CN221369708U - Rolling storage device of car clothing membrane - Google Patents

Rolling storage device of car clothing membrane Download PDF

Info

Publication number
CN221369708U
CN221369708U CN202323313940.XU CN202323313940U CN221369708U CN 221369708 U CN221369708 U CN 221369708U CN 202323313940 U CN202323313940 U CN 202323313940U CN 221369708 U CN221369708 U CN 221369708U
Authority
CN
China
Prior art keywords
rolling
storage
sleeve
fixedly connected
storage box
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
CN202323313940.XU
Other languages
Chinese (zh)
Inventor
费秋娟
王来军
刘国强
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.)
Suzhou Lanshigu New Material Technology Co ltd
Original Assignee
Suzhou Lanshigu New Material Technology 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 Suzhou Lanshigu New Material Technology Co ltd filed Critical Suzhou Lanshigu New Material Technology Co ltd
Priority to CN202323313940.XU priority Critical patent/CN221369708U/en
Application granted granted Critical
Publication of CN221369708U publication Critical patent/CN221369708U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)

Abstract

The utility model is applicable to the technical field of storage devices, and provides a rolling storage device for a car cover film, which comprises: the storage box has offered the storage groove to its inside extension on its lateral wall, still can dismantle on the lateral wall of storage box and be connected with and be used for sealing the closing cap of storage groove, receiving mechanism, it has: the movable connection in on the storage box lateral wall, and follow the drive assembly that sets up in the storehouse storage tank, still fixedly connected with fixed subassembly on the closing cap, fixed subassembly with drive assembly swing joint is used for control through drive assembly fixed subassembly stretches out/receives the storehouse storage tank, when carrying out the rolling, utilizes drive assembly control fixed subassembly to stretch out from the storehouse inslot for the rolling subassembly on the fixed subassembly removes to the storage box outside, and the follow-up rolling subassembly of utilizing is rolled up the membrane coil, and the rolling is accomplished the back drive assembly control fixed subassembly shrink to the inside of storehouse groove, realizes the receipts of rolling up the membrane coil.

Description

Rolling storage device of car clothing membrane
Technical Field
The utility model belongs to the technical field of storage devices, and particularly relates to a rolling storage device for a car cover film.
Background
The automobile is inevitably knocked in the use process, and once knocked, the automobile paint surface is damaged, so that the repair of the automobile paint requires a large expenditure, and the appearance of the automobile is influenced. In order to better protect the surface of an automobile, an invisible automobile coating film with a protection effect is attached to the surface of the automobile, and the produced automobile coating film is generally stored through a winding device.
The utility model discloses a Chinese patent with the publication number of CN216945476U, a film rolling storage device for invisible car clothing films, which comprises a base frame, a movable stand and a fixed stand, wherein the movable stand is movably arranged on one side of the top surface of the base frame, the fixed stand positioned on the other side of the top surface of the base frame is fixedly arranged on one side of the movable stand, the fixed stand and the movable stand are arranged in parallel, a first mounting block is fixedly arranged on the opposite side wall, a mounting groove is formed in one side wall of the mounting block, a film rolling roller is rotatably mounted in the mounting groove, a limiting sliding groove is formed in the inner wall of one side of the base frame, a limiting sliding block is slidably arranged in the limiting sliding groove, the bottom of the limiting sliding block is transversely fixed even a transmission toothed bar, and the top of the limiting sliding block is fixedly connected with the bottom end of the movable stand, and the movable stand and the fixed stand are respectively arranged on two sides of the top surface of the base frame, so that the film rolling roller can be mounted and dismounted through one static stand and one movable stand, and a user can use more efficiently and conveniently.
However, the device has the following technical problems in actual use:
1. the device can only wind the film material on the film winding roller, the purpose of winding and storing the film cannot be achieved, the film winding roller is still required to be manually taken down from the device, and then is placed at a designated storage position for storage, if the device is used for winding, the film winding roller is not dismounted from the stand frames on two sides after the winding is completed, the film winding can be placed on the device, dust is accumulated on the surface of the film winding after the film winding can be caused by long-time placement, the subsequent use is affected, the device is occupied, and the winding cannot be continued.
2. When the device is used for winding, the two ends of the film roll are not provided with the limiting mechanisms, so that the two ends of the film roll wound on the outer side of the film roll cannot be guaranteed to be aligned when the film roll is wound, the phenomenon that the side edge of the film roll is misplaced and the film roll is fried is easy to occur, and therefore damage can be caused to the edge position of the film roll, and the subsequent normal use is affected.
Disclosure of utility model
The utility model provides a rolling storage device for a car coating film, which aims to solve the problems that the device can only roll the car coating film, a film rolling roller is manually taken down from two side uprights during subsequent storage and conveyed towards a designated storage position, so that the actual storage efficiency is affected, and meanwhile, the device is not provided with limiting devices for the side edges of the film rolling roller at the two ends of the film rolling roller, so that the two ends of the film rolling roller cannot be aligned during rolling, and phenomena such as roll frying and the like are easy to occur.
The utility model is realized in such a way that a rolling storage device of a car cover film comprises: the storage box has offered the storage groove to its inside extension on its lateral wall, still can dismantle on the lateral wall of storage box and be connected with and be used for sealing the closing cap of storage groove, receiving mechanism, it has: the storage tank is characterized by comprising a storage tank body, a storage assembly, a sealing cover, a driving assembly, a fixing assembly, a rolling assembly and a rolling assembly, wherein the storage tank body is movably connected to the side wall of the storage tank body, the driving assembly is arranged in the storage tank body, the sealing cover is fixedly connected with the fixing assembly, the fixing assembly is movably connected with the driving assembly, the driving assembly is used for controlling the fixing assembly to stretch out of or retract into the storage tank body, and the rolling assembly is arranged on the outer side of the fixing assembly and is used for rolling a film material; in this scheme, when carrying out the rolling, utilize the fixed subassembly of drive assembly control to stretch out from the storage inslot for the rolling subassembly on the fixed subassembly removes to the storage box outside, utilizes the rolling subassembly to roll up the membrane roll afterwards, and the rolling is accomplished the back drive assembly control fixed subassembly shrink and is to storage inslot portion, realizes the receipts of depositing the membrane roll.
Preferably, the driving assembly includes: the driving screw is rotationally connected to the inner side wall of the storage tank, one end of the driving screw extends towards the opening of the storage tank, a driving motor is fixedly connected to the outer wall of the storage tank body, the output end of the driving motor is fixedly connected with the driving screw, a threaded sleeve is screwed to the outer wall of the driving screw, a movable plate is fixedly arranged on the outer side of the threaded sleeve, a limit groove is formed in the inner wall of the storage tank corresponding to the driving screw, and a limit block which can slide in the limit groove is fixedly arranged on the movable plate; in this scheme, driving motor output rotates and can drive the drive screw and rotate, and drive screw can drive the swivel nut along its outer wall horizontal migration, and the swivel nut can drive its outside fixed mounting's fly leaf synchronous motion when moving, because mutually supporting between spacing groove and the stopper, consequently can guarantee that the fly leaf can not take place to rotate and rock when horizontal migration.
Preferably, the fixing assembly includes: the sealing cover is fixedly provided with a connecting plate close to the side wall of the storage box body, a sleeve is horizontally fixedly connected to the sealing cover, the other end of the sleeve is fixedly connected to the side wall of the movable plate, and the sleeve is wrapped on the outer side of the driving screw; in this scheme, the internal diameter of sleeve pipe is greater than the external diameter of swivel nut, consequently the sleeve pipe can wrap up in the outside of swivel nut, and during actual installation, telescopic one end fixed mounting is on the connecting plate, and the other end rigid coupling is on the fly leaf, can provide the support for the rotation of follow-up spooling axle.
Preferably, the connecting plate is in transition fit with the storage groove, and the outer side of the connecting plate is abutted against the inner wall of the storage groove at the open position; in this scheme, after the closing cap lid closes on the storage tank, the outside limit of connecting plate and the open position of storage tank limit are laminated mutually to the realization is to the inboard seal of storage tank, avoids external dust entering into the inside pollution that causes the film roll of storage tank when accomodating.
Preferably, the winding assembly includes: the winding shaft is wrapped on the outer side of the sleeve, is rotatably sleeved on the outer side of the sleeve, is fixedly connected with a gear ring in a surrounding manner on the outer wall of one side of the winding shaft, is fixedly connected with a rotating motor, is fixedly provided with a gear at the output end, and is in meshed connection with the gear ring; in this scheme, when rotating motor output rotates, can drive the gear and drive the ring gear rotation, the ring gear then drives the rolling axle and rotates in the sheathed tube outside, realizes the rolling to the membrane material.
