CN207367958U - Radiator and the fixing structure of radiator based on transistor - Google Patents

Radiator and the fixing structure of radiator based on transistor Download PDF

Info

Publication number
CN207367958U
CN207367958U CN201721273833.0U CN201721273833U CN207367958U CN 207367958 U CN207367958 U CN 207367958U CN 201721273833 U CN201721273833 U CN 201721273833U CN 207367958 U CN207367958 U CN 207367958U
Authority
CN
China
Prior art keywords
boss
fixed part
radiator
transistor
mounting hole
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
CN201721273833.0U
Other languages
Chinese (zh)
Inventor
罗立军
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CN201721273833.0U priority Critical patent/CN207367958U/en
Application granted granted Critical
Publication of CN207367958U publication Critical patent/CN207367958U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Connection Of Plates (AREA)

Abstract

The utility model provides a kind of radiator, for fixing transistor, the radiator include matrix and be shaped in described matrix upper surface and with the boss of the mounting hole male-female engagement in crystal pipe fixed part, expanded bore is provided with the top of the boss, and edge fixed part is formed between the outer edge of the madial wall of the expanded bore and the boss.The invention also discloses a kind of fixing structure of radiator based on transistor, including transistor and radiator, transistor is equipped with fixed part, mounting hole is provided with fixed part, for boss with the mounting hole male-female engagement so that fixed part is installed on the boss, edge fixed part, which turns up to be pressed on the fixed part, makes the fixed part be clamped between the boss and matrix.The utility model is directly fixed using the boss that is shaped on heat sink with transistor, simple in structure, coordinates without screw easy to assembly, and the transistor arrangement that fixes is firm is not easy to loosen.

