CN110258756B - Floor drain with adjustable building drainage - Google Patents

Floor drain with adjustable building drainage Download PDF

Info

Publication number
CN110258756B
CN110258756B CN201910555088.6A CN201910555088A CN110258756B CN 110258756 B CN110258756 B CN 110258756B CN 201910555088 A CN201910555088 A CN 201910555088A CN 110258756 B CN110258756 B CN 110258756B
Authority
CN
China
Prior art keywords
silica gel
groove
panel
floor drain
arc
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.)
Expired - Fee Related
Application number
CN201910555088.6A
Other languages
Chinese (zh)
Other versions
CN110258756A (en
Inventor
邓英华
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.)
Xian International University
Original Assignee
Xian International University
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 Xian International University filed Critical Xian International University
Priority to CN201910555088.6A priority Critical patent/CN110258756B/en
Publication of CN110258756A publication Critical patent/CN110258756A/en
Application granted granted Critical
Publication of CN110258756B publication Critical patent/CN110258756B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/04Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/0407Floor drains for indoor use
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/04Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/041Accessories therefor
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/04Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/06Gully gratings
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/14Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/04Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F2005/0412Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps with means for adjusting their position with respect to the surrounding surface
    • E03F2005/0413Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps with means for adjusting their position with respect to the surrounding surface for height adjustment

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sink And Installation For Waste Water (AREA)
  • Floor Finish (AREA)

Abstract

The invention relates to an adjustable floor drain for building drainage, which relates to the technical field of drainage equipment.A curved ring is fixed between the front side wall and the rear side wall of a water leakage hole arranged in a cover plate and close to the position of a circle center, a circular ring is movably sleeved on the curved ring, each circular ring is connected with a partition wire, the outer end of each partition wire is movably inserted in a curved groove arranged in the outer circular arc of the water leakage hole, a plurality of partition wires in the same water leakage hole and the circular ring connected with the partition wires are movably arranged in partition wire placing grooves, and the partition wire placing grooves are arranged in one side wall of the water leakage hole; the filament-isolating placing groove is communicated with the arc-shaped groove. The floor drain mounting groove can be used for adjusting the mounting height according to the floor drain mounting groove reserved on the building ground, meanwhile, the sealing performance between the periphery of the floor drain and the building ground can be increased, the application range of the floor drain is greatly enlarged, the building construction efficiency is improved, and the practicability is stronger.

Description

Floor drain with adjustable building drainage
Technical Field
The invention relates to the technical field of drainage equipment, in particular to a building drainage adjustable floor drain.
Background
The floor drain is an important interface for connecting a drainage pipeline system and the indoor ground, is an important part of a drainage system in a house, has the performance which directly influences the quality of indoor air, and is very important for controlling peculiar smell in a bathroom.
The panel of the current floor drain is processed and formed according to a processing template, and the size of the panel is fixed and unchangeable. Some floor drain mounting grooves reserved on the building ground have deep depth, and after the floor drain is mounted, the building ground and a panel of the floor drain cannot be effectively ensured to be positioned on the same plane. Some adopt to utilize the concrete with the floor drain mounting groove to thicken, but because behind the concrete thickening, need air-dry the installation procedure that can carry out next one for a certain time, this has delayed the installation time of floor drain undoubtedly, reduces the construction progress, awaits urgent need to improve.
Disclosure of Invention
The invention aims to overcome the defects and shortcomings of the prior art, and provides a reasonably designed building drainage adjustable floor drain, which can adjust the installation height according to a floor drain installation groove reserved on the building ground, can increase the sealing property between the periphery of the floor drain and the building ground, greatly increases the application range of the floor drain, improves the building construction efficiency, and has stronger practicability.
In order to achieve the purpose, the invention adopts the following technical scheme: it comprises a cover plate, a panel, a sinking type drainage groove, a sundry filter screen, an inner core and an outer core; the cover plate is covered in the opening in the panel, the opening in the panel is penetrated and integrally formed with a sinking type drainage groove, the bottom of the sinking type drainage groove is connected with an inner core, the inlet end of the inner core is provided with a sundry filter screen in a erecting mode, and the inner core is inserted in the outer core; the device also comprises a fixing screw, a height adjusting silica gel pad, a separation wire, an arc-shaped ring and a circular ring; the panel is fixedly connected with the upper part of the height adjusting silica gel pad, and the height adjusting silica gel pad is sleeved outside the sunken drainage groove; the four corners of the panel are screwed with fixing screws in internal threads, and the fixing screws are arranged in the height adjusting silica gel pad; an arc-shaped ring is fixed between the front side wall and the rear side wall of the water leakage hole formed in the cover plate and is close to the circle center, a circular ring is movably sleeved on the arc-shaped ring, each circular ring is connected with a partition wire, the outer end of each partition wire is movably inserted into an arc-shaped groove formed in the outer circular arc of the water leakage hole, a plurality of partition wires in the same water leakage hole and the circular ring connected with the partition wires are movably arranged in partition wire placing grooves, and the partition wire placing grooves are formed in one side wall of the water leakage hole; the filament-isolating placing groove is communicated with the arc-shaped groove.
Furthermore, the upper surface of height adjustment silica gel pad seted up the panel caulking groove, the panel inlays to be established and fixes in the panel caulking groove.
Further, the outer end cover of filament be equipped with the silica gel cover, the outer wall of this silica gel cover is contradicted with the cell wall of arc wall and is set up.
Furthermore, the opening surface of the filament placing groove is provided with silica gel sealing strips in an up-and-down symmetrical manner, and adjacent edges of the two silica gel sealing strips in the up-and-down symmetrical manner are movably arranged in a contact manner.
Further, the outer wall of the height adjusting silica gel pad is of a sawtooth-shaped or wavy structure.
Furthermore, the peripheral wall cover of apron be equipped with the rubber ring, the outer wall of rubber ring is contradicted with the opening inner wall in the apron and is set up, and the outer wall of rubber ring is cockscomb structure or wavy structure.
Furthermore, a plurality of salient points are integrally formed on the outer wall of the filament.
Furthermore, the bottom edge of the height adjusting silica gel pad is fixed with a metal washer, and the lower end of the fixing screw penetrates through the panel, the height adjusting silica gel pad and the metal washer in sequence and then is screwed and fixed with the nut.
The working principle of the invention is as follows: when the floor drain mounting groove is installed, the lower edge of a height adjusting silica gel pad sleeved and fixed outside the panel is abutted against the groove surface of the floor drain mounting groove on the building ground, the panel is pressed downwards, after the upper surface of the panel is flush with the building ground, the panel is fixedly connected with the groove surface of the floor drain mounting groove in the building ground in a threaded manner by using a fixing screw, and the height adjusting silica gel pad has certain elasticity, so that the floor drain mounting groove can be adjusted even if the groove surface of the floor drain mounting groove is uneven, and meanwhile, the elasticity of the height adjusting silica gel pad can meet the adjustment of the mounting depth within a certain depth range; after the panel installation is good, take out the apron of lid establishing in the panel, stir different quantity's the silk that separates manually as required, make it fix a position in the hole that leaks for separate the drainage space in the hole that leaks, reach the effect of adjusting the hole size that leaks.
After adopting the structure, the invention has the beneficial effects that: the invention provides a building drainage adjustable floor drain which can adjust the installation height according to a floor drain installation groove reserved on the building ground, can increase the sealing property between the periphery of the floor drain and the building ground, greatly increases the application range of the floor drain, improves the building construction efficiency and has stronger practicability.
Description of the drawings:
fig. 1 is an exploded view of the present invention.
Fig. 2 is a cross-sectional view of the height adjusting silicone pad of the present invention.
Fig. 3 is a front view of the cover plate of the present invention.
Fig. 4 is a sectional view taken along line B-B in fig. 3.
Fig. 5 is a sectional view taken along line C-C in fig. 3.
FIG. 6 is a front view of a cover plate in accordance with one embodiment.
FIG. 7 is a schematic view of the filament and the arc ring of the present invention.
Fig. 8 is an enlarged view of a portion a in fig. 7.
Fig. 9 is a cross-sectional view of a rubber ring in an embodiment.
Fig. 10 is a sectional view of a height-adjusting silicone pad according to a second embodiment.
Description of reference numerals:
the water-saving drainage device comprises a cover plate 1, water leakage holes 1-1, a partition wire placing groove 1-2, an arc-shaped groove 1-3, a panel 2, a sunken drainage groove 3, fixing screws 4, a height adjusting silica gel pad 5, a panel embedding groove 5-1, a sundry filter screen 6, an inner core 7, an outer core 8, partition wires 9, an arc-shaped ring 10, a circular ring 11, a silica gel sleeve 12, a silica gel seal 13, a rubber ring 14, salient points 15, a metal washer 16 and nuts 17.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1 to 9, the following technical solutions are adopted in the present embodiment: the device comprises a cover plate 1, a panel 2, a sunken drainage tank 3, a sundry filter screen 6, an inner core 7 and an outer core 8; the cover plate 1 is covered in an opening in the panel 2, the peripheral wall of the cover plate 1 is sleeved with a rubber ring 14, the outer wall of the rubber ring 14 is abutted to the inner wall of the opening in the cover plate 1, the outer wall of the rubber ring 14 is serrated (the stability of the cover plate 1 in the panel 2 is improved), the opening in the panel 2 is penetrated and integrally formed with a sunken drainage groove 3, the bottom of the sunken drainage groove 3 is connected with an inner core 7, an inlet end of the inner core 7 is erected with a sundry filter screen 6, and the inner core 7 is inserted in an outer core 8; the device also comprises a fixing screw 4, a height adjusting silica gel pad 5, a filament 9, an arc-shaped ring 10 and a circular ring 11; the outer wall of the height adjusting silica gel pad 5 is of a zigzag structure, a panel caulking groove 5-1 is formed in the upper surface of the height adjusting silica gel pad 5, the panel 2 is embedded and fixed in the panel caulking groove 5-1 by using waterproof sealant for gluing, and the height adjusting silica gel pad 5 is sleeved outside the sunken drainage groove 3; the four corners of the panel 2 are screwed with fixing screws 4, the fixing screws 4 are arranged in the height adjusting silica gel pad 5, and the panel 2 is fixed on the floor drain mounting groove surface in the building ground in a threaded connection mode through the fixing screws 4; an arc-shaped ring 10 is welded and fixed between the front side wall and the rear side wall of the water leakage hole 1-1 arranged in the cover plate 1, a ring 11 is movably sleeved on the arc-shaped ring 10, a separation filament 9 is welded and fixed on each ring 11, a plurality of salient points 15 are integrally formed on the outer wall of the separation filament 9 and used for increasing the separation effect of the separation filament 9 in the water filtering process, impurities carried in water can be effectively hooked, such as hair, banded jewelry and the like, the outer end of the separation filament 9 is sleeved with a silica gel sleeve 12, the silica gel sleeve 12 is movably inserted in the arc-shaped groove 1-3 arranged in the outer arc of the water leakage hole 1-1, the outer wall of the silica gel sleeve 12 is abutted against the groove wall of the arc-shaped groove 1-3, three separation filaments 9 in the same water leakage hole 1-1 and the ring 11 connected with the separation filaments 9 are movably arranged in the separation filament placing groove 1-2, the filament-isolating placing groove 1-2 is arranged in one side wall of the water leakage hole 1-1; the filament placing groove 1-2 is communicated with the arc-shaped groove 1-3; the opening surfaces of the filament placing grooves 1-2 are symmetrically provided with silica gel sealing strips 13, the adjacent edges of the two silica gel sealing strips 13 which are symmetrically arranged up and down are movably arranged in a contact manner, and the unused filament 9 is isolated to a certain extent.
The working principle of the specific embodiment is as follows: when the floor drain mounting groove is installed, the lower edge of a height adjusting silica gel pad 5 sleeved and fixed outside a panel 2 abuts against the groove surface of the floor drain mounting groove on the building ground, the panel 2 is pressed downwards, the upper surface of the panel 2 is leveled with the building ground, and the panel 2 is riveted and fixed on the groove surface of the floor drain mounting groove in the building ground by using a fixing screw 4, and the height adjusting silica gel pad 5 has certain elasticity, so that the floor drain mounting groove can be adjusted even if the groove surface of the floor drain mounting groove is uneven, and meanwhile, the elasticity of the height adjusting silica gel pad 5 can meet the adjustment of the mounting depth within a certain depth range; after the panel 2 is installed, the cover plate 1 covered in the panel 2 is taken out, different numbers of the partition wires 9 are manually stirred according to requirements to be positioned in the water leakage holes 1-1 for separating the water filtering space of the water leakage holes 1-1, and the effect of adjusting the sizes of the water leakage holes 1-1 is achieved.
After adopting above-mentioned structure, this embodiment's beneficial effect is as follows:
1. the arrangement of the height adjusting silica gel pad 5 can meet the installation of floor drain installation grooves with different depths, and meanwhile, the installation groove can be suitable for floor drain installation grooves with uneven bottom surfaces;
2. the height adjusting silica gel pad 5 is arranged, and the outer wall of the height adjusting silica gel pad is in abutting arrangement with the inner wall of the floor drain mounting groove, so that the overall sealing effect can be improved;
3. the different number of the partition wires 9 are shifted to divide the space size of the water leakage holes 1-1, so that the purpose of increasing or reducing the water leakage holes 1-1 is achieved.
The second embodiment is as follows:
referring to fig. 10, the present embodiment differs from the first embodiment in that: the bottom edge of the height adjusting silica gel pad 5 is fixed with a metal washer 16, the lower end of the fixing screw 4 penetrates through the panel 2, the height adjusting silica gel pad 5 and the metal washer 16 in sequence and then is screwed and fixed with a nut 17, the rest parts and the connection relation are the same as those of the specific embodiment, the specific embodiment rotates the nut 17 according to the floor drain mounting groove with the measured depth to compress or restore the height of the height adjusting silica gel pad 5, then the panel 2 and the height adjusting silica gel pad 5 are placed into the floor drain mounting groove together, the fixing screw 4 penetrating through the lower part of the nut 17 is screwed and fixed with the nut pre-buried in the reserved hole, and then the positioning of the panel 2 can be completed.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims (2)

1. An adjustable floor drain for building drainage comprises a cover plate (1), a panel (2), a sinking type drainage groove (3), a sundry filter screen (6), an inner core (7) and an outer core (8); the cover plate (1) is covered in an opening in the panel (2), the opening in the panel (2) is penetrated and integrally formed with a sunken drainage groove (3), the bottom of the sunken drainage groove (3) is connected with an inner core (7), an inlet end of the inner core (7) is erected with a sundry filter screen (6), and the inner core (7) is inserted in an outer core (8); the method is characterized in that:
the device also comprises a fixing screw (4), a height adjusting silica gel pad (5), a filament (9), an arc-shaped ring (10) and a circular ring (11); the outer wall of the height adjusting silica gel pad (5) is of a sawtooth-shaped or wavy structure; the panel (2) is fixedly connected with the upper part of the height adjusting silica gel pad (5), a panel embedding groove (5-1) is formed in the upper surface of the height adjusting silica gel pad (5), the panel (2) is embedded and fixed in the panel embedding groove (5-1), and the height adjusting silica gel pad (5) is sleeved outside the sunken drainage groove (3); the four corners of the panel (2) are screwed with fixing screws (4) in internal threads, and the fixing screws (4) are arranged in the height adjusting silica gel pad (5); the water leakage hole sealing structure is characterized in that an arc-shaped ring (10) is fixed at a position close to the circle center between the front side wall and the rear side wall in a water leakage hole (1-1) formed in the cover plate (1), a circular ring (11) is movably sleeved on the arc-shaped ring (10), a separation filament (9) is connected to each circular ring (11), the outer end of the separation filament (9) is movably inserted into an arc-shaped groove (1-3) formed in the outer circular arc of the water leakage hole (1-1), a plurality of salient points (15) are integrally formed on the outer wall of the separation filament (9), a silica gel sleeve (12) is sleeved on the outer end of the separation filament (9), the outer wall of the silica gel sleeve (12) is abutted to the groove wall of the arc-shaped groove (1-3), the plurality of separation filaments (9) in the same water leakage hole (1-1) and the circular ring (11) connected with the separation filaments (9) are movably arranged in the separation filament placing groove (1-2), and the separation filament placing groove (1-2) is arranged in (ii) a The filament-isolating placing groove (1-2) is communicated with the arc-shaped groove (1-3); the opening surface of the filament separating placing groove (1-2) is symmetrically provided with silica gel sealing strips (13) up and down, and the adjacent edges of the two silica gel sealing strips (13) which are symmetrically arranged up and down are movably contacted.
2. The floor drain with adjustable building drainage of claim 1, characterized in that: the bottom edge of height adjustment silica gel pad (5) be fixed with metal packing ring (16), the lower extreme of set screw (4) pass panel (2), height adjustment silica gel pad (5) and metal packing ring (16) in proper order after, connect with nut (17) soon fixedly.
CN201910555088.6A 2019-06-25 2019-06-25 Floor drain with adjustable building drainage Expired - Fee Related CN110258756B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910555088.6A CN110258756B (en) 2019-06-25 2019-06-25 Floor drain with adjustable building drainage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910555088.6A CN110258756B (en) 2019-06-25 2019-06-25 Floor drain with adjustable building drainage

Publications (2)

Publication Number Publication Date
CN110258756A CN110258756A (en) 2019-09-20
CN110258756B true CN110258756B (en) 2020-10-16

Family

ID=67921384

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910555088.6A Expired - Fee Related CN110258756B (en) 2019-06-25 2019-06-25 Floor drain with adjustable building drainage

Country Status (1)

Country Link
CN (1) CN110258756B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110835946B (en) * 2019-11-11 2021-03-16 衡阳市业通塑胶有限公司 Pipeline water accumulator
CN111236394B (en) * 2020-01-06 2021-02-12 三箭建设工程集团有限公司 Floor drain construction connecting piece and construction method thereof

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE508640C2 (en) * 1996-04-30 1998-10-26 Jan Andersson Sieve for floor well
JP2007217938A (en) * 2006-02-16 2007-08-30 Naomasa Nitta Height adjustable bolt
CN204081050U (en) * 2014-10-29 2015-01-07 张勇 A kind of interior decoration is with except sending a manuscript to the compositor water cover
CN204826169U (en) * 2015-07-02 2015-12-02 常州德日机械有限公司 Take floor drain lid of bead plate rail
CN205391864U (en) * 2016-02-26 2016-07-27 响水县智诚知识产权信息服务有限公司 Filter screen with adjustable filtration pore size
CN205392004U (en) * 2016-02-26 2016-07-27 响水县智诚知识产权信息服务有限公司 Filter unit of adjustable filtration pore size
CN206752636U (en) * 2017-03-28 2017-12-15 瑞安市金欧水暖器材有限公司 A kind of floor drain of flow automatic regulation
CN206655306U (en) * 2017-04-20 2017-11-21 佛山市南海区键源五金制品有限公司 Floor drain
CN207633495U (en) * 2017-12-13 2018-07-20 台州市金豪利洁具有限公司 A kind of floor drain embedded box
CN207348190U (en) * 2017-12-19 2018-05-11 盐城三山道路设施有限公司 A kind of anti-clogging cast downspout strainer
CN108252393B (en) * 2017-12-19 2020-11-06 温州思鸣达工业产品设计有限公司 Adjustable road side rainwater drainage grate and mounting method
CN208553344U (en) * 2018-07-13 2019-03-01 无锡市科晶环保塑胶科技有限公司 One kind using flase floor for water tower filtering

Also Published As

Publication number Publication date
CN110258756A (en) 2019-09-20

Similar Documents

Publication Publication Date Title
CN110258756B (en) Floor drain with adjustable building drainage
CN207110006U (en) A kind of odour-proof floor drain
CN210723881U (en) Mesh-type high-heat-dissipation buried landscape box substation
CN211006925U (en) Assembled bathroom squatting pot mounting structure
CN210343163U (en) Bridge cut-off aluminium door and window with drainage effect
CN206941765U (en) A kind of floor drain of automatically cleaning and anti-peculiar smell
CN205369504U (en) Ponding device is prevented to indoor formula bathroom that sinks
CN205690263U (en) Self-cleaning type Solar lamp
CN216948807U (en) Elastic sheet positioning type waterproof grid connecting and positioning structure
CN219528189U (en) Top drainage structure for building
CN211483578U (en) Quartz stone plate surface with anti-seepage structure for bowl washing tank
CN221177634U (en) Novel frame and photovoltaic module
CN213682878U (en) Building roof greening auxiliary drainage structure
CN220469060U (en) Pre-buried floor drain body
CN216360798U (en) Indoor bathroom sealing waterproof structure
CN216475456U (en) Hair peculiar smell prevention filter screen for floor drain
CN217267943U (en) Food-grade clean drainage floor drain
CN214834398U (en) Assembled bathroom ground watertight fittings
CN217557114U (en) Drainage pipe for municipal building with filtering capability
CN211898675U (en) Can collect environmental protection building structure of rainwater
CN216640826U (en) Normally closed floor drain
CN109167564A (en) A kind of solar energy photovoltaic panel with drain function
CN215826515U (en) DC fills waterproof construction for electric pile
CN218278110U (en) Adjustable spraying machine
CN220750278U (en) Dehumidifier drainage device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20201016

Termination date: 20210625