Preferably, the winding shaft is further provided with a leveling component, which has: the rolling device comprises a rolling shaft, rolling sleeves symmetrically sleeved on two sides of the rolling shaft, wherein internal threads are arranged on the inner peripheral wall of each rolling sleeve, external threads are further arranged on the outer wall of the rolling shaft corresponding to the two rolling sleeves, the two external threads extend to one side far away from each other, limiting discs are fixedly connected on the side walls, close to each other, of the two rolling sleeves, the limiting discs are sleeved on the outer side of the rolling shaft, and the inner walls of the limiting discs are attached to the outer wall of the rolling shaft; in this scheme, when the rolling membrane material, can adjust the spacing dish in both sides according to the length of membrane material, the mode of regulation is: the outer side of the winding shaft rotates the rotating sleeve, so that the internal thread on the inner wall of the winding shaft is in threaded connection with the external thread on the outer wall of the winding shaft, the two rotating sleeves are controlled to move in opposite directions or away from each other, and further the two limiting discs are controlled to be close to or away from each other, so that the distance between the two limiting discs is adjusted, and winding of film rolls with different lengths is realized.
Through setting up the spacing dish in both sides, can guarantee when rolling membrane material that the wound membrane is rolled up both sides limit remains the alignment all the time, can not appear the phenomenon of wrong limit or skew, has also prevented simultaneously that the membrane from rolling up the problem of perk limit, fold that appears.
Compared with the prior art, the utility model has the beneficial effects that: the utility model relates to a rolling storage device for a car cover film, which comprises:
1. When the film roll is rolled, the driving assembly is used for controlling the fixing assembly to extend out of the storage groove, the rolling assembly on the fixing assembly is moved to the outer side of the storage box body, then the film roll is rolled by the rolling assembly, and after rolling is finished, the driving assembly is used for controlling the fixing assembly to shrink into the storage groove, so that the film roll is rolled.
2. Through setting up the spacing dish in both sides, can guarantee when rolling membrane material that the wound membrane is rolled up both sides limit remains the alignment all the time, can not appear the phenomenon of wrong limit or skew, has also prevented simultaneously that the membrane from rolling up the problem of perk limit, fold that appears.
Drawings
FIG. 1 is a front cross-sectional view of the present utility model;
FIG. 2 is a schematic view of a winding assembly according to the present utility model;
FIG. 3 is an enlarged schematic view of the structure of FIG. 1A according to the present utility model;
FIG. 4 is a schematic view of a screed assembly according to the present utility model;
in the figure:
1. A storage box body; 11. a bin storage tank; 12. a cover;
2. A storage mechanism; 21. a drive assembly; 211. driving a screw; 212. a driving motor; 213. a screw sleeve; 214. a movable plate; 215. a limit groove; 216. a limiting block; 22. a fixing assembly; 221. a connecting plate; 222. a sleeve;
3. A winding assembly; 31. a winding shaft; 32. a gear ring; 33. a rotating motor; 34. a gear;
4. leveling the assembly; 41. a rotating sleeve; 42. an external thread; 43. and a limiting disc.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown.
The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model.
All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1-4, the present utility model provides a technical solution: a roll-up storage device for a car cover film, comprising: the storage box 1 has offered the storage tank 11 to its inside extension on its lateral wall, still can dismantle on the lateral wall of storage box 1 and be connected with the closing cap 12 that is used for sealed storehouse storage tank 11, and receiving mechanism 2, it has: the movable connection is on storage box 1 lateral wall, and along the drive assembly 21 that sets up in the storage tank 11, still fixedly connected with fixed subassembly 22 on the closing cap 12, fixed subassembly 22 and drive assembly 21 swing joint are used for controlling fixed subassembly 22 to stretch out/receive storehouse storage tank 11 through drive assembly 21, and rolling subassembly 3, and it sets up in the fixed subassembly 22 outside, and is used for realizing the rolling to the membrane material.
Further, the driving assembly 21 includes: the driving screw 211 is rotatably connected to the inner side wall of the storage tank 11, one end of the driving screw 211 extends towards the storage tank 11, a driving motor 212 is fixedly connected to the outer wall of the storage box 1, the output end of the driving screw 212 is fixedly connected with the driving screw 211, a threaded sleeve 213 is screwed to the outer wall of the driving screw 211, a movable plate 214 is fixedly arranged on the outer side of the threaded sleeve 213, a limiting groove 215 is formed in the inner wall of the storage tank 11 corresponding to the driving screw 211, and a limiting block 216 which can slide in the limiting groove 215 is fixedly arranged on the movable plate 214.
Specifically, the outer side wall of the movable plate 214 abuts against the inner wall of the storage tank 11, and at least one limiting groove 215 is provided (the device is provided with two limiting grooves 215 and symmetrically arranged on the inner wall of the storage tank 11 on two sides of the driving screw 211), and likewise, two limiting blocks 216 are also provided and are fixedly connected to the outer wall of the movable plate 214, so that the guiding and limiting of the movable plate 214 during moving are enhanced.
Further, the fixing assembly 22 includes: the sealing cover 12 is fixedly provided with a connecting plate 221 on the side wall close to the storage box body 1, a sleeve 222 is horizontally fixedly connected on the connecting plate, the other end of the sleeve 222 is fixedly connected on the side wall of the movable plate 214, and the sleeve 222 is wrapped on the outer side of the driving screw 211.
Further, the connection plate 221 is in transition fit with the storage groove 11, and the outer side of the connection plate 221 is abutted against the inner wall of the open position of the storage groove 11.
Specifically, the outer wall of the connecting plate 221 can be further wrapped with a sealing strip, and gaps between the connecting plate 221 and the inner wall of the storage tank 11 can be further reduced through the sealing strip, so that when the sealing cover 12 is sealed on one side of the storage box body 1, external dust and impurities are effectively prevented from entering the storage tank 11.
Further, the winding assembly 3 includes: the winding shaft 31 wrapped on the outer side of the sleeve 222 is rotatably sleeved on the outer side of the sleeve 222, the gear ring 32 is fixedly connected on the outer wall of one side of the winding shaft 31 in a surrounding manner, the rotating motor 33 is fixedly connected on the sealing cover 12, the gear 34 is fixedly arranged on the output end of the rotating motor, and the gear 34 is in meshed connection with the gear ring 32.
Further, the winding shaft 31 is further provided with a leveling component 4, which has: the rotating sleeves 41 symmetrically sleeved on the two sides of the winding shaft 31 are respectively provided with an internal thread on the inner peripheral wall of each rotating sleeve 41, the outer walls of the winding shafts 31 corresponding to the two rotating sleeves 41 are also provided with external threads 42, the two external threads 42 extend to one far away side, the side walls of the two rotating sleeves 41 close to each other are also fixedly connected with limiting discs 43, the limiting discs 43 are sleeved on the outer sides of the winding shaft 31, and the inner walls of the limiting discs are attached to the outer walls of the winding shafts 31.
Specifically, the diameters of the limiting plates 43 at the two sides do not exceed the inner diameter of the storage tank 11, and the outer diameter of the film roll does not exceed the blocking range of the limiting plates 43 when the film roll is wound, so that the subsequent limiting plates 43 can be guaranteed to be contained in the storage tank 11.
The working principle and the using flow of the utility model are as follows:
The output end of the driving motor 212 drives the driving screw 211 to rotate, and the movable plate 214 is driven to move towards the open position of the storage tank 11 by the screw connection of the screw sleeve 213 and the driving screw 211, so that the sleeve 222 extends out of the storage tank 11;
then the output end of the motor 33 is rotated to drive the gear 34 to rotate, and the gear 34 drives the meshed gear ring 32 to drive the rolling shaft 31 to rotate outside the sleeve 222, so that the film material is rolled;
Meanwhile, the positions of the rotating sleeves 41 are adjusted by utilizing the external threads 42 on the two sides, and then the distance between the limiting discs 43 on the two sides is adjusted, so that the distance is consistent with the width of the film material, and the problem that folds and edge warping cannot occur at the edges and corners of the film material in the rolling process is guaranteed.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (6)

1. The utility model provides a rolling storage device of car clothing membrane which characterized in that: comprising the following steps:
The storage box body (1) is provided with a storage groove (11) extending towards the inside, and the side wall of the storage box body (1) is also detachably connected with a sealing cover (12) for sealing the storage groove (11);
A housing mechanism (2) provided with:
The storage box is movably connected to the side wall of the storage box body (1) and is provided with a driving assembly (21) along the storage groove (11), a fixing assembly (22) is fixedly connected to the sealing cover (12), the fixing assembly (22) is movably connected with the driving assembly (21), and the driving assembly (21) is used for controlling the fixing assembly (22) to stretch out of/retract into the storage groove (11);
and the rolling component (3) is arranged at the outer side of the fixing component (22) and is used for rolling the film material.
2. The roll-up storage device for a car cover film according to claim 1, wherein: the drive assembly (21) comprises:
A driving screw (211) rotatably connected to the inner side wall of the storage tank (11) is provided with one end extending towards the opening of the storage tank (11), a driving motor (212) is fixedly connected to the outer wall of the storage box (1), and the output end of the driving screw is fixedly connected with the driving screw (211);
A screw sleeve (213) is in threaded connection with the outer wall of the driving screw (211), and a movable plate (214) is fixedly arranged on the outer side of the screw sleeve (213);
Limiting grooves (215) are formed in the inner walls of the storage grooves (11) corresponding to the driving screws (211), and limiting blocks (216) which can slide in the limiting grooves (215) are fixedly arranged on the movable plates (214).
3. A roll-up storage device for a car cover film as claimed in claim 2, wherein: the securing assembly (22) includes:
The sealing cover (12) is close to the side wall of the storage box body (1), a connecting plate (221) is fixedly arranged on the side wall of the storage box body, a sleeve (222) is horizontally fixedly connected to the connecting plate, the other end of the sleeve (222) is fixedly connected to the side wall of the movable plate (214), and the sleeve (222) is wrapped on the outer side of the driving screw (211).
4. A roll-up storage device for a car cover film as claimed in claim 3, wherein: the connecting plates (221) are in transition fit with the storage grooves (11), and the outer sides of the connecting plates (221) are abutted to the inner walls of the open positions of the storage grooves (11).
5. A roll-up storage device for a car cover film as claimed in claim 3, wherein: the winding assembly (3) comprises:
the winding shaft (31) is wrapped on the outer side of the sleeve (222) and is rotatably sleeved on the outer side of the sleeve (222);
A gear ring (32) is fixedly connected to the outer wall of one side of the winding shaft (31) in a surrounding mode, a rotating motor (33) is fixedly connected to the sealing cover (12), a gear (34) is fixedly installed at the output end of the rotating motor, and the gear (34) is in meshed connection with the gear ring (32).
6. The roll-up storage device for car cover films as claimed in claim 5, wherein: the winding shaft (31) is further provided with a leveling component (4) which is provided with:
The rolling device comprises rolling shafts (31) and rotating sleeves (41) symmetrically sleeved on the two sides of the rolling shafts (31), wherein internal threads are arranged on the inner peripheral wall of each rotating sleeve (41), external threads (42) are also arranged on the outer wall of each rolling shaft (31) corresponding to the two rotating sleeves (41), and the two external threads (42) extend to one far side;
And the two side walls of the rotating sleeves (41) close to each other are fixedly connected with limiting discs (43), the limiting discs (43) are sleeved on the outer sides of the winding shafts (31), and the inner walls of the limiting discs are attached to the outer walls of the winding shafts (31).
CN202323313940.XU 2023-12-06 2023-12-06 Rolling storage device of car clothing membrane Active CN221369708U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202323313940.XU CN221369708U (en) 2023-12-06 2023-12-06 Rolling storage device of car clothing membrane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202323313940.XU CN221369708U (en) 2023-12-06 2023-12-06 Rolling storage device of car clothing membrane

Publications (1)

Publication Number Publication Date
CN221369708U true CN221369708U (en) 2024-07-19

Family

ID=91870809

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202323313940.XU Active CN221369708U (en) 2023-12-06 2023-12-06 Rolling storage device of car clothing membrane

Country Status (1)

Country Link
CN (1) CN221369708U (en)

Similar Documents

Publication Publication Date Title
CA2724135A1 (en) Spring biased slide arrangement for anti-bow roller tube
CN221369708U (en) Rolling storage device of car clothing membrane
CN116877359A (en) Sand and dust prevention cabin cover for wind driven generator
CN202000873U (en) Hollow glass with internal sun-shading screen and hollow glass system
CN215284299U (en) Automobile rear window heat preservation and insulation device
CN216871529U (en) Stabilize embedded liquid crystal display that effect is strong
US20180266176A1 (en) Motorized Roll-Up Window Shade
CN212090911U (en) Multifunctional roller shutter device for shielding
CN211473789U (en) Foldable coated glass
CN207905682U (en) A kind of Motorized blind roller shutter and the medi-empty glass window for being equipped with Motorized blind roller shutter
CN220709513U (en) Light blocking device for fixed-grid shooting
CN111911790A (en) Double-layer interactive enterprise management culture display window mechanism
CN221304228U (en) Marketing contrast display device
CN216290999U (en) Concealed camera for mobile phone
CN221169362U (en) Bridge cut-off aluminum alloy window of adjustable luminousness
CN221277071U (en) Building outer elevation sunshade structure
CN113914766B (en) Multifunctional energy-saving heat-insulation bridge-cut-off aluminum alloy door and window
CN220928441U (en) Daylighting sunshade integral type skylight curtain system
CN217259119U (en) Ink delivery roller device of aluminum foil printing coating machine
CN220556122U (en) XR immersion display device
CN217783370U (en) Device for improving passive ultralow energy consumption building energy efficiency
CN220150718U (en) Sun shield for intelligent building
CN214934411U (en) Film rolling machine convenient to adjust
CN214943432U (en) Door and window with slide rail safety limit structure
CN220950410U (en) Portable car subsides coiling mechanism

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant