CN215889130U - Multistage leveling structure of assembled wallboard - Google Patents

Multistage leveling structure of assembled wallboard Download PDF

Info

Publication number
CN215889130U
CN215889130U CN202121619826.8U CN202121619826U CN215889130U CN 215889130 U CN215889130 U CN 215889130U CN 202121619826 U CN202121619826 U CN 202121619826U CN 215889130 U CN215889130 U CN 215889130U
Authority
CN
China
Prior art keywords
adjusting
height
height adjusting
leveling
multistage
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
CN202121619826.8U
Other languages
Chinese (zh)
Inventor
周东珊
丁泽成
王文广
余广
王可
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.)
Zhejiang Yasha Decoration Co Ltd
Original Assignee
Zhejiang Yasha Decoration 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 Zhejiang Yasha Decoration Co Ltd filed Critical Zhejiang Yasha Decoration Co Ltd
Priority to CN202121619826.8U priority Critical patent/CN215889130U/en
Application granted granted Critical
Publication of CN215889130U publication Critical patent/CN215889130U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Finishing Walls (AREA)

Abstract

The utility model belongs to the technical field of architectural decoration, and particularly relates to a multistage leveling structure of an assembled wall board, which comprises a base and a facing connecting piece, wherein the base is used for being connected with the wall body, the facing connecting piece is used for being fixedly connected with the wall board, the base and the facing connecting piece are mutually connected through a height adjusting piece, the height adjusting piece is composed of at least one height adjusting unit, a first height adjusting mechanism is arranged at the bottom of the height adjusting unit and can be mutually matched with a second height adjusting mechanism arranged on the base to adjust the height, and a third height adjusting mechanism is arranged at the side part of the height adjusting unit and can be mutually matched with a fourth height adjusting mechanism arranged on the facing connecting piece to adjust the height. The utility model adopts the mutual matching of a plurality of groups of height adjusting mechanisms, thereby realizing the aim of multi-level adjustment, expanding the leveling range between the base layer wall surface and the decorative surface layer, solving the current situation of leveling of an overlarge or undersize finished surface in a construction site and improving the leveling efficiency.

Description

Multistage leveling structure of assembled wallboard
Technical Field
The utility model belongs to the technical field of architectural decoration, and particularly relates to a multistage leveling structure of an assembled wallboard.
Background
In the industrial interior installation field, the wall panels mostly adopt the forms of factory pre-production and field assembly. In traditional assembly decoration, the leveling of the wall surface is performed through the light steel keel, namely the leveling is performed through the finished surface of the light steel keel, and the installation is time-consuming and labor-consuming. Meanwhile, the method has a small adjusting range under the condition that the finished surface is large, so that sometimes the back surface of the light steel keel needs to be additionally provided with a gasket for treatment, and under the condition that the finished surface is small, the adjusting range is large. Therefore, the leveling mode of the light steel keel has the defects of inconvenient leveling and more working procedures.
For example, CN 202011017082.2's that application number is a rotation type wallboard leveling structure of assembled wall, which comprises a mounting base, the connecting piece, leveling member and hitching member, mount pad fixed mounting is on the wall basic unit, connecting piece sliding connection is on the mount pad, be provided with cylindrical bellying on the connecting piece, leveling member includes adjusting plate and screw rod, the bellying is worn to locate by the screw rod, the screw rod passes through threaded connection on the end plate of bellying, the cover is equipped with the spring on the screw rod, and the tip of screw rod is provided with the baffle, spring one end supports on the baffle, the other end supports the back at the end plate, hitching member fixed mounting is on the wallboard, and hitching member articulates on the adjusting plate. According to the rotary type wallboard leveling structure for the assembled wall surface, the adjustment distance is accurately controlled during wallboard leveling, and the wallboard mounting structure is stable and not easy to loosen. But it adopts single-stage leveling structure, and it still has the regulation scope less in the leveling process, and the leveling is inconvenient problem.
SUMMERY OF THE UTILITY MODEL
The utility model provides a multistage leveling structure of an assembly type wallboard, aiming at overcoming the defects that the leveling mode in the prior art has inconvenient leveling and more working procedures.
In order to realize the purpose of the utility model, the utility model is realized by the following technical scheme:
the utility model provides a multistage leveling structure of assembled wallboard, includes one and is used for the base with wall connection and one be used for with wallboard fixed connection's veneer connecting piece, through height adjusting piece interconnect between base and the veneer connecting piece, height adjusting piece comprises at least one height adjusting unit, height adjusting unit bottom is provided with first height adjusting mechanism, and it can mutually support the height-adjusting with the second adjustment mechanism that sets up on the base, height adjusting unit's lateral part is provided with third height adjusting mechanism, and it can mutually support the height-adjusting with the fourth height adjusting mechanism that sets up on the veneer connecting piece.
The multistage leveling structure comprises three bases, a facing connecting piece and a height adjusting piece, wherein two adjusting mechanisms which are matched with each other are arranged on the three bases, and each adjusting mechanism can stretch and draw in an adjusting process, so that the aim of multistage adjustment is fulfilled. The leveling range between the base layer wall surface and the decorative surface layer is further expanded, the current situation of leveling of an overlarge and undersize finished surface in a construction site is solved, and the leveling efficiency is improved.
Meanwhile, the traditional installation method for avoiding the installation of the keels on the veneer layer can adopt a dotted layout and fix the keels in a nailing or gluing mode, so that the leveling procedure in the installation process of the veneer layer is reduced, and the installation method has the effect of safe and convenient operation.
Preferably, the second adjusting mechanism comprises a connecting column arranged on the base, a second adjusting structure is arranged on the connecting column, the first height adjusting mechanism comprises a first cavity capable of accommodating the connecting column, and a first adjusting structure matched with the second adjusting structure is arranged in the cavity.
Preferably, the third height adjusting mechanism comprises an inner block, a third adjusting structure is arranged on the side edge of the inner block, the fourth height adjusting mechanism comprises a second cavity capable of accommodating the inner block, and a fourth adjusting structure matched with the third adjusting structure is arranged on the inner wall of the second cavity.
Preferably, the first adjusting structure, the second adjusting structure, the third adjusting structure and the fourth adjusting structure are respectively adjusting threads or clamping blocks which can be matched with each other.
According to the utility model, the first adjusting structure and the second adjusting structure as well as the third adjusting structure and the fourth adjusting structure are matched with each other by adopting a mode of adjusting the threads or the clamping blocks.
The screw thread fit mode of adjusting screw thread + adjusting screw thread can be adopted between two pairs of the clamping blocks, or the fit mode of adjusting screw thread + clamping blocks is adopted, and the clamping blocks are embedded into the adjusting screw thread to be fixed. Through the flexible and various matching modes, different matching modes can be selected and used in different use environments.
Preferably, the pitch of the adjusting screw threads in the first adjusting structure and the second adjusting structure is 0.4-0.6 mm, and the pitch of the adjusting screw threads in the third adjusting structure and the fourth adjusting structure is 0.1-0.4 mm.
The screw pitches of the adjusting threads in the first adjusting structure and the second adjusting structure are larger than those of the adjusting threads in the third adjusting structure and the fourth adjusting structure, so that the height can be quickly adjusted when the first adjusting structure and the second adjusting structure are adjusted, the screw pitches of the third adjusting structure and the fourth adjusting structure are smaller, the precision in the adjusting process is greatly improved, and the fine adjusting structure has the advantage of fine adjustment.