Description

Radiator and the fixing structure of radiator based on transistor
Technical field
It the utility model is related to the field of radiating of fever type component, more particularly to a kind of radiator of fixed transistor.
Background technology
The radiator of traditional fixation transistor generally fixes crystal by parts such as rivet, screw, nut and shrapnels Pipe.Traditional fixed form is generally required by additional part, in addition to needing to utilize more materials and cost higher, And automation relatively difficult to achieve.Transistor and radiator are fixed by additional part, rivet, screw, nut and shrapnel may Because some extraneous factors loosen transistor and radiator can be caused to separate.Therefore be badly in need of it is a kind of solve the above problems it is new Fixation transistor radiator.
Utility model content
The purpose of this utility model is to provide a kind of radiator, is fixed without screw, simple in structure, easy to assembly, and solid The transistor arrangement set is firm to be not easy to loosen.
The another object of the utility model be to provide one kind can easy installation, save material, be easy to implement automation or The semi-automatic fixing structure of radiator based on transistor.
The utility model provides a kind of radiator for being used to fix transistor, and the radiator includes matrix and is integrally formed In described matrix upper surface and with the boss of the mounting hole male-female engagement in crystal pipe fixed part, be provided with expansion at the top of the boss Zhang Kong, and edge fixed part is formed between the outer edge of the madial wall of the expanded bore and the boss.
Compared with prior art, the utility model is directly integrally formed a boss on the matrix of radiator, utilizes boss Directly radiator and transistor are fixed together, when fixed, the mounting hole on transistor is installed on boss, uses edge Fixed part turns up and pushes and can be fixed on transistor is firm on radiator, is fixed without screw, simple in structure, assembling side Just, and the transistor arrangement that fixes is firm is not easy to loosen.
It is preferred that the expanded bore is the counterbore being opened at the top of the boss or is the groove that at least one sidepiece penetrates through Mouthful.The expanded bore can make subsequent transistor preferably expand outwardly edge fixed part when being fixed with radiator.Wherein, when described When notch is two or more, more than two notches intersect setting.
Specifically, the depth of the notch is less than or equal to the height of the boss.
It is preferred that the boss is cylindrical end tangs or stepped boss.
Specifically, the cylindrical end tangs are cylindrical boss or prismatic boss.
It is preferred that the expanded bore is the counterbore being opened at the top of the boss, and the edge fixed part is along its week Some openings are offered so that the edge fixed part is divided into some sections to a determining deviation.
Specifically, the depth of the opening is less than or equal to the height of the boss.
It is preferred that be also convexly equipped with locating piece in described matrix, the locating piece is located at the both sides of the boss, and respectively at The boss has a certain distance, and one and the transistor are formed between its opposite flank of the locating piece of the boss both sides The positioning area of fixed part clearance fit.The positioning area can play position-limiting action to the fixed part of transistor and not damage transistor The structure of fixed part, in fixed transistor, without repeatedly adjustment alignment, directly can wear the mounting hole of the fixed part of transistor On boss, the fixed part of transistor is limited between positioning area, prevent transistor occur swing, deflection phenomena such as so that Radiator fix transistor it is more firm.
It is preferred that there is groove corresponding with the boss and locating piece shaped position in the lower surface of described matrix.
Wherein, the height of the boss is higher than the hole depth of the transistor mounting hole.Preferably, the height ratio of the boss The depth of the mounting hole of the transistor is higher by more than 0.2mm.Wherein, mounting hole of the height of the boss than the transistor Depth to be higher by more than 0.8mm be optimal.
The utility model also provides a kind of fixing structure of radiator based on transistor, including transistor and radiator, institute State transistor and be equipped with fixed part, mounting hole is provided with the fixed part, the radiator as it appears from the above, the boss with it is described Mounting hole male-female engagement, is installed on the boss, the height of the boss so that the fixed part is coordinated by the mounting hole Higher than the hole depth of the transistor mounting hole, the edge fixed part turns up to be pressed on the fixed part degree, makes the fixed part It is clamped between the boss and matrix.
Compared with prior art, the utility model passes through extruding using the boss being shaped in described matrix The boss make boss turn up make transistor be clamped in boss turn up part matrix between so that transistor be fixed on it is scattered On hot device, it can be achieved to fix without additional part, transistor is fixed on radiator becomes simple, and fix Transistor arrangement is firm to be not easy to loosen.
Specifically, be also convexly equipped with locating piece in described matrix, the locating piece is located at the boss both sides, and and respectively with The boss has a certain distance, and one and crystal pipe fixed part are formed between its opposite flank of the locating piece of the boss both sides The positioning area of clearance fit is to limit the position of the fixed part.The positioning area can play position-limiting action to the fixed part of transistor And the structure of the fixed part of transistor is not damaged,, can be directly by transistor without repeatedly adjustment alignment in fixed transistor The mounting hole of fixed part is through on boss, and the fixed part of transistor is limited between positioning area, prevent transistor generation from swinging, Phenomena such as deflection so that radiator fixes the more firm of transistor fixation.
Brief description of the drawings
Fig. 1 is the schematic diagram of the fixing structure of radiator based on transistor described in the utility model first embodiment.
Fig. 2 is the decomposition diagram of the fixing structure of radiator based on transistor described in Fig. 1.
Fig. 3 is the sectional view of the fixing structure of radiator based on transistor described in Fig. 1.
