CN214403346U - Long-life energy-saving aluminum alloy door and window assembly structure - Google Patents

Long-life energy-saving aluminum alloy door and window assembly structure Download PDF

Info

Publication number
CN214403346U
CN214403346U CN202022504995.9U CN202022504995U CN214403346U CN 214403346 U CN214403346 U CN 214403346U CN 202022504995 U CN202022504995 U CN 202022504995U CN 214403346 U CN214403346 U CN 214403346U
Authority
CN
China
Prior art keywords
fixedly connected
piece
clearance
block
aluminum alloy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202022504995.9U
Other languages
Chinese (zh)
Inventor
陈波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Qianchen Door & Window Co ltd
Original Assignee
Jiangsu Qianchen Door & Window Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Qianchen Door & Window Co ltd filed Critical Jiangsu Qianchen Door & Window Co ltd
Priority to CN202022504995.9U priority Critical patent/CN214403346U/en
Application granted granted Critical
Publication of CN214403346U publication Critical patent/CN214403346U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Power-Operated Mechanisms For Wings (AREA)

Abstract

The utility model belongs to the technical field of aluminum alloy door and window, energy-saving aluminum alloy door and window subassembly structure of long-life, including inside casing and frame, the inside casing passes through the hinge with the frame and articulates, the positive right side fixedly connected with handle of inside casing, the inboard fixedly connected with cavity glass of inside casing, cavity glass's front and the back have all laminated the clearance subassembly, the cavity design in the inside of inside casing, the inside left and right sides of inside casing all is provided with the threaded rod. This scheme passes through mutually supporting of drive assembly, threaded rod, screw thread piece, connecting block, installation piece, activity mouth, drives two clearance subassemblies and moves from top to bottom to the realization neither can increase intensity of labour to the synchronous clearance of the inside and outside dust of cavity glass, and is very convenient, also can not have danger, and the clearance subassembly when not needing to use, still can dismantle and get off, thereby prevents to influence door and window's normal use.

Description

Long-life energy-saving aluminum alloy door and window assembly structure
Technical Field
The utility model relates to an aluminum alloy door and window technical field, more specifically say, relate to energy-saving aluminum alloy door and window subassembly structure of long-life.
Background
The aluminum alloy door and window is a window with frame and sash structures made of aluminum alloy building profiles, has the advantages of attractive appearance, good wind resistance, sealing, energy conservation, high strength, long service life and the like, is widely applied to the field of building engineering, and is used for packaging balconies in home decoration.
But current energy-saving aluminum alloy door and window subassembly structure of long-life does not have the clearance function by oneself, and when people need clear up door and window, people need adopt the brush to clear up door and window, when clearing up the higher position of door and window, need step on the stool and clear up door and window, and is very inconvenient, and this has not only increased people's working strength, and to the clearance of the unsettled window of lateral surface, still has certain danger.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved
Problem to exist among the prior art, the utility model aims to provide a long-life energy-saving aluminum alloy door and window subassembly structure, it does not have the clearance function to have solved current long-life energy-saving aluminum alloy door and window subassembly structure self, when people need clear up door and window, people need adopt brush clearance door and window, when the higher position of clearance door and window, need step on and clear up the door and window on the stool, it is very inconvenient, this working strength who has not only increased people, and to the clearance of the unsettled window of lateral surface, certain dangerous problem still exists.
2. Technical scheme
In order to solve the above problems, the utility model adopts the following technical proposal.
The long-life energy-saving aluminum alloy door and window assembly structure comprises an inner frame and an outer frame, wherein the inner frame is hinged with the outer frame through a hinge, a handle is fixedly connected to the right side of the front side of the inner frame, hollow glass is fixedly connected to the inner side of the inner frame, cleaning assemblies are attached to the front side and the back side of the hollow glass, the inner side of the inner frame is hollow, threaded rods are arranged on the left side and the right side of the inner frame, the top ends and the bottom ends of the two threaded rods are fixedly connected with the inner top wall and the inner bottom wall of the inner frame through bearings respectively, a transmission assembly is arranged above the inner frame and is in transmission connection with the two threaded rods respectively;
two equal threaded connection has the screw thread piece on the threaded rod, two the front and the equal fixedly connected with connecting block in the back of screw thread piece, four the connecting block is close to the equal fixedly connected with installation piece in one side in the inside casing, the left and right sides in the inside casing just is located cavity glass all seted up the expansion gap around, four the installation piece extends respectively in four expansion gaps and with the expansion gap adaptation, four one side that the connecting block was kept away from to the installation piece has all seted up slot, two the both sides of clearance subassembly correspond and peg graft with four installation pieces respectively and with the slot.
Preferably, the clearance subassembly is including the clearance piece, the one side that the clearance piece is close to cavity glass bonds and has the wiping cloth, the fixed inserted block of right side fixedly connected with of clearance piece, the left side of clearance piece is provided with flexible plug-in components, fixed inserted block and flexible plug-in components are pegged graft rather than the slot on the installation piece that corresponds respectively.
Preferably, the transmission assembly includes biax servo motor, the interior roof fixed connection of biax servo motor and inside casing, the equal fixedly connected with bull stick in both sides of biax servo motor output shaft, two the equal fixedly connected with toper action wheel of the one end that biax servo motor was kept away from to the bull stick, two all the cover is equipped with rather than fixed connection's toper from the driving wheel on the threaded rod, two the toper action wheel meshes from the driving wheel with two toper respectively.
Preferably, flexible plug-in components are including seting up at the left movable groove of clearance piece, the activity inslot interlude is provided with movable inserted block, cavity glass's one side fixedly connected with shifting block is kept away from to movable inserted block, cavity glass's one side is kept away from to the clearance piece has seted up the level mouth, level mouth and movable groove intercommunication, one side that the activity inserted block was kept away from to the shifting block runs through the outside that the level mouth extended to the clearance piece.
Preferably, the right side of the movable insertion block is fixedly connected with a return spring, and the right end of the return spring is fixedly connected with the inner wall of the left side of the movable groove.
Preferably, one side of each of the two thread blocks, which is far away from the hollow glass, is fixedly connected with a limiting block, two inner walls, which are parallel to the threaded rod, of one side of the inner frame, which is close to the outer frame, are provided with limiting grooves, and the two limiting blocks are in sliding connection with the two limiting grooves respectively.
3. Advantageous effects
Compared with the prior art, the utility model has the advantages of:
(1) this scheme passes through mutually supporting of drive assembly, threaded rod, screw thread piece, connecting block, installation piece, activity mouth, drives two clearance subassemblies and moves from top to bottom to the realization neither can increase intensity of labour to the synchronous clearance of the inside and outside dust of cavity glass, and is very convenient, also can not have danger, and the clearance subassembly when not needing to use, still can dismantle and get off, thereby prevents to influence door and window's normal use.
(2) Can drive clearance piece and wipe cloth up-and-down motion along with the up-and-down motion of screw piece during the use, and then realize the clearance of cleaning of dust on the hollow glass, after the clearance finishes, at first with flexible plug-in components and slot separation, the cancellation is spacing to the clearance piece, then will fix plug-in components and slot separation, thereby dismantle the clearance piece, from not influencing, door and window's normal use, and because it is adhesive connection with the clearance piece to wipe cloth detachable washing, so that use next time.
(3) Can drive the bull stick through with biax servo motor circular telegram operation and rotate, and then drive the toper action wheel and rotate, along with the rotation of toper action wheel, can drive rather than the toper of meshing from the driving wheel and rotate, and then drive the threaded rod and rotate, when biax servo motor corotation, drive threaded rod corotation, drive the screw thread piece upward movement, when biax servo motor reversal, drive the threaded rod reversal, drive screw thread piece downward movement, so can realize the up-and-down wiping movement of clearance subassembly.
(4) The movable insertion block can be driven to move towards the movable groove by stirring the shifting block rightwards until being separated from the slot, so that the limitation to the cleaning block can be cancelled, the cleaning block is convenient to disassemble, and otherwise, the installation of the cleaning block can be realized.
(5) The reset spring can make the movable insertion block and the slot on the left side be tightly connected, and the limit block and the limit groove can limit and guide when the thread block moves up and down.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a front sectional view of the present invention shown in FIG. 1;
FIG. 3 is a top sectional view of the hollow glass of the present invention connected to a cleaning block;
FIG. 4 is an enlarged view of the point A of FIG. 1 according to the present invention;
FIG. 5 is an enlarged view of the point b in FIG. 2 according to the present invention;
fig. 6 is an enlarged view of the point C in fig. 2 according to the present invention.
The reference numbers in the figures illustrate:
1. an inner frame; 2. an outer frame; 3. a handle; 4. hollow glass; 5. cleaning the assembly; 51. cleaning the block; 52. wiping cloth; 53. fixing the insert block; 54. a telescoping plug-in; 541. a movable groove; 542. a movable insert block; 543. shifting blocks; 544. a horizontal port; 545. a return spring; 6. a threaded rod; 7. a transmission assembly; 71. a double-shaft servo motor; 72. a rotating rod; 73. a conical driving wheel; 74. a conical driven wheel; 8. a thread block; 9. connecting blocks; 10. mounting blocks; 11. a movable opening; 12. a slot; 13. a limiting block; 14. a limiting groove.
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", 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 simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-6, the long-life energy-saving aluminum alloy door and window assembly structure comprises an inner frame 1 and an outer frame 2, wherein the inner frame 1 is hinged to the outer frame 2 through a hinge, a handle 3 is fixedly connected to the right side of the front side of the inner frame 1, hollow glass 4 is fixedly connected to the inner side of the inner frame 1, cleaning assemblies 5 are respectively attached to the front side and the back side of the hollow glass 4, threaded rods 6 are respectively arranged on the left side and the right side of the inner frame 1, the top ends and the bottom ends of the two threaded rods 6 are respectively fixedly connected to the inner top wall and the inner bottom wall of the inner frame 1 through bearings, a transmission assembly 7 is arranged above the inner frame 1, the transmission assembly 7 is respectively in transmission connection with the two threaded rods 6, threaded blocks 8 are respectively in threaded connection with the two threaded rods 6, connecting blocks 9 are respectively and fixedly connected to the front side and the back side of the two threaded blocks 8, and mounting blocks 10 are respectively and fixedly connected to one side of the four connecting blocks 9 close to the inner frame 1, the activity mouth 11 has all been seted up around the left and right sides on the interior frame 1 limit just is located cavity glass 4, four installation pieces 10 extend to respectively in four activity mouths 11 and with activity mouth 11 adaptation, slot 12 has all been seted up to one side that four installation pieces 10 kept away from connecting block 9, two clearance subassembly 5's both sides correspond with four installation pieces 10 respectively and peg graft with slot 12, through transmission assembly 7, the threaded rod 6, threaded block 8, connecting block 9, installation piece 10, the mutually supporting of activity mouth 11, drive two clearance subassembly 5 up-and-down motion, thereby realize the synchronous clearance to the inside and outside dust of cavity glass 4, and is very convenient, neither can increase intensity of labour, also can not have dangerously, and clearance subassembly 5 when need not use, still can dismantle, thereby prevent to influence door and window's normal use.
Specifically, the cleaning assembly 5 comprises a cleaning block 51, a wiping cloth 52 is bonded on one side of the cleaning block 51 close to the hollow glass 4, the bonding mode is a magic tape bonding mode, the wiping cloth 52 is bonded with the hollow glass 4, a fixed insertion block 53 is fixedly connected to the right side of the cleaning block 51, a telescopic insertion piece 54 is arranged on the left side of the cleaning block 51, the fixed insertion block 53 and the telescopic insertion piece 54 are respectively inserted into the corresponding insertion grooves 12 on the mounting block 10, the cleaning block 51 and the wiping cloth 52 can be driven to move up and down along with the up and down movement of the screw block 8 during use, so as to wipe and clean dust on the hollow glass 4, after cleaning is completed, the telescopic insertion piece 54 is firstly separated from the insertion groove 12, the limit of the cleaning block 51 is cancelled, then the fixed insertion block 53 is separated from the insertion groove 12, so as to detach the cleaning block 51 without affecting the normal use of doors and windows, and the wiping cloth 52 is bonded with the cleaning block 51, the wipes 52 can then be removed for cleaning for the next use.
Specifically, the transmission assembly 7 includes a dual-axis servo motor 71, the dual-axis servo motor 71 is fixedly connected with the inner top wall of the inner frame 1, two sides of an output shaft of the dual-axis servo motor 71 are fixedly connected with rotating rods 72, one ends of the two rotating rods 72 far away from the dual-axis servo motor 71 are fixedly connected with conical driving wheels 73, two threaded rods 6 are respectively sleeved with conical driven wheels 74 fixedly connected therewith, the two conical driving wheels 73 are respectively meshed with the two conical driven wheels 74, the rotating rods 72 can be driven to rotate by electrifying the dual-axis servo motor 71, and then the conical driving wheels 73 are driven to rotate, and along with the rotation of the conical driving wheels 73, the conical driven wheels 74 meshed therewith can be driven to rotate, and then the threaded rods 6 are driven to rotate, when the dual-axis servo motor 71 rotates forwards, the threaded rods 6 are driven to rotate forwards, and the threaded blocks 8 are driven to move upwards, when the dual-axis servo motor 71 rotates backwards, the threaded rod 6 is driven to rotate reversely, and the threaded block 8 is driven to move downwards, so that the cleaning component 5 can be cleaned up and down.
Specifically, flexible plug-in components 54 is including seting up at the left movable groove 541 of clearance piece 51, it is provided with movable plug-in block 542 to alternate in the movable groove 541, one side fixedly connected with shifting block 543 that cavity glass 4 was kept away from to movable plug-in block 542, horizontal mouth 544 has been seted up to one side that cavity glass 4 was kept away from to clearance piece 51, horizontal mouth 544 and movable groove 541 communicate, one side that activity plug-in block 542 was kept away from to shifting block 543 runs through horizontal mouth 544 and extends to the outside of clearance piece 51, can drive movable plug-in block 542 and move to movable groove 541 through stirring shifting block 543 right, until separating with slot 12, so can cancel spacing to clearance piece 51, be convenient for the dismantlement of clearance piece 51, otherwise, can realize the installation of clearance piece 51, do not do too much here.
Specifically, a return spring 545 is fixedly connected to the right side of the movable insert 542, the right end of the return spring 545 is fixedly connected to the inner wall of the left side of the movable slot 541, and the return spring 545 can tightly connect the movable insert 542 to the slot 12 of the left side.
Specifically, two equal fixedly connected with stoppers 13 in one side that cavity glass 4 was kept away from to two screw thread pieces 8, and inside casing 1 is close to frame 2 one side two inner walls parallel with threaded rod 6 and all sets up spacing groove 14, and two stoppers 13 are two spacing groove 14 sliding connection respectively, can carry out spacing and direction when screw thread piece 8 up-and-down motion through stopper 13 and spacing groove 14.
The working principle is as follows: when dust on an aluminum alloy door and window needs to be cleaned, firstly, the double-shaft servo motor 71 is electrified to operate to drive the rotating rod 72 to rotate so as to drive the conical driving wheel 73 to rotate, the conical driven wheel 74 meshed with the conical driving wheel 73 can be driven to rotate along with the rotation of the conical driving wheel 73 so as to drive the threaded rod 6 to rotate, when the double-shaft servo motor 71 rotates forwards, the threaded rod 6 is driven to rotate forwards so as to drive the threaded rod 8 to move upwards, when the double-shaft servo motor 71 rotates backwards, the threaded rod 6 rotates backwards so as to drive the threaded block 8 to move downwards, so that the cleaning block 51 and the wiping cloth 52 can be driven to wipe and clean up and down, thereby cleaning of dust on the hollow glass 4 is realized, after cleaning is finished, the telescopic plug-in 54 is firstly separated from the slot 12, the limit of the cleaning block 51 is cancelled, then the fixed plug-in 53 is separated from the slot 12, so that the cleaning block 51 is detached, therefore, the normal use of the door and window is not influenced, and the wiping cloth 52 can be detached and cleaned for the next use because the wiping cloth 52 is connected with the cleaning block 51 in an adhesive way.
It should be noted that each device in the present application is a common device in the market, and can be selected according to the requirement when in specific use, and the circuit connection relationship of each device all belongs to a simple series and parallel connection circuit, and there is no innovation point in the circuit connection, and those skilled in the art can easily implement the circuit connection, and belong to the prior art, and are not described again.
The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by replacing or changing the technical solution and the improvement concept of the present invention with equivalents and modifications within the technical scope of the present invention.

Claims (6)

1. Energy-saving aluminum alloy door and window subassembly structure of long-life, including inside casing (1) and frame (2), its characterized in that: the inner frame (1) is hinged to the outer frame (2) through a hinge, a handle (3) is fixedly connected to the right side of the front face of the inner frame (1), hollow glass (4) is fixedly connected to the inner side of the inner frame (1), cleaning components (5) are attached to the front face and the back face of the hollow glass (4), the inner portion of the inner frame (1) is hollow, threaded rods (6) are arranged on the left side and the right side of the inner frame (1), the top ends and the bottom ends of the two threaded rods (6) are fixedly connected with the inner top wall and the inner bottom wall of the inner frame (1) through bearings respectively, a transmission component (7) is arranged above the inner portion of the inner frame (1), and the transmission component (7) is in transmission connection with the two threaded rods (6) respectively;
two equal threaded connection has screw thread piece (8), two on threaded rod (6) the front and the equal fixedly connected with connecting block (9) in the back of screw thread piece (8), four connecting block (9) are close to the equal fixedly connected with installation piece (10) in one side in inside casing (1), all seted up activity mouth (11), four around the left and right sides in inside casing (1) is lieing in cavity glass (4) the installation piece (10) extend respectively to four activity mouthful (11) in and with activity mouth (11) adaptation, four one side that connecting block (9) were kept away from in installation piece (10) has all seted up slot (12), two the both sides of clearance subassembly (5) correspond with four installation pieces (10) respectively and are pegged graft with slot (12).
2. The long life energy saving aluminum alloy door and window assembly structure of claim 1, wherein: clearance subassembly (5) are including clearance piece (51), one side bonding that clearance piece (51) are close to cavity glass (4) has wiping cloth (52), the fixed inserted block (53) of right side fixedly connected with of clearance piece (51), the left side of clearance piece (51) is provided with flexible plug-in components (54), fixed inserted block (53) and flexible plug-in components (54) are pegged graft rather than slot (12) on the installation piece (10) that corresponds respectively.
3. The long life energy saving aluminum alloy door and window assembly structure of claim 1, wherein: drive assembly (7) are including biax servo motor (71), the interior roof fixed connection of biax servo motor (71) and inside casing (1), the equal fixedly connected with bull stick (72) in both sides of biax servo motor (71) output shaft, two the equal fixedly connected with toper action wheel (73) of one end that biax servo motor (71) were kept away from in bull stick (72), two all the cover is equipped with rather than fixed connection's toper from driving wheel (74), two on threaded rod (6) toper action wheel (73) are followed the meshing of driving wheel (74) with two toper respectively.
4. The long life energy saving aluminum alloy door and window assembly structure of claim 2, wherein: flexible plug-in components (54) are including seting up in left activity groove (541) of clearance piece (51), it inserts piece (542) to alternate to be provided with the activity in activity groove (541), cavity glass (4) one side fixedly connected with shifting block (543) are kept away from in activity block (542), horizontal mouth (544) have been seted up to one side that cavity glass (4) were kept away from in clearance piece (51), horizontal mouth (544) and activity groove (541) intercommunication, one side that activity block (542) were kept away from in shifting block (543) runs through horizontal mouth (544) and extends to the outside of clearance piece (51).
5. The long life energy saving aluminum alloy door and window assembly structure of claim 4, wherein: a return spring (545) is fixedly connected to the right side of the movable inserting block (542), and the right end of the return spring (545) is fixedly connected with the inner wall of the left side of the movable groove (541).
6. The long life energy saving aluminum alloy door and window assembly structure of claim 4, wherein: two equal fixedly connected with stopper (13) in one side that cavity glass (4) were kept away from in screw thread piece (8), limiting groove (14) are all seted up with threaded rod (6) two inner walls that inside casing (1) is close to frame (2) one side, two stopper (13) respectively with two limiting groove (14) sliding connection.
CN202022504995.9U 2020-11-03 2020-11-03 Long-life energy-saving aluminum alloy door and window assembly structure Active CN214403346U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022504995.9U CN214403346U (en) 2020-11-03 2020-11-03 Long-life energy-saving aluminum alloy door and window assembly structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022504995.9U CN214403346U (en) 2020-11-03 2020-11-03 Long-life energy-saving aluminum alloy door and window assembly structure

Publications (1)

Publication Number Publication Date
CN214403346U true CN214403346U (en) 2021-10-15

Family

ID=78033431

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022504995.9U Active CN214403346U (en) 2020-11-03 2020-11-03 Long-life energy-saving aluminum alloy door and window assembly structure

Country Status (1)

Country Link
CN (1) CN214403346U (en)

Similar Documents

Publication Publication Date Title
CN113027311B (en) Aluminum alloy door and window with self-cleaning function
CN209924866U (en) Door and window of aluminium alloy with wash structure
CN214403346U (en) Long-life energy-saving aluminum alloy door and window assembly structure
CN113464027A (en) Multifunctional intelligent aluminum alloy door and window
CN209653894U (en) A kind of aluminium section bar window mount structure
CN200940409Y (en) Environment protection dust-proof window
CN212201755U (en) Aluminum alloy door and window with dustproof ventilation function
CN213087808U (en) Sliding aluminium alloy door and window
CN218588569U (en) Working cabinet with double-open glass door for kitchen
CN219492094U (en) Aluminum alloy window convenient to clean
CN215443840U (en) Easy-to-clean aluminum alloy door and window
CN210564244U (en) Bridge cut-off aluminum window with clean function
CN212415599U (en) Door and window with self-cleaning function
CN212613422U (en) An electric opening window with good thermal insulation effect
CN108915505A (en) A kind of sliding window frame cleaning device
CN211776875U (en) Aluminum alloy door and window convenient to it is clean
CN211500206U (en) Alloy resin high-performance internal and external double-opening door and window
CN210977073U (en) Aluminum alloy window convenient to it is clean
CN111042708A (en) Convenient to use's aluminum alloy door and window
CN224048985U (en) A novel self-cleaning door and window structure
CN216866436U (en) Multifunctional aluminum alloy door and window
CN210948250U (en) Rotatable window convenient to clean
CN220667402U (en) Integrative flat-open window of glass fan inwardly opened window screen
CN223754000U (en) An electric curtain
CN215770330U (en) LED large screen cleaning device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant