CN208391742U - A kind of convenient grinding tool of lightweight diamond - Google Patents

A kind of convenient grinding tool of lightweight diamond Download PDF

Info

Publication number
CN208391742U
CN208391742U CN201721894311.2U CN201721894311U CN208391742U CN 208391742 U CN208391742 U CN 208391742U CN 201721894311 U CN201721894311 U CN 201721894311U CN 208391742 U CN208391742 U CN 208391742U
Authority
CN
China
Prior art keywords
groove
connecting plate
flushing machine
fixedly connected
wall
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
CN201721894311.2U
Other languages
Chinese (zh)
Inventor
张源源
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.)
Zhengzhou Network Aware Exchange Mdt Infotech Ltd
Original Assignee
Zhengzhou Network Aware Exchange Mdt Infotech 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 Zhengzhou Network Aware Exchange Mdt Infotech Ltd filed Critical Zhengzhou Network Aware Exchange Mdt Infotech Ltd
Priority to CN201721894311.2U priority Critical patent/CN208391742U/en
Application granted granted Critical
Publication of CN208391742U publication Critical patent/CN208391742U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

The utility model discloses a kind of convenient grinding tools of lightweight diamond, including flushing machine, top handle, hand-held handle and workpiece polishing mechanism, the top handle is fixedly connected on the top of flushing machine, the hand-held handle is fixedly connected with the side of flushing machine, the workpiece polishing mechanism is fixedly connected with the bottom of flushing machine, the side of the flushing machine and workpiece polishing mechanism opens up fluted, the groove of the flushing machine and the groove of workpiece polishing mechanism are connected to each other, the inner wall of the groove is connected with connecting plate, the lower rotation of the connecting plate is connected with folding retractable plate, the side of the connecting plate offers accommodating groove.For the utility model by being used cooperatively between the structures such as above-mentioned, equipment can be operated after folding retractable plate and connecting plate by realizing operator, and being used cooperatively for folding retractable plate and connecting plate has effectively blocked the water flow of emery wheel scattering, using effect is more preferable.

Description

A kind of convenient grinding tool of lightweight diamond
Technical field
The utility model relates to building stones grinding apparatus technical field, the convenient grinding work of specially a kind of lightweight diamond Tool.
Background technique
No matter lithotome or synthesis stone, general surface is all relatively rough, and needing to polish, it is coloured and dazzling just to obtain Effect;Current most of small-sized sanders are because of capacity issue, it is difficult to realize that water flow is rinsed, therefore efficiency is poor.It is beating During mill, diamond is that oneself knows the highest material of hardness in material, thus diamond cutting tool is various hard as processing The indispensable material of material;Diamond cutting tool is to mix metal powder and synthetic diamond particles, it is repressed and It is sintered;With the quickening of urbanization process, infrastructure scale constantly expands, and house and road development & construction are to diamond Tool application provides broad mass market, however, traditional product diamond-impregnated wheel mainly uses ferrous material for abrasive wheel substrate, by Buddha's warrior attendant Stone cutter head is welded on matrix surface, and by fourth irony emery wheel itself weight, Energy in use is big, and operation difficulty is high, in addition, iron-based emery wheel Welding material is at high cost, and subsequent weldering spot is difficult to handle, and cost is caused to dramatically increase.Chinese patent (notification number: CN205111518U a kind of portable building stones grinding apparatus) is disclosed, including water storage cabinet, wash tub pipe, rotating electric machine, hand-held Handle, top handle, shaft and diamond-impregnated wheel;The water storage cabinet is arranged at the top position of rotating electric machine, in water storage The left side of cabinet is provided with wash tub pipe, and the right side of water storage cabinet is equipped with hand-held handle, and the top position of water storage cabinet is set There is top handle;The rotating electric machine is drivingly connected shaft, and shaft connects diamond-impregnated wheel, wherein the end of shaft and Buddha's warrior attendant The center of stone mill wheel is connected;The diamond-impregnated wheel includes aluminum substrate and diamond segment, meanwhile, the center of aluminum substrate It is provided with the keyway with shaft cooperation;The aluminum substrate includes grinding mounting surface and department of assembly;The department of assembly is located at grinding peace Dress face end;The utility model is small in size, portable, improves efficiency, work quality, reduces finishing operations, reduce cost, makes It is long with the service life, efficient and light weight, flexible operation.But during the utility model flushing machine rinses workpiece polishing mechanism, emery wheel Rotation the moisture of grinding wheel surface can be scattered everywhere in the form of parabolical, to be splashed on the body of operator, use Effect is undesirable, needs to make improvements.
Utility model content
The purpose of this utility model is to provide a kind of convenient grinding tools of lightweight diamond, and having operator can To operate equipment after folding retractable plate and connecting plate, mill has effectively been blocked in being used cooperatively for folding retractable plate and connecting plate The water flow of scattering is taken turns, the more preferable advantage of using effect, during solving flushing machine to workpiece polishing mechanism flushing, emery wheel turns It is dynamic the moisture of grinding wheel surface to be sputtered everywhere in the form of parabolical, to be splashed on the body of operator, using effect Undesirable problem.
To achieve the above object, the utility model provides the following technical solutions: a kind of convenient grinding work of lightweight diamond Tool, including flushing machine, top handle, hand-held handle and workpiece polishing mechanism, the top handle are fixedly connected on flushing machine Top, the hand-held handle are fixedly connected with the side of flushing machine, and the workpiece polishing mechanism is fixedly connected with the bottom of flushing machine The side of portion, the flushing machine and workpiece polishing mechanism opens up fluted, the groove of the flushing machine and the groove of workpiece polishing mechanism It is connected to each other.
The inner wall of the groove is connected with connecting plate, and the lower rotation of the connecting plate is connected with folding retractable plate, The side of the connecting plate offers accommodating groove, and the folding retractable plate is connected by the accommodating groove of connecting plate and connecting plate activity It connecing, the front on the folding retractable plate at the top of it offers through-hole, and the inner wall of the through-hole is fixedly connected with shaft one, The inner wall of the connecting plate groove offers turn trough, and the shaft one is rotatablely connected by the turn trough and connecting plate of connecting plate, institute It states the surface pivots in shaft one close to one end and is connected with damped ring, the outer wall of the damped ring and the inner wall of connecting plate turn trough It is fixedly connected, the front on the connecting plate at the top of it offers through-hole, and the inner wall of the through-hole is fixedly connected with shaft Two, the surface in the shaft two close to one end is fixedly connected with fixed block, close to the front of one end in the shaft two It is also fixedly connected with trapezoid block, the inner wall of the flushing machine groove offers little groove, and the shaft two-way crosses flushing machine Little groove and flushing machine be rotatablely connected, the inner wall of the little groove is fixedly connected with limited block, the top of the fixed block It is connect with the surface activity of limited block, the inner wall of the little groove is connected with movable block, the side of the trapezoid block and work The side of motion block is flexibly connected, and the inner wall of the little groove offers spring groove, and the inner wall of the spring groove is fixedly connected with multiple Position spring, the top of the reset spring are fixedly connected with the bottom of movable block, the spring that the movable block passes through flushing machine Slot is flexibly connected with flushing machine.
Preferably, the side on the connecting plate close to its bottom is fixedly connected with drawing frame, and draws the surface of frame is fixed to connect It is connected to non-slip rubber set.
Preferably, the quantity of the damped ring is two, and two damped rings are using the transversal centerline of shaft one as axis pair Claim the both ends for being distributed in shaft one.
Preferably, the inclined-plane of the trapezoid block is equal with the gradient on movable block inclined-plane, and the surface of trapezoid block be provided with it is anti- Draw runner line.
Preferably, one end of the shaft two is rotatably connected to bearing, and the outer wall of bearing is fixedly connected on flushing machine In the little groove of groove inner wall.
Compared with prior art, the beneficial effects of the utility model are as follows:
The utility model passes through setting connecting plate, folding retractable plate, shaft one, damped ring, shaft two, fixed block, trapezoidal Block, limited block, movable block, reset spring and drawing frame when needing to rinse workpiece polishing mechanism, pull frame, draw the movement of frame to drive and connect Fishplate bar is rotated around shaft two, the inclined-plane of the inclined-plane Compressive activities block of trapezoid block in the course of rotation of shaft two, so that movable Block enters in corresponding spring groove while compression reseting spring, and when trapezoid block turns to the movable block other end, movable block is multiple Position spring under the action of be ejected, the inclined-plane of the movable block other side again with the contact of incline plane of trapezoid block, at this time in shaft two Fixed block is also abutted with limited block, and limited block cooperates the use of movable block, so that the position of shaft two has obtained certain fixation, And then the position for realizing connecting plate is fixed, it, will folding from the accommodating groove of connecting plate side after the position of connecting plate is fixed Folded expansion plate produces, and the pars contractilis of folding retractable plate is contraction state before producing, and draws remaining constriction after producing Out, shaft one and damped ring are used cooperatively, so that the position of folding retractable plate rotation has a certain self-locking function, are conducive to The folding and unfolding of folding retractable plate.
In conclusion solving what flushing machine rinsed workpiece polishing mechanism by being used cooperatively between the structures such as above-mentioned In the process, the rotation of emery wheel can be sputtered everywhere the moisture of grinding wheel surface in the form of parabolical, to be splashed to operator Body on, the undesirable problem of using effect, equipment can be operated after folding retractable plate and connecting plate by realizing operator, Folding retractable plate and connecting plate are used cooperatively, and have effectively blocked the water flow of emery wheel scattering, and using effect is more preferable.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model;
Fig. 2 is the utility model connecting plate and folding retractable plate side structure schematic diagram;
Fig. 3 connects partial structure sectional view with folding retractable plate for the utility model connecting plate;
Fig. 4 is the utility model flushing machine and workpiece polishing mechanism side structure schematic diagram;
Fig. 5 is the utility model flushing machine partial structure sectional view;
Fig. 6 is that the utility model connecting plate withdraws flushing machine schematic diagram.
In figure: 1- flushing machine, 2- top handle, 3- hold handle, 4- workpiece polishing mechanism, 5- connecting plate, 6- folding retractable Plate, 7- shaft one, 8- damped ring, 9- shaft two, 10- fixed block, 11- trapezoid block, 12- limited block, 13- movable block, 14- reset Spring, 15- draw frame.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1 to 6 is please referred to, the utility model provides a kind of technical solution: a kind of convenient grinding tool of lightweight diamond, Including flushing machine 1, top handle 2, hand-held handle 3 and workpiece polishing mechanism 4, flushing machine 1 includes water tank, wash tub pipe and stream Adjustable valve, water tank are used to supply water to wash tub pipe, by the size of Flux Valve Control flushing water in-pipe flow, rinse The water outlet of water pipe is corresponding with diamond-impregnated wheel, and top handle 2 is fixedly connected on the top of flushing machine 1, and it is solid to hold handle 3 Surely it is connected with the side of flushing machine 1, top handle 2 and hand-held handle 3 are used cooperatively, so that the process of operation equipment is more Convenient, workpiece polishing mechanism 4 is fixedly connected with the bottom of flushing machine 1, and workpiece polishing mechanism 4 includes rotating electric machine, shaft and Buddha's warrior attendant stone mill Wheel, the rotation of rotating electric machine drive the rotation of diamond-impregnated wheel by shaft, and building stones, washer are cut in the rotation of diamond-impregnated wheel The side of structure 1 and workpiece polishing mechanism 4 opens up fluted, and the groove of the groove and workpiece polishing mechanism 4 of flushing machine 1 is connected to each other.
The inner wall of groove is connected with connecting plate 5, and connecting plate 5 retracts into the groove of flushing machine 1 and workpiece polishing mechanism 4 In, normal use is not interfered, is fixedly connected on connecting plate 5 close to the side of its bottom and draws frame 15, and draw the surface of frame 15 solid Surely it is connected with non-slip rubber set, draws the setting of frame 15 so that connecting plate 5 is conveniently drawn out, the setting of non-slip rubber set avoids pulling The phenomenon that having skidded during drawing frame 15, the lower rotation of connecting plate 5 is connected with folding retractable plate 6, the length of accommodating groove Greater than the length of folding retractable plate 6, facilitate and folding retractable plate 6 is stirred into taking-up, folding retractable plate 6 divides for pars contractilis and socket The telescopic section in portion, folding retractable plate 6 cannot be completely into the socket part of folding retractable plate 6, and the side of connecting plate 5 offers Accommodating groove, folding retractable plate 6 are flexibly connected by the accommodating groove of connecting plate 5 with connecting plate 5, close to its top on folding retractable plate 6 The front in portion offers through-hole, and the inner wall of through-hole is fixedly connected with shaft 1, and the inner wall of 5 groove of connecting plate offers turn trough, turns Axis 1 is rotatablely connected by the turn trough and connecting plate 5 of connecting plate 5, and the surface pivots in shaft 1 close to one end are connected with resistance Buddhist nun's circle 8, shaft 1 and damped ring 8 are used cooperatively, so that the position that folding retractable plate 6 rotates has a certain self-locking function, Be conducive to the folding and unfolding of folding retractable plate 6, the quantity of damped ring 8 is two, and two damped rings 8 are with the transversal centerline of shaft 1 The both ends of shaft 1 are distributed in for axisymmetrical, the setting of two damped rings 8 is so that the self-locking function of folding retractable plate 6 is more steady Fixed, the outer wall of damped ring 8 is fixedly connected with the inner wall of 5 turn trough of connecting plate, and the front on connecting plate 5 at the top of it offers logical Hole, the inner wall of through-hole are fixedly connected with shaft 29, and the rotation that the setting of shaft 29 enables connecting plate 5 stable is then received It is retracted in the groove of flushing machine 1 and workpiece polishing mechanism 4, one end of shaft 29 is rotatably connected to bearing, and the outer wall of bearing is solid Surely it is connected in the little groove of 1 groove inner wall of flushing machine, so that the rotation of shaft 29 is more stable, rotation is imitated for the setting of bearing Fruit is more preferable, and the surface in shaft 29 close to one end is fixedly connected with fixed block 10, the front of close one end in shaft 29 It is also fixedly connected with trapezoid block 11, the inclined-plane of trapezoid block 11 is equal with the gradient on 13 inclined-plane of movable block, and the surface of trapezoid block 11 It is provided with skid resistance strip, the gradient on 11 inclined-plane of trapezoid block is equal with movable block 13, so that the contact surface on the two inclined-plane increases, cooperation The use of skid resistance strip increases the frictional force of the two contact, is conducive to the fixation of 29 position of shaft, 1 groove of flushing machine Inner wall offers little groove, and shaft 29 is rotatablely connected by the little groove and flushing machine 1 of flushing machine 1, the inner wall of little groove It is fixedly connected with limited block 12, the top of fixed block 10 is connect with the surface activity of limited block 12, and the inner wall activity of little groove connects It is connected to movable block 13, fixed block 10 and trapezoid block 11 limit position by movable block 13 and limited block 12, then make shaft 29 It cannot easily rotate, so that the position of connecting plate 5 has obtained certain fixation, connecting plate 5 retracts into flushing machine 1 and beats When in the groove of grinding machine structure 4, movable block 13 resists trapezoid block 11, and the placement for enabling connecting plate 5 stable is in a groove, trapezoidal The side of block 11 is flexibly connected with the side of movable block 13, and the inner wall of little groove offers spring groove, and the inner wall of spring groove is fixed It is connected with reset spring 14, reset spring 14 provides restoring force to movable block 13, and movable block 13 is popped up and trapezoid block 11 contacts, the top of reset spring 14 are fixedly connected with the bottom of movable block 13, and movable block 13 passes through the spring groove of flushing machine 1 It is flexibly connected with flushing machine 1.
Working principle: the convenient grinding tool of the lightweight diamond is pulled and is drawn in use, when needing to rinse workpiece polishing mechanism 4 Frame 15 draws the movement of frame 15 that connecting plate 5 is driven to rotate around shaft 29, the trapezoid block 11 in the course of rotation of shaft 29 it is oblique The inclined-plane of face Compressive activities block 13, so that movable block 13 enters in corresponding spring groove while compression reseting spring 14, when trapezoidal When block 11 turns to 13 other end of movable block, movable block 13 is ejected under the action of reset spring 14,13 other side of movable block The inclined-plane contact of incline plane with trapezoid block 11 again, the fixed block 10 in shaft 29 is also abutted with limited block 12 at this time, limited block The use of 12 cooperation movable blocks 13, so that the position of shaft 29 has obtained certain fixation, and then realizes the position of connecting plate 5 It sets and is fixed, after the position of connecting plate 5 is fixed, folding retractable plate 6 is produced from the accommodating groove of 5 side of connecting plate, is produced The pars contractilis of folding retractable plate 6 is contraction state before, pulls out remaining constriction after producing, shaft 1 and damping Circle 8 is used cooperatively, so that the position that folding retractable plate 6 rotates has a certain self-locking function, is conducive to folding retractable plate 6 Folding and unfolding.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (5)

1. a kind of convenient grinding tool of lightweight diamond, including flushing machine (1), top handle (2), hand-held handle (3) and Workpiece polishing mechanism (4), the top handle (2) are fixedly connected on the top of flushing machine (1), and the hand-held handle (3) is fixed to be connected It is connected to the side of flushing machine (1), the workpiece polishing mechanism (4) is fixedly connected with the bottom of flushing machine (1), it is characterised in that: The side of the flushing machine (1) and workpiece polishing mechanism (4) opens up fluted, the groove and workpiece polishing mechanism of the flushing machine (1) (4) groove is connected to each other;
The inner wall of the groove is connected with connecting plate (5), and the lower rotation of the connecting plate (5) is connected with folding retractable plate (6), the side of the connecting plate (5) offers accommodating groove, the folding retractable plate (6) by the accommodating groove of connecting plate (5) with Connecting plate (5) is flexibly connected, and the front on the folding retractable plate (6) at the top of it offers through-hole, the through-hole it is interior Wall is fixedly connected with shaft one (7), and the inner wall of connecting plate (5) groove offers turn trough, and the shaft one (7) passes through connection The turn trough of plate (5) and connecting plate (5) are rotatablely connected, and the surface pivots on the shaft one (7) close to one end are connected with damping It encloses (8), the outer wall of the damped ring (8) is fixedly connected with the inner wall of connecting plate (5) turn trough, close to it on the connecting plate (5) The front at top offers through-hole, and the inner wall of the through-hole is fixedly connected with shaft two (9), close to it on the shaft two (9) The surface of one end is fixedly connected with fixed block (10), and the front on the shaft two (9) close to one end is also fixedly connected with ladder Shape block (11), the inner wall of flushing machine (1) groove offer little groove, and the shaft two (9) passes through flushing machine (1) Little groove and flushing machine (1) are rotatablely connected, and the inner wall of the little groove is fixedly connected with limited block (12), the fixed block (10) top is connect with the surface activity of limited block (12), and the inner wall of the little groove is connected with movable block (13), institute The side for stating trapezoid block (11) is flexibly connected with the side of movable block (13), and the inner wall of the little groove offers spring groove, institute The inner wall for stating spring groove is fixedly connected with reset spring (14), the top of the reset spring (14) and the bottom of movable block (13) It is fixedly connected, the movable block (13) is flexibly connected by the spring groove of flushing machine (1) with flushing machine (1).
2. a kind of convenient grinding tool of lightweight diamond according to claim 1, it is characterised in that: the connecting plate (5) side on close to its bottom, which is fixedly connected with, draws frame (15), and the surface of frame (15) is drawn to be fixedly connected with non-slip rubber set.
3. a kind of convenient grinding tool of lightweight diamond according to claim 1, it is characterised in that: the damped ring (8) quantity is two, and two damped rings (8) are distributed in shaft one (7) by axisymmetrical of the transversal centerline of shaft one (7) Both ends.
4. a kind of convenient grinding tool of lightweight diamond according to claim 1, it is characterised in that: the trapezoid block (11) inclined-plane is equal with the gradient on movable block (13) inclined-plane, and the surface of trapezoid block (11) is provided with skid resistance strip.
5. a kind of convenient grinding tool of lightweight diamond according to claim 1, it is characterised in that: the shaft two (9) one end is rotatably connected to bearing, and the outer wall of bearing is fixedly connected in the little groove of flushing machine (1) groove inner wall.
CN201721894311.2U 2017-12-29 2017-12-29 A kind of convenient grinding tool of lightweight diamond Expired - Fee Related CN208391742U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721894311.2U CN208391742U (en) 2017-12-29 2017-12-29 A kind of convenient grinding tool of lightweight diamond

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721894311.2U CN208391742U (en) 2017-12-29 2017-12-29 A kind of convenient grinding tool of lightweight diamond

Publications (1)

Publication Number Publication Date
CN208391742U true CN208391742U (en) 2019-01-18

Family

ID=65065706

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721894311.2U Expired - Fee Related CN208391742U (en) 2017-12-29 2017-12-29 A kind of convenient grinding tool of lightweight diamond

Country Status (1)

Country Link
CN (1) CN208391742U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113859410A (en) * 2021-09-28 2021-12-31 深圳市自由侠科技有限公司 Folding structure of electric scooter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113859410A (en) * 2021-09-28 2021-12-31 深圳市自由侠科技有限公司 Folding structure of electric scooter
CN113859410B (en) * 2021-09-28 2022-10-25 深圳市自由侠科技有限公司 Folding structure of electric scooter

Similar Documents

Publication Publication Date Title
CN206855154U (en) Stainless steel tube sanding apparatus
CN206084632U (en) Portable stone material grinding device
CN106141820B (en) A kind of hardware is made of safety-type knife sharpening device
CN208428086U (en) A kind of two-sided polishing derusting device of arc iron plate
CN208391742U (en) A kind of convenient grinding tool of lightweight diamond
CN211029491U (en) Polishing and rust removing device for machining hardware pipe
CN108655922A (en) It is a kind of that waste and old steel pipe is facilitated to carry out polishing derusting and segmentation cutting integrated apparatus
CN207669077U (en) A kind of portable stainless-steel inside pipe wall polisher
CN211465788U (en) Burnishing device is used in production of bulb pull rod
CN207578043U (en) Roller grinding device
CN108481136A (en) A kind of handware surface polishing spray process equipment
CN208801221U (en) One kind being used for grinding machine cooling device
CN215547962U (en) Long service life's grinding wheel grinding apparatus
CN214080617U (en) Polishing device for steel pipe
CN202292388U (en) Honing head for processing helical sleeve with key groove hole
CN214292677U (en) Hexagonal handle paddle wheel
CN208528773U (en) A kind of blinds grinding wheel cloth group sanding machine
CN217097168U (en) Aluminum alloy polishing machine with automatic waxing mechanism
CN207953616U (en) A kind of abrasive disk of composite welding
CN207043873U (en) A kind of multifunctional cutter sanding apparatus
CN215968234U (en) Overhead grinding wheel dresser
CN206795431U (en) A kind of sanding apparatus for tool marks caused by CNC processing metalworks
CN213731083U (en) Burnishing device for metal material
CN205734311U (en) A kind of drilling machine with sanding apparatus
CN212217966U (en) Quick knife sharpening device

Legal Events

Date Code Title Description
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: 20190118

Termination date: 20211229