Preferably, one of the first adjusting structure and the second adjusting structure is an adjusting thread, the other is a clamping block matched with the adjusting thread, the adjusting thread is further provided with at least one quick adjusting opening in the vertical direction, the width of the clamping block is smaller than or equal to that of the quick adjusting opening, and the height of the clamping block is matched with the thread pitch of the adjusting thread.
In order to improve the height adjusting speed of the first adjusting structure and the second adjusting structure, one of the first adjusting structure and the second adjusting structure is an adjusting thread, the other one of the first adjusting structure and the second adjusting structure is a clamping block, and a quick adjusting gap is arranged at the thread. When needs quick adjustment height, the joint piece can be adjusted from top to bottom along the quick adjustment opening is quick, can rotate the joint piece after the altitude mixture control targets in place, inserts the joint piece in adjusting the screw thread to carry out the altitude mixture fixation to it, can finely tune from top to bottom along adjusting the screw thread when the joint piece rotates in adjusting the screw thread simultaneously.
Preferably, the side edge of the facing connecting piece is also provided with a convex rib convenient to rotate.
Preferably, the top of each height adjusting unit is provided with an inserting column, and the diameter of the inserting column is the same as that of the first cavity, so that the height adjusting units can be inserted and extended mutually.
The height adjusting unit can extend the height of the whole height adjusting piece through the matching between the inserting column and the first cavity, so that the height adjusting piece can be adjusted under different use environments.
Preferably, the surface of the insertion column is provided with a fifth adjusting structure adapted to the first adjusting structure in the first cavity.
The using method of the multi-stage leveling structure comprises the following steps:
(S.1) fixedly connecting the base with the base layer wall in a nailing or gluing mode;
(S.2) adjusting the vertical heights of the base and the height adjusting piece through the matching of the first height adjusting mechanism and the second height adjusting mechanism;
(S.3) adjusting the vertical height between the facing connecting piece and the height adjusting piece through the matching between the third height adjusting mechanism and the fourth height adjusting mechanism until the proper height is reached;
and (S.4) fixedly connecting the veneer connecting piece with the wallboard in a nailing or gluing mode, thereby completing installation.
Therefore, the utility model has the following beneficial effects:
(1) the utility model adopts the mutual matching of a plurality of groups of height adjusting mechanisms, thereby realizing the aim of multi-level adjustment, expanding the leveling range between the base layer wall surface and the decorative surface layer, solving the current situation of leveling of an overlarge or undersize finished surface in a construction site and improving the leveling efficiency.
(2) The cooperation of coarse adjustment and fine adjustment can be adopted in the in-process of height-adjusting, can make the altitude mixture control more accurate.
(3) The utility model is also provided with a quick adjusting device, so that the height can be quickly adjusted in the coarse adjusting process, and the adjusting speed is improved.
(4) The traditional installation method for avoiding the keel additionally arranged on the veneer layer can adopt a dotted layout and fix the veneer layer by nailing or gluing, thereby reducing the leveling procedure in the installation process of the veneer layer and having the effect of safe and convenient operation.
Drawings
FIG. 1 is a schematic diagram of a structure of the present invention.
Fig. 2 is a front view of fig. 1 of the present invention.
FIG. 3 is a schematic cross-sectional view taken along the direction of line A-A of FIG. 2 according to the present invention.
Fig. 4 is a schematic structural view of the height adjusting member of the present invention.
Fig. 5 is a schematic structural diagram of a base according to another embodiment of the present invention.
Fig. 6 is a schematic structural view of a height adjusting member according to another embodiment of the present invention.
Wherein: base 1, veneer connecting piece 2, height adjusting piece 3, height adjusting unit 4, first height adjustment mechanism 5, second adjustment mechanism 6, third height adjustment mechanism 7, fourth height adjustment mechanism 8, spliced pole 9, second regulation structure 10, first cavity 11, first regulation structure 12, adjusting screw 13, joint piece 14, quick adjustment opening 15, embedded section 16, third regulation structure 17, second cavity 18, fourth regulation structure 19, fifth regulation structure 20, bead 21, peg 22.
Detailed Description
The utility model is further described with reference to the drawings and the specific embodiments. Those skilled in the art will be able to implement the utility model based on these teachings. Moreover, the embodiments of the present invention described in the following description are generally only some embodiments of the present invention, and not all embodiments. Therefore, all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1 to 4, a multi-level leveling structure of an assembly type wall panel includes a base 1, a height adjusting member 3, and a facing connecting member 2.
The base 1 may be connected to the wall by screws or by gluing, and one side of the base is provided with a second adjusting mechanism 6, which specifically includes a connecting column 9 disposed on the base 1, and a second adjusting structure 10 is disposed on the connecting column, and in this embodiment, the second adjusting structure 10 is an adjusting screw 13. The thread pitch range of the adjusting thread 13 can be selected within the range of 0.4-0.6 mm, and the thread pitch can be set at 0.5mm in the embodiment.
One end of the bottom of the height adjusting part 3 is provided with a first height adjusting mechanism 5 which comprises a first cavity 11 capable of accommodating the connecting column 9, and a first adjusting structure 12 matched with the second adjusting structure 10 is arranged inside the cavity 11. In this embodiment, the first height adjusting mechanism 5 can also optionally use an adjusting screw 13, which is the same size as the adjusting screw 13 of the second adjusting mechanism 10 and is connected and matched with the adjusting screw, so that the height of 0.5mm can be adjusted up and down after rotating the height adjusting member 3 for one circle.
The top of the side of the height adjusting member 3 is provided with a third height adjusting mechanism 7, and the third height adjusting mechanism 7 comprises an inner block 16, the side of which is provided with a third adjusting structure 17, in this embodiment, the third adjusting structure 17 is also an adjusting thread 13.
One end of the facing connector 2 can be fixedly connected with the wall panel by means of screws or glue, and one side of the facing connector is provided with a fourth height adjusting mechanism 8 which comprises a second cavity 18 capable of accommodating the inner block 16, the inner wall of the second cavity 18 is provided with a fourth adjusting structure 19 for matching with the third adjusting structure 17, and in the embodiment, the fourth adjusting structure 19 also selects an adjusting thread 13 which is the same as the third adjusting structure 17. When the third adjustment structure 17 is engaged with the adjustment thread 13 of the fourth adjustment structure 19, the height can be adjusted by turning the veneer connecting element 2. In this embodiment, the thread pitch range of the adjusting threads 13 of the third adjusting structure 17 and the fourth adjusting structure 19 can be selected between 0.1-0.4 mm, and in this embodiment, 0.2mm can be selected, so that the height can be adjusted by rotating the facing connector 2 for one circle by 0.2 mm.
Because the second adjusting structure 10 and the first adjusting structure 12 can adjust 0.5mm by rotating for a circle, and the third adjusting structure 17 and the fourth adjusting structure 19 can adjust 0.2mm by rotating for a circle, the first adjusting structure 10 and the second adjusting structure 12 in the utility model can be used for coarse adjustment and quick adjustment of height, and because the third adjusting structure 17 and the fourth adjusting structure 19 have smaller screw pitches, the precision in the adjusting process is greatly improved, and the fine adjustment has the advantage of fine adjustment.
In addition, in order to facilitate the rotation of the facing connector 2, the present embodiment is further provided with a rib 21 for facilitating the rotation at the side of the facing connector 2.
In order to adjust the height of the height adjuster under different usage conditions, the height adjuster 3 is composed of at least one height adjusting unit 4. Except for the uppermost height adjusting unit 4, the top of each height adjusting unit 4 is provided with a plugging column 22, and the diameter of the plugging column 22 is the same as that of the first cavity 11, so that the plurality of height adjusting units 4 can be mutually plugged and extended by inserting the plugging column 22 into the first cavity 11. Meanwhile, the surface of the inserting column 22 is provided with a fifth adjusting structure 20 adapted to the first adjusting structure 12 in the first cavity 11, and in this embodiment, the fifth adjusting structure 20 can also select the adjusting screw 13, that is, the fifth adjusting structure and the adjusting screw can be connected by screw threads, so that the height adjusting member can be adjusted under different use environments.
In the embodiment, a plurality of groups of height adjusting mechanisms are matched with each other, so that the aim of multi-level adjustment is fulfilled, the leveling range between the base layer wall surface and the decorative layer is expanded, the leveling situation of an overlarge or undersize finished surface in a construction site is solved, and the leveling efficiency is improved. Meanwhile, the cooperation of rough adjustment and fine adjustment can be adopted in the height adjustment process, so that the height adjustment is more accurate.
The traditional installation method for avoiding the keel additionally arranged on the veneer layer can adopt a dotted layout and fix the veneer layer by nailing or gluing, thereby reducing the leveling procedure in the installation process of the veneer layer and having the effect of safe and convenient operation.
Example 2
With reference to fig. 1 to 6, this embodiment is a modification of embodiment 1, and is different from embodiment 1 in that: in this embodiment, the first adjusting structure 12 is an adjusting screw 13, the second adjusting structure 10 is a row of vertically arranged clamping blocks 14, a quick adjusting opening 15 is further disposed on the adjusting screw 13 in the vertical direction, the width of the clamping block 14 is smaller than or equal to the width of the quick adjusting opening 15, and the height of the clamping block is matched with the screw pitch of the adjusting screw 13. When needs quick adjustment height, joint piece 14 can be adjusted from top to bottom along quick adjustment opening 15 is quick, can rotate joint piece 14 after the altitude mixture control targets in place, inserts joint piece 14 in adjusting screw 13 to carry out the altitude mixture fixation to it, can finely tune from top to bottom along adjusting screw 13 when joint piece 14 rotates in adjusting screw 13 simultaneously.
Therefore, this embodiment can be at coarse adjustment in-process quick adjustment height, has promoted governing speed through being provided with quick adjustment device.
Example 3
A use method of a multi-level leveling structure comprises the following steps:
s.1, fixedly connecting the base 1 with a base layer wall in a nailing or gluing mode;
s.2, adjusting the vertical heights of the base 1 and the height adjusting part 3 by connecting the adjusting threads 13 of the first height adjusting mechanism 5 with the adjusting threads 13 of the second height adjusting mechanism 6 through threads and enabling the adjusting threads and the adjusting threads to rotate relatively;
s.3, adjusting the vertical height between the facing connecting piece 2 and the height adjusting piece 3 by the threaded connection between the adjusting thread 13 of the third height adjusting mechanism 7 and the adjusting thread 13 of the fourth height adjusting mechanism 8 and by enabling the two to rotate relatively until the proper height is reached;
s.4, fixedly connecting the veneer connecting piece 2 with the wallboard in a nailing or gluing mode, thereby completing installation.

Claims (9)

1. The utility model provides a multistage leveling structure of assembled wallboard, its characterized in that, including one be used for with wall connection's base (1) and one be used for with wallboard fixed connection's veneer connecting piece (2), through height adjusting part (3) interconnect between base (1) and veneer connecting piece (2), height adjusting part (3) comprise at least one height adjusting unit (4), height adjusting unit (4) bottom is provided with first height adjusting mechanism (5), and it can mutually support the height-adjusting with second adjustment mechanism (6) of setting on base (1), the lateral part of height adjusting unit (4) is provided with third height adjusting mechanism (7), and it can mutually support the height-adjusting with fourth height adjusting mechanism (8) of setting on veneer connecting piece (2).
2. The multistage leveling structure of an assembled wallboard according to claim 1, wherein the second adjusting mechanism (6) comprises a connecting column (9) arranged on the base (1), a second adjusting mechanism (10) is arranged on the connecting column, the first height adjusting mechanism (5) comprises a first cavity (11) capable of accommodating the connecting column (9), and a first adjusting mechanism (12) used for being matched with the second adjusting mechanism (10) is arranged inside the cavity (11).
3. A multistage levelling structure for assembled wall panels according to claim 2, wherein the third height adjustment means (7) comprises an inner block (16) provided with third adjustment means (17) at its side edges, the fourth height adjustment means (8) comprises a second cavity (18) capable of receiving the inner block (16), the inner wall of the second cavity (18) is provided with fourth adjustment means (19) for cooperation with the third adjustment means (17).
4. The multistage leveling structure of an assembled wallboard according to claim 3, wherein the first adjusting structure (12), the second adjusting structure (10), the third adjusting structure (17) and the fourth adjusting structure (19) are mutually matched adjusting screw threads (13) or clamping blocks (14) respectively.
5. The multistage leveling structure of an assembled wallboard according to claim 4, wherein the pitch of the adjusting screw thread (13) in the first adjusting structure (12) and the second adjusting structure (10) is 0.4-0.6 mm, and the pitch of the adjusting screw thread (13) in the third adjusting structure (17) and the fourth adjusting structure (19) is 0.1-0.4 mm.
6. The multistage leveling structure of the assembled wallboard according to claim 4 or 5, wherein one of the first adjusting structure (12) and the second adjusting structure (10) is an adjusting screw thread (13), the other one is a clamping block (14) matched with the adjusting screw thread (13), the adjusting screw thread (13) is further provided with at least one quick adjusting gap (15) in the vertical direction, the width of the clamping block (14) is less than or equal to the width of the quick adjusting gap (15), and the height of the clamping block is matched with the screw pitch of the adjusting screw thread (13).
7. The multistage leveling structure of the assembled wallboard according to any one of claims 1 to 5, wherein the side edge of the facing connector (2) is further provided with a rib (21) facilitating rotation.
8. The multistage leveling structure of an assembled wall panel as claimed in claim 2, wherein a plug-in post (22) is provided at the top of each height adjusting unit (4), the diameter of the plug-in post (22) is the same as that of the first cavity (11), so that a plurality of height adjusting units (4) can be plugged into each other to be lengthened.
9. A multilevel leveling structure of an assembled wall panel according to claim 8, characterized in that the surface of the plug-in stud (22) is provided with a fifth adjusting structure (20) for adapting to the first adjusting structure (12) inside the first cavity (11).
CN202121619826.8U 2021-07-16 2021-07-16 Multistage leveling structure of assembled wallboard Active CN215889130U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121619826.8U CN215889130U (en) 2021-07-16 2021-07-16 Multistage leveling structure of assembled wallboard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121619826.8U CN215889130U (en) 2021-07-16 2021-07-16 Multistage leveling structure of assembled wallboard

Publications (1)

Publication Number Publication Date
CN215889130U true CN215889130U (en) 2022-02-22

Family

ID=80343902

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121619826.8U Active CN215889130U (en) 2021-07-16 2021-07-16 Multistage leveling structure of assembled wallboard

Country Status (1)

Country Link
CN (1) CN215889130U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113417429A (en) * 2021-07-16 2021-09-21 浙江亚厦装饰股份有限公司 Multistage leveling structure of assembled wallboard and use method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113417429A (en) * 2021-07-16 2021-09-21 浙江亚厦装饰股份有限公司 Multistage leveling structure of assembled wallboard and use method

Similar Documents

Publication Publication Date Title
CN215889130U (en) Multistage leveling structure of assembled wallboard
CN211714436U (en) Interior decoration wallboard assembly
CN113417429A (en) Multistage leveling structure of assembled wallboard and use method
CN110409741A (en) Level keel and leveling skeleton
CN110388017A (en) A kind of decorative exterior wall dried hanging hang structure and its installation method
CN113417428A (en) Multidirectional leveling module of assembled wallboard and installation method
CN207873720U (en) Machining center Multifunctional combined fixture
CN215889129U (en) Multidirectional leveling module of assembled wallboard
CN215889131U (en) Rotation leveling structure of assembled wallboard
CN216076009U (en) Base layer structure with adjustable space
CN208430734U (en) For hanging the metal structure shell system of substantially furring tile or inorganic decorative board
CN110778055A (en) Leveling mounting structure of assembled wall keel
CN112922252A (en) Spacing-adjustable base layer structure and installation method
CN113417439B (en) Bolt skirting line of floor frame air conditioner and mounting method thereof
CN110042968A (en) A kind of hanging leveling component and side top lifting mould group
CN211372183U (en) Solar street lamp that direction adjustable low pressure control charges
CN211949368U (en) Portable wall fossil fragments leveling fixed component
CN208955981U (en) A kind of fixed bracket of solar photovoltaic electric power
CN207687872U (en) A kind of wall lamp
CN108678261B (en) Assembled fitment furred ceiling
CN219493533U (en) Adjusting component of laser module
CN111502163A (en) Wall leveling device and wall assembly
CN205834796U (en) Swing arm fixture
CN221763408U (en) Aluminum plate curtain wall brightening lamp trough mounting structure
CN215826945U (en) Movable inclined ladder for ship sectional construction

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant