CN210389430U - Inhale paper module and clear useless machine of paper and inhale useless device thereof - Google Patents
Inhale paper module and clear useless machine of paper and inhale useless device thereof Download PDFInfo
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- CN210389430U CN210389430U CN201920826304.1U CN201920826304U CN210389430U CN 210389430 U CN210389430 U CN 210389430U CN 201920826304 U CN201920826304 U CN 201920826304U CN 210389430 U CN210389430 U CN 210389430U
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Abstract
The utility model discloses a paper suction module and a waste suction device of a waste cleaning machine thereof, wherein the paper suction module comprises a paper suction power shell, the interior of the paper suction power shell is a hollow paper suction inner cavity, an air guide groove is arranged on the paper suction inner cavity, and one end of the paper suction inner cavity is communicated with an inner barrel; the paper suction inner cavity is assembled with the first piston in a sealing mode, the other end of the paper suction inner cavity is communicated with an air suction port of the air extractor, the position, provided with the air guide groove, in the paper suction inner cavity is also communicated with the first detection cavity through a detection air pipe, the first detection cavity is internally provided with a second piston in a sealing mode, and the second piston is provided with a permanent magnet; a second spring is arranged in the first detection cavity and between the second piston and the end surface of the communication part of the detection air pipe; a second detection cavity is further formed in the detection shell, a microswitch is installed in the second detection cavity, and the trigger end of the microswitch is opposite to the end face of one end of the trigger rod; the other end of the trigger rod penetrates through the fixed partition plate and the third spring and then is assembled and fixed with the magnet disc, and the magnet disc is made of iron by adopting a permanent magnet; the second piston is homopolar and opposite to the magnet disc.
Description
Technical Field
The utility model relates to a clear useless machine especially relates to an inhale paper module and clear useless machine and inhale useless device thereof.
Background
After the paper is cut, the paper scraps after cutting need to be cleaned, and the paper scraps are sucked into a waste bucket through negative pressure to be stored, so that the normal operation is prevented from being influenced by the paper scraps. However, in practical use, the applicant finds that paper scraps in the waste barrel easily block the air suction port of the air suction pipe, so that the air suction capacity is low, the waste suction force is poor, and the use is seriously affected. In addition, paper scraps are loosely stacked in the waste barrel, so that the waste barrel needs to be frequently replaced, and an operator needs to frequently detect because a device for detecting whether the paper scraps in the waste barrel are fully stacked does not exist. Obviously, this would severely reduce production efficiency and increase operator labor intensity and complexity of equipment use.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned defect of prior art, the utility model aims to solve the technical problem that a inhale paper module and clear useless machine and inhale useless device is provided, it detects whether the wastebin is full of the wastepaper bits in through inhaling the paper module to facilitate the use.
In order to achieve the above object, the utility model provides a paper suction module, characterized by: the paper suction power shell is internally provided with a hollow paper suction inner cavity, an air guide groove is formed in the paper suction inner cavity, and one end of the paper suction inner cavity is communicated with the inner barrel; the paper suction inner cavity is assembled with the first piston in a sealing mode, the other end of the paper suction inner cavity is communicated with an air suction port of the air extractor, the position, in the paper suction inner cavity, where the air guide groove is formed, is also communicated with the first detection cavity through a detection air pipe, the first detection cavity is formed in the detection shell, the first detection cavity is internally provided with a second piston in a sealing mode, and the second piston is provided with a permanent magnet;
a second spring is arranged in the first detection cavity and between the second piston and the end face of the communication part of the detection air pipe, and the second spring is used for generating elastic force for preventing the second piston from moving to the detection air pipe;
a second detection cavity is further formed in the detection shell, a microswitch is installed in the second detection cavity, and the trigger end of the microswitch is opposite to the end face of one end of the trigger rod; the other end of the trigger rod penetrates through the fixed partition plate and the third spring and then is assembled and fixed with the magnet disc, and the magnet disc is made of iron by adopting a permanent magnet; the second piston is homopolar and opposite to the magnet disc.
Preferably, the inner cavity of the paper suction is communicated with a filter head arranged in the inner barrel through a connecting pipe, and a first filter screen is arranged in the filter head.
Preferably, the paper suction power shell is internally provided with a dustproof cavity, the dustproof cavity is communicated with the paper suction inner cavity, a hinge block is fixed inside the dustproof cavity, the hinge block is hinged to one end of the check valve plate through a first pin shaft, and the dustproof cavity is isolated from the paper suction inner cavity in the initial state of the check valve plate.
Preferably, a filter element is arranged in the dustproof cavity and used for filtering fine particles in the air flow, the dustproof cavity is communicated with the air distribution pipe, and the air distribution pipe is communicated with an air suction port of the air extractor through an air suction pipe.
Preferably, an air inlet hole is formed in the first detection cavity and between the second piston and the closed end of the first detection cavity, and the air inlet hole penetrates through the detection shell.
Preferably, in an initial state, the part of the paper suction inner cavity which is not provided with the air guide groove is hermetically assembled with the first piston, the first piston is provided with a first spring convex column, the first spring convex column is sleeved with one end of a first spring, the other end of the first spring is sleeved with a second spring convex column, and the second spring convex column is fixed on the inner wall of the paper suction inner cavity.
The utility model also discloses a clear useless machine inhales useless device, including clear useless machine frame, install the cutting knife in the clear useless machine frame, the cutting knife is used for paper or panel cutting, in the clear useless machine frame, wastepaper department installs and inhales the chaff under the cutting knife cutting, inhales the chaff will in clear useless machine frame, the interior bucket intercommunication of wastepaper department and waste bucket under the cutting knife cutting, interior bucket is provided with two at least not co-altitude paper modules of inhaling in vertical direction.
Preferably, be provided with on the waste bin and get the waste door, get the waste door and pass through hinge and waste bin articulated, and during initial condition, get the waste door and seal waste bin opening part.
The top of the inner barrel is provided with at least one paper beating component, the paper beating component comprises at least one paper beating barrel which is arranged in parallel, a paper beating plate is arranged on the paper beating barrel, the paper beating barrel is sleeved and fixed on a first shaft body, the first shaft body is rotatably assembled with two side plates of the waste barrel, and two ends of the first shaft body respectively penetrate through the side plates and then are assembled and fixed with a first paper beating driving tooth and a second paper beating driving tooth; the first shaft body is driven to rotate in the circumferential direction in a reciprocating mode by the first paper shooting driving teeth and the second paper shooting driving teeth.
Preferably, only the part of the circumference of the first paper shooting driving tooth and the second paper shooting driving tooth, which is not more than 180 degrees, is provided with a latch, and the sum of the latch angles of the first paper shooting driving tooth and the second paper shooting driving tooth forms 360 degrees.
Preferably, in the initial state, the first paper shooting driving tooth is in meshing transmission with the first driving tooth, the first driving tooth is installed at one end of one of the second shaft bodies, and the other end of the second shaft body is installed on the side plate and is in rotatable assembly with the side plate; the other second shaft body corresponding to the second shaft body is provided with a first transmission tooth, the first transmission tooth is in meshing transmission with the second transmission tooth, the second transmission tooth is arranged on a fifth shaft body, the fifth shaft body is rotatably assembled with the side plate, and the second transmission tooth is in meshing transmission with the second paper beating driving tooth; the second paper shooting driving gear is not in meshing transmission with the second transmission gear;
the first driving tooth is in meshing transmission with the second driving tooth, the second driving tooth is assembled with the fourth shaft body, the fourth shaft body is rotatably assembled with the side plate, and the second driving tooth is also in meshing transmission with the other first driving tooth; the first transmission gear is also in meshing transmission with the second transmission gear, the second transmission gear is in meshing transmission with the third driving gear, the third driving gear is arranged on the fourth auxiliary shaft body, and the fourth auxiliary shaft body is rotatably assembled with the side plate;
the second driving gear is arranged on the fourth shaft body, the fourth shaft body is rotatably assembled with the side plate, the second driving gear is also in meshing transmission with another first driving gear, the first driving gear is arranged on the sixth shaft body, the sixth shaft body is rotatably assembled with the side plate, and the first driving gear is in meshing transmission with another first paper beating driving gear;
the first transmission gear is arranged on the other second shaft body, the third driving gear is in meshed transmission with the other first transmission gear, the first transmission gear is arranged on the sixth auxiliary shaft body, and the sixth auxiliary shaft body is rotatably assembled with the side plate.
The utility model has the advantages that:
1. the utility model discloses a different induction port about setting up to inhale the paper module in every induction port department installation, thereby detect the height of wastepaper through inhaling the paper module, and whether the discovery waste bin need clear up in time, thereby avoid artifical inspection, reduce operator intensity of labour and error rate.
2. The utility model discloses a clap the wastepaper bits of paper subassembly in to the waste bin and clap tightly to increase the storage capacity of waste bin, reduce the clearance frequency, just also can improve production efficiency.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged view of fig. 1 at F1.
Fig. 3 is a schematic structural view of the paper-shooting cylinder of the present invention.
Fig. 4 is a schematic structural diagram of the first shaft body, the second shaft body and the motor of the present invention.
FIG. 5 is a schematic view of the projection of the first driving tooth, the second driving tooth and the first shooting driving tooth in the direction A of FIG. 4.
FIG. 6 is a projection view of the second driving gear, the first driving gear and the second paper-shooting driving gear in the direction B in FIG. 4.
Fig. 7 is a schematic structural view of the first shaft body to the sixth shaft body.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of 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 therefore, should not be construed as limiting the present invention.
Referring to fig. 1 to 6, a waste suction device of a waste cleaner comprises a waste cleaner frame 110, a cutter 120 is mounted on the waste cleaner frame 110, the cutter 120 is used for cutting paper or board, a waste suction shell 130 is mounted at a position on the waste cleaner frame 110 where the cutter 120 cuts paper scraps, the waste suction shell 130 connects the position on the waste cleaner frame 110 where the cutter 120 cuts the paper scraps with an inner barrel 141 of a waste barrel 140, a waste taking door 150 is arranged on the waste barrel 140, the waste taking door 150 is hinged to the waste barrel 140 through a hinge, and in an initial state, the opening of the waste barrel 140 is sealed by the waste taking door 150.
The inner barrel 141 is provided with at least two paper suction modules with different heights in the vertical direction, the top of the inner barrel 141 is provided with a plurality of paper shooting cylinders 210 which are arranged in parallel, and the paper shooting cylinders 210 are provided with paper shooting plates 220;
the paper suction module comprises a paper suction power shell 330, a hollow paper suction inner cavity 331 is formed in the paper suction power shell 330, an air guide groove 332 is formed in the paper suction inner cavity 331, one end of the paper suction inner cavity 331 is communicated with a filter head 310 installed in the inner barrel 141 through a connecting pipe 320, and a first filter screen is installed in the filter head 310 and used for preventing paper scraps from entering the connecting pipe 320;
in an initial state, the part of the paper suction inner cavity 331 which is not provided with the air guide groove 332 is hermetically assembled with the first piston 410, the first piston 410 is provided with a first spring convex column 411, the first spring convex column 411 is sleeved with one end of a first spring 420, the other end of the first spring 420 is sleeved with a second spring convex column 333, and the second spring convex column 333 is fixed on the inner wall of the paper suction inner cavity 331;
a dust-proof cavity 335 is further arranged in the paper suction power shell 330, the dust-proof cavity 335 is communicated with the paper suction inner cavity 331, a hinge block 334 is fixed in the dust-proof cavity 335, the hinge block 334 is hinged with one end of a one-way valve plate 432 through a first pin shaft 431, and the dust-proof cavity 335 is isolated from the paper suction inner cavity 331 when the one-way valve plate 432 is in an initial state;
a filter element 440 is installed in the dustproof cavity 335, the filter element 440 is used for filtering fine particles in the airflow, and an air filter element or a dustproof filter screen is directly adopted in the embodiment; the dust-proof chamber 335 is connected to the air-distributing pipe 452, and the air-distributing pipe 452 is connected to the air-suction port of the air-suction machine through the air-suction pipe 451, so that the air-suction machine can apply negative pressure to the inner chamber of the paper-suction machine.
In the paper suction inner chamber 331, be provided with air guide groove 332 department and still communicate with first detection chamber 341 through detecting trachea 460, first detection chamber 341 sets up on detecting shell 340, and seal installation has second piston 491 in first detection chamber 341, installs the permanent magnet on the second piston 491, like neodymium magnet.
A second spring 471 is arranged in the first detection chamber 341 and between the end surface of the communication part of the second piston 491 and the detection air tube 460, and the second spring 471 is used for generating elastic force for preventing the second piston 491 from moving to the detection air tube 460;
an air inlet hole 342 is formed in the first detection cavity 341 and between the second piston 491 and the closed end of the first detection cavity 341, the air inlet hole 342 penetrates through the detection shell 340, so that when the second piston 491 moves, air flow can enter and exit the first detection cavity 341 through the air inlet hole 342;
a second detection cavity 343 is further arranged in the detection shell 340, a micro switch 510 is installed in the second detection cavity 343, a trigger end of the micro switch 510 is opposite to an end face of one end of a trigger rod 480, and the micro switch 510 can be triggered when the trigger rod 480 moves axially;
the other end of the trigger rod 480 passes through the fixed partition 350 and the third spring 472 and is assembled and fixed with the magnet disc 492, and the magnet disc 492 is made of a permanent magnet, such as a neodymium magnet. The third spring 472 is used for generating a force to the magnet disc away from the microswitch;
the second piston 491 is homopolar opposite to the magnet disc 492, thereby generating a repulsive force against each other. In the initial state, due to the repulsive force between the second piston 491 and the magnet disc 492, the magnet disc 492 moves downward against the elastic force of the third spring, so that the trigger lever triggers the micro switch 510, and the signal end of the micro switch is in communication connection with the signal end of the PLC.
When the device is used, the air extractor generates negative pressure to the paper suction inner cavity, so that the first piston is driven to overcome the elastic force of the first spring to move towards the one-way valve plate 432 until the paper suction inner cavities at the two sides of the first piston of the air guide groove are communicated, then the inner barrel is sucked through the communication part of the connecting pipe 320 and the inner barrel 141, so that paper scraps are sucked into the inner barrel, when the paper scrap pressing part completely covers the filter head corresponding to one of the connecting pipes 320, the connecting pipe 320 at the end is in a blocking state, at the moment, the suction force of the paper suction inner cavity to the first piston is reduced, the first piston is reset under the action of the spring, so that the suction force of the paper suction inner cavity to the first detection cavity 341 is increased, the second piston 491 overcomes the elastic force of the second spring to move upwards, so that the repulsive force between the second piston and the magnet disc is reduced, the magnet disc moves upwards under the action of the, the micro switch interrupts the signal input by the PLC, and the PLC judges that the paper scrap is full.
When the micro-gap switch who is located the top loses the signal of telecommunication, interior bucket is judged for needs clearance to PLC, then reminds the operator through the reminding device who sets up in advance, and the reminding device of this embodiment is the pilot lamp, and when every not co-altitude micro-gap switch loses the signal of telecommunication, the pilot lamp that the PLC control corresponds lights to make the operator surveyability. The design realizes the function of automatically detecting the height of the paper scraps in the inner barrel, thereby facilitating the use and improving the production efficiency.
In order to compress paper scraps in the inner barrel to improve the holding capacity of the inner barrel, the applicant designs a paper-beating assembly, wherein the paper-beating assembly comprises a paper-beating barrel 210 and a paper-beating plate 220, the paper-beating barrel 210 is sleeved and fixed on a first shaft body 610, the first shaft body 610 is rotatably assembled with two side plates 142 of the waste barrel 140, and two ends of the first shaft body 610 respectively penetrate through the side plates 142 and then are assembled and fixed with a first paper-beating driving tooth 821 and a second paper-beating driving tooth 822; only the parts of the circumferences of the first paper shooting driving tooth 821 and the second paper shooting driving tooth 822, which are not more than 180 degrees, are provided with clamping teeth, and the sum of the clamping teeth angles of the first paper shooting driving tooth 821 and the second paper shooting driving tooth 822 forms 360 degrees;
in the initial state, the first paper-shooting driving tooth 821 is engaged with the first driving tooth 811 for transmission, the first driving tooth 811 is arranged at one end of one second shaft body 620, and the other end of the second shaft body 620 is arranged on the side plate 142 and is rotatably assembled with the side plate; a first transmission tooth 831 is installed on the other second shaft body 620 corresponding to the second shaft body 620, the first transmission tooth 831 is in meshing transmission with a second transmission tooth 832, the second transmission tooth 832 is installed on a fifth shaft body 650, the fifth shaft body 650 is rotatably assembled with the side plate 142, and the second transmission tooth 832 is in meshing transmission with the second paper beating driving tooth 822; in the initial state, the second paper shooting driving tooth 822 is not in meshing transmission with the second transmission tooth 832;
a second belt wheel 712 is further fixed on the second shaft body 620, the second belt wheel 712 is connected with a first belt wheel 711 through a synchronous belt 710 to form a belt transmission mechanism, the first belt wheel 711 is fixed on the third shaft body 630, the third shaft body 630 and the two side plates 142 are rotatably assembled, the third shaft body 630 is connected with an output shaft of the motor 520 through a coupling, and the motor 520 can drive the third shaft body to rotate forward and backward in the circumferential direction after being electrified;
the first driving tooth 811 is in meshing transmission with the second driving tooth 812, the second driving tooth 812 is assembled with the fourth shaft body 641, the fourth shaft body 641 is rotatably assembled with the side plate 142, and the second driving tooth 812 is also in meshing transmission with the other first driving tooth 811;
the first transmission gear 831 is also in meshing transmission with the second transmission gear 832, the second transmission gear 832 is in meshing transmission with the third driving gear 813, the third driving gear 813 is installed on the fourth auxiliary shaft body 642, and the fourth auxiliary shaft body 642 is rotatably assembled with the side plate 142;
the second driving tooth 812 is mounted on the fourth shaft body 641, the fourth shaft body 641 is rotatably assembled with the side plate 142, the second driving tooth 812 is also in meshing transmission with another first driving tooth 811, the first driving tooth 811 is mounted on a sixth shaft body 661, the sixth shaft body 661 is rotatably assembled with the side plate 142, and the first driving tooth 811 is in meshing transmission with another first paper-beating driving tooth 821, so as to drive another paper-beating plate to synchronously beat paper;
the first transmission gear 831 is mounted on the second shaft body 620, and the third driving gear 813 is meshed with the first transmission gear 831 for transmission, the first transmission gear 831 is mounted on the sixth auxiliary shaft body 662, and the sixth auxiliary shaft body 662 and the side plate 142 are rotatably assembled. The second driving gear 832 is used for changing the direction of the first shaft body, so that a plurality of first shaft bodies can rotate in a reciprocating mode, namely a plurality of paper clappers can be used for beating paper in a reciprocating mode.
When the paper beating machine is used, the motor 520 is electrified to drive the third shaft body 630 to rotate positively, the third shaft body 630 drives the second shaft body 620 to rotate synchronously through the synchronous belt 710, the second shaft body 620 drives the corresponding fourth shaft body 641 and the first shaft body 610 to rotate through the first driving tooth 811, the second driving tooth 812 and the first paper beating driving tooth 821, the first shaft body 610 drives the paper beating cylinder 210 and the second paper beating driving tooth 822 to rotate synchronously when rotating, and the paper beating cylinder 210 drives the paper beating plate 220 to rotate for beating paper;
when the first flap driving gear 821 is separated from the first driving gear 811, the second flap driving gear 822 is engaged with the second transmission gear 832, the second shaft 620 corresponding to the second transmission gear 832 reversely drives the first shaft 610 to rotate reversely through the first transmission gear 831 and the second transmission gear 832, and the fourth sub-shaft 642 and the sixth sub-shaft 661 are engaged with each other through the third driving gear 813 and the other first transmission gears 831 to drive the rotation.
The design enables the paper-shooting plate to shoot paper in a forward and reverse rotation mode in 360 degrees, so that paper scraps can be shot tightly. If the paper-patting plate rotates 360 degrees in the same direction, the paper scraps are forced to rotate around the circumference of the paper-patting plate, so that the paper-patting effect is not generated, the falling of the paper scraps is not facilitated, and the negative effect is generated.
The details of the present invention are well known to those skilled in the art.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (6)
1. The utility model provides a inhale paper module which characterized by: the paper suction power shell is internally provided with a hollow paper suction inner cavity, an air guide groove is formed in the paper suction inner cavity, and one end of the paper suction inner cavity is communicated with the inner barrel; the paper suction inner cavity is assembled with the first piston in a sealing mode, the other end of the paper suction inner cavity is communicated with an air suction port of the air extractor, the position, in the paper suction inner cavity, where the air guide groove is formed, is also communicated with the first detection cavity through a detection air pipe, the first detection cavity is formed in the detection shell, the first detection cavity is internally provided with a second piston in a sealing mode, and the second piston is provided with a permanent magnet;
a second spring is arranged in the first detection cavity and between the second piston and the end face of the communication part of the detection air pipe, and the second spring is used for generating elastic force for preventing the second piston from moving to the detection air pipe;
a second detection cavity is further formed in the detection shell, a microswitch is installed in the second detection cavity, and the trigger end of the microswitch is opposite to the end face of one end of the trigger rod; the other end of the trigger rod penetrates through the fixed partition plate and the third spring and then is assembled and fixed with the magnet disc, and the magnet disc is made of iron by adopting a permanent magnet; the second piston is homopolar and opposite to the magnet disc.
2. The suction module of claim 1, wherein: the inner cavity of the paper suction is communicated with a filter head arranged in the inner barrel through a connecting pipe, and a first filter screen is arranged in the filter head.
3. The suction module of claim 1, wherein: the paper suction power shell is characterized in that a dustproof cavity is further formed in the paper suction power shell and is communicated with the inner paper suction cavity, a hinge block is fixed inside the dustproof cavity and is hinged to one end of a one-way valve plate through a first hinge pin, and the dustproof cavity and the inner paper suction cavity are isolated when the one-way valve plate is in an initial state.
4. A suction module as claimed in claim 3, wherein: the filter core is installed to dustproof intracavity portion, and the filter core is arranged in filtering the tiny granule in the air current, and dustproof chamber and gas-distributing pipe intercommunication, and the gas-distributing pipe passes through the induction port intercommunication of breathing pipe and air extractor.
5. The suction module of claim 1, wherein: an air inlet hole is formed in the first detection cavity and between the second piston and the closed end of the first detection cavity, and the air inlet hole penetrates through the detection shell.
6. The suction module of claim 1, wherein: in an initial state, the part of the paper suction inner cavity which is not provided with the air guide groove is hermetically assembled with the first piston, the first piston is provided with a first spring convex column, the first spring convex column is sleeved with one end of a first spring, the other end of the first spring is sleeved with a second spring convex column, and the second spring convex column is fixed on the inner wall of the paper suction inner cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920826304.1U CN210389430U (en) | 2019-06-03 | 2019-06-03 | Inhale paper module and clear useless machine of paper and inhale useless device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920826304.1U CN210389430U (en) | 2019-06-03 | 2019-06-03 | Inhale paper module and clear useless machine of paper and inhale useless device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210389430U true CN210389430U (en) | 2020-04-24 |
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ID=70347795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920826304.1U Active CN210389430U (en) | 2019-06-03 | 2019-06-03 | Inhale paper module and clear useless machine of paper and inhale useless device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210389430U (en) |
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2019
- 2019-06-03 CN CN201920826304.1U patent/CN210389430U/en active Active
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