sealing layer.

Detailed Description

In order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.

As shown in fig. 1-7, in the present embodiment, an intelligent trash can using a breakpoint-free trash bag is provided, which includes a storage device, a controller 5, an overflow detecting device 6, and a sealing and cutting assembly 7. Storage device specifically comprises lower staving 2 and the last staving 1 that welds in staving 2 tops down, and go up 1 bottoms of staving and 2 tops of lower staving intercommunication, go up 1 inside inner barrel 10 that still is provided with the diameter and is less than last staving 1 of staving, have the clearance of placing no breakpoint disposal bag between inner barrel 10 and the last staving 1, during the use directly will not have the breakpoint disposal bag cover enter the clearance between inner barrel 10 and the last staving 1 in, put into inner barrel 10 according to conventional mode can unique bag bottom. The side surface of the lower barrel body 2 is rotatably connected with a lower barrel door 4, and after the garbage bag in the inner barrel body 10 is filled and falls into the lower barrel body 2, the lower barrel door 4 is opened to take out the garbage bag and throw away the garbage bag. The top of the upper barrel body 1 is covered with an upper barrel cover 3, the upper barrel cover 3 is arranged on an overflow detection device 6, the overflow detection device 6 is arranged on one side of the upper barrel body 1, and the overflow detection device 6 can control the upper barrel cover 3 to rotate to open and close. The controller 5 is also arranged on the side wall of the upper barrel body 1, and the controller 5 is electrically connected with the overflow detection device 6 and the seal cutting opening and closing assembly 7 and used for receiving and sending instructions and controlling running work of all electrified components. The sealing, cutting and opening-closing component 7 is arranged above the inner part of the lower barrel body 2, and when the garbage barrel is normally used and the upper barrel cover 3 is closed or opened, the sealing, cutting and opening-closing component 7 can bear a garbage bag at the upper part; when the garbage bin is in an overflow state, the overflow detection device 6 is triggered when the upper bin cover 3 is covered, and then a signal is transmitted to the sealing cutting opening and closing component 7 through the controller 5, the sealing cutting opening and closing component 7 is opened to enable the filled garbage bag to fall into the lower bin body 2, meanwhile, because the garbage bag without the break point is adopted, the sealing, cutting and opening-closing component 7 can carry out double-position sealing, cutting and dividing on the garbage bag without the break point after being reset and closed, the used garbage bag at the lower part can be directly thrown away after being packaged and cut, the empty garbage bag at the upper part forms a new garbage bag bottom after being packaged and cut, can be continuously used, the repeated process can realize automatic bag sleeving and the length advantage of the garbage bag without break points, can be continuously used for a long time without manual intervention, and only the garbage bag in the lower barrel body 2 needs to be directly lifted and thrown away at regular intervals, thereby greatly improving the convenience of life.

Specifically, the overflow detection device 6 in this embodiment realizes the overflow detection and drives the upper barrel cover 3 to rotate to open and close: the overflow detection device 6 comprises a steering engine 61 arranged on one side of the upper barrel body 1, the steering engine 61 is a motor, output shafts are arranged at two ends of the motor, flange couplers 62 are fixedly connected to the output shafts at two ends of the steering engine 61, a cylindrical connecting piece 63 is arranged on each flange coupler 62, a hinge 64 is arranged at the top of each cylindrical connecting piece 63, a switch mounting support 65 with a downward concave shape is welded at the top of one cylindrical connecting piece 63, and a micro switch 66 is arranged on the inner side of the top of the switch mounting support 65. When the steering engine 61 rotates, the two-end flange couplings 62 are driven to rotate, the two-end cylindrical connecting pieces 63 are further driven to rotate, the hinge hinges 64 on the two-end flange coupling rotate, and the switch mounting bracket 65 and the micro switch 66 also rotate together. Two flanges 30 are formed at one end of the upper barrel cover 3, the two flanges 30 are respectively installed at the upper ends of the two hinge hinges 64, one flange 30 close to the micro switch 66 penetrates through the switch installation support 65 and is located below the micro switch 66, and when the steering engine 61 rotates, the upper barrel cover 3 rotates along with the hinge hinges 64 below to realize opening and closing. When the upper barrel cover 3 is completely covered or opened, including the opening process, the two hinge hinges 64 are always in a tight closing state, and the upper barrel cover 3 is always attached to the lower ends of the hinge hinges 64 due to the gravity, so that the upper barrel cover 3 and the micro switch 66 are kept in a parallel and relatively static state in the processes. When the garbage bin was in the overflow state, go up 3 lid fashionablely can receive top rubbish to hinder the stall, can not cover completely and close, micro-gap switch 66 and switch installing support 65 can continue to rotate by steering wheel 61 control and be close to toward the normal position this moment, certain angle is also opened to hinge 64, up to last bung 3 touch micro-gap switch 66, controller 5 can control after receiving the signal and seal cutting subassembly 7 that opens and shuts and open so that the disposal bag of filling with falls into lower staving 2 in, and carry out follow-up process, it also can cover completely and close to go up bung 3.

In order to prevent the garbage bag from being punctured by hard sharp garbage due to overlarge impact force when the garbage bag falls, in this embodiment, a transmission device 8 is further disposed inside the lower barrel 2, the transmission device 8 is electrically connected to the controller 5, the sealing and cutting open/close component 7 is mounted on the transmission device 8, when the garbage can is in an overflow state, except that the sealing, cutting and opening-closing component 7 can be slowly opened, the garbage bag can not fall off at a time, meanwhile, the controller 5 controls the conveying device 8 to drive the seal cutting opening and closing assembly 7 to slowly move downwards, when the sealing, cutting and opening-closing component 7 moves down to half height, the sealing, cutting and opening-closing component can be completely opened, at this time, the garbage bag can completely fall into the lower barrel body 2, under descending height and the influence of the height of opening of the sealing, cutting and opening assembly 7, the falling height of the garbage bag at the moment is very low, and the garbage bag cannot be damaged and punctured. The back conveyer 8 that the disposal bag dropped completely can order about to seal cutting subassembly 7 that opens and shuts and slowly move up the return, seals cutting subassembly 7 that opens and shuts simultaneously and also can slowly be closed, treats to seal the work of cutting off again after the complete return is closed.

Specifically, the seal cutting opening and closing assembly 7 in this embodiment realizes the seal cutting and the bearing opening and closing: the sealing, cutting and opening-closing assembly 7 comprises two garbage bearing plates 72 and two hot-melt sealing strips 73, the two garbage bearing plates 72 are respectively installed on the conveying device 8 through electric hinges 71, motors are arranged in the electric hinges 71 and controlled to open and close through the controller 5, the two garbage bearing plates 72 can be driven by the electric hinges 71 to complete opening and closing, and the two hot-melt sealing strips 73 are respectively installed at one ends of the two garbage bearing plates 72 close to each other. The two refuse carrying plates 72 act to carry the upper refuse bags when closed and to drop them when open. And after the garbage bags completely fall off and the two garbage bearing plates 72 are closed in situ, the two hot-melt seals 73 cut off the garbage bags with double seals.

Specifically, the hot-melt seal 73 in the present embodiment is formed by packing and cutting two seals: the hot-melt seal 73 is specifically divided into a sealing layer 731 at the upper end and a sealing layer 730 at the lower end and a cutting layer 730 in the middle, the sealing layer 731 at the upper end and the sealing layer 731 at the lower end are sealed and packaged firstly, and then the cutting layer 730 in the middle is cut off, so that the upper and the lower separation of the breakpoint-free garbage bag is realized. Seal layer 731 and cutting layer 730 all are through electric heat high temperature treatment, and the temperature of sealing layer 731 can not be very high, just realizes hot melt bonding and seals, and the temperature of cutting layer 730 is higher, just can scald disconnected disposal bag, and the advantage of adopting hot melt strip of paper used for sealing 73 is that simple structure puts in place one step. Of course, in other embodiments, other devices may be used in place of the hot melt seal 73, such as a combination of a conventional steel tape baler and a cutting knife.

Specifically, the conveying device 8 in this embodiment drives the seal cutting opening and closing assembly 7 to move up and down: the conveying device 8 is specifically composed of two lead screw driving motors 83 installed at two ends of the bottom of the lower barrel body 2, two lead screws 82 respectively connected to output shafts of the two lead screw driving motors 83, two baffles 80 installed inside the lower barrel body 2 and connected with the lower barrel body 2 up and down, and two sliding adapter plates 81 respectively sleeved on the two baffles 80 in a sliding manner. The two baffles 80 are respectively close to the two screw rod driving motors 83, the baffles 80 mainly function to protect the screw rods 82 and the screw rod driving motors 83 from being influenced by interference of garbage bags, and meanwhile, the baffles also have a limiting and guiding function on the two sliding adapter plates 81. The two sliding adapter plates 81 are respectively connected to the two screw rods 82 through screw rod nuts, and the two garbage bearing plates 72 are respectively installed on the two sliding adapter plates 81 through the electric hinges 71. The two screw rod driving motors 83 are controlled by the controller 5 to rotate, and drive the two screw rods 82 to rotate, so as to drive the two sliding adapter plates 81 to move up and down. And polish rods can be arranged on two sides of the screw rod 82, so that the sliding adapter plate 81 is more stable and accurate when moving up and down.

In order to facilitate sealing and packaging and facilitate packaging and cutting, the lower barrel body 2 is further internally provided with the screwing device 9, the screwing device 9 is electrically connected with the controller 5, before the garbage bag is sealed, namely when the two garbage bearing plates 72 are closed completely, the screwing device 9 is controlled to screw the opening part of the garbage bag, and then sealing and cutting are performed conveniently and firmly.

Specifically, the screw opening device 9 of the present embodiment is composed of a tray driving motor 92 installed at the bottom of the lower tub 2 and a tray 91 installed on the output end of the tray driving motor 92. The disposal bag can fall on tray 91 when dropping, and tray driving motor 92 rotates before the disposal bag seals, drives tray 91 and rotates just can screw disposal bag oral area, and is high-efficient convenient.

In order to conveniently and automatically open the upper barrel cover 3 when throwing garbage, an infrared sensing technology can be adopted, an infrared sensing device is arranged on the front side wall of the upper barrel body 1 in the embodiment and can transmit signals to the controller 5 to further realize the opening operation. Therefore, when people reach the front of the garbage can and are ready to throw garbage, the upper can cover 3 can be automatically opened, the step of manually opening the cover is omitted, and the garbage can is convenient and clean.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The technical problems, technical solutions and advantages of the present invention have been described in detail with reference to the above embodiments, and it should be understood that the above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.