Fig. 4 is the structure diagram of the radiator of the fixing structure of radiator based on transistor described in Fig. 1.
Fig. 5 is the exploded pictorial of the fixing structure of radiator based on transistor described in the utility model second embodiment Figure.
Fig. 6 is the sectional view of the fixing structure of radiator based on transistor described in Fig. 5.
Fig. 7 is the structure diagram of the radiator of the fixing structure of radiator based on transistor described in Fig. 5.
Fig. 8 is the exploded pictorial of the fixing structure of radiator based on transistor described in the utility model 3rd embodiment Figure.
Fig. 9 is the exploded pictorial of the fixing structure of radiator based on transistor described in the utility model fourth embodiment Figure.
Figure 10 is the exploded pictorial of the fixing structure of radiator based on transistor described in the 5th embodiment of the utility model Figure.
Embodiment
In order to have the understanding become apparent to the technical characteristics of the utility model, purpose and effect, it is detailed first to compare attached drawing Illustrate specific embodiment of the present utility model.
Referring to figs. 1 to Fig. 4, the utility model discloses a kind of fixing structure of radiator 100 based on transistor, the heat dissipation Device fixed structure 100 includes transistor 3 and radiator 20, and transistor 3 is equipped with fixed part 10, mounting hole is provided with fixed part 10 4, formed with being engaged with mounting hole 4 to fix the boss 2 of fixed part 10 on radiator 20.
With reference to figure 2 and Fig. 4, radiator 20 include matrix 1 and be shaped in 1 upper surface of described matrix and with transistor 3 Fixed part 10 on 4 male-female engagement of mounting hole boss 2, the height of the boss 2 is higher than 3 mounting hole 4 of transistor Hole depth, the top of the boss 2 are provided with expanded bore 5, and between the outer edge of the madial wall of the expanded bore 5 and the boss 2 Form edge fixed part 6.In the present embodiment, the expanded bore 5 is counterbore, and the shape of the counterbore is cylindrical, certain institute It can also be prismatic to state counterbore, such as its cross section can be trapezoidal or rectangle etc., and technical staff can be according to actual production technique Change the shape of counterbore.Wherein, matrix 1 can be substrate or extrusion section bar etc..
Preferably, the height of the boss 2 are higher by more than 0.8mm than the depth of the mounting hole 4 of the transistor 3, certainly The height being higher by is not restricted to more than 0.8mm, can also combine size factor of production needs, transistor 3 etc. and set the degree being higher by Put in the range of 0.2-0.8mm.
During assembling, first the mounting hole 4 of the fixed part 10 of transistor 3 is set on boss 2, at this time, fixed part 10 with it is convex Platform 2 is by 3 male-female engagement of mounting hole, then, can be used riveting process at expanded bore 5 outwardly against edge fixed part 6, so that Edge fixed part 6 turns up and presses on fixed part 10, so that fixed part is accommodated edge fixed part 6 and matrix 1 in boss 2 Between.Wherein, the riveting technique can be stamping riveting, cold roll riveting etc..
With reference to figure 1 and Fig. 3, after assembling, the radiator 20 of fixing structure of radiator 100 includes matrix 1 and is integrally formed In the boss 2 of 4 male-female engagement of mounting hole on 1 upper surface of described matrix and fixed part 10 with transistor 3, the boss 2 Top is provided with expanded bore 5, and edge fixed part 6 is formed between the outer edge of the madial wall of the expanded bore 5 and the boss 2, Since the height of the boss 2 is higher than the hole depth of 3 mounting hole 4 of transistor, therefore edge fixed part 6 is divided into the latter half 12 And top half, the latter half 12 of the edge fixed part 6 are consolidated in vertical shape and with 4 male-female engagement of mounting hole, the edge Determine the top half in portion 6 and form valgus 11 with from the fixed part 10 to conflict relative to its 12 outward bending of the latter half, So that fixed part is clamped between the valgus 11 of boss 2 and matrix 1.
Referring to figs. 1 to Fig. 4, described matrix 1 is also convexly equipped with locating piece 7, and the locating piece 7 is shaped on matrix 1, when The right locating piece 7 can be also fixed in described matrix 1 by other means, and the locating piece 7 is located at the two of the boss 2 Side, and there is a certain distance respectively at the boss 2, this distance is generally determined according to the model of transistor, the boss 2 A positioning area 8 with 10 clearance fit of fixed part of the transistor 3 is formed between its opposite flank of the locating piece 7 of both sides, with Fixed part 10 is set to be limited in the positioning area 8.Wherein, the opposite flank of the locating piece 7 pair with fixed part 10 respectively Side is answered to coordinate, in the present embodiment, the locating piece 7 is cuboid, and the quantity of locating piece 7 is 2, the respective side of fixed part 10 Face is also the plane being parallel to each other.Certainly, the locating piece 7 can be the protrusion of other shapes, quantity, the protrusion of locating piece 7 Position can be also adjusted according to factors such as the model of transistor, the quantity for being actually needed installation.
With reference to figure 3 to Fig. 4, the boss 2 of the utility model is process by matrix 1 by cold heading technique, therefore described matrix 1 Lower surface on have groove 9 corresponding with the boss 2 and 7 shaped position of locating piece.Wherein, the material of described matrix 1 is aluminium Alloy or copper alloy, with good ductility.
Preferably, the gap between the locating piece 7 of 2 both sides of boss and the fixed part 10 of transistor 3 are 0.025mm, this side Case can limit the position of transistor 3, prevent transistor 3 from there is large-scale movement, in case transistor 3 is sent out in follow-up processing Raw offset is swung.Certainly, which can also be other numerical value, can be by fixation of the operating personnel according to matrix 1, transistor 3 The scantling in portion 10 and it is related it needs to be determined that.
With reference to figure 2, in the present embodiment, the 2 circle of position cylindrical end tangs of boss, certainly, the boss can also be prismatic The cylindrical end tangs such as boss.
Wherein, the expanded bore 5 is formed at 2 top bosom of boss and is preferred.In the present embodiment, the expanded bore 5 is shape Into in the round hole in 2 top bosom of boss, so that 6 consistency of thickness of edge fixed part.
Please referring to Fig.1 to Fig. 4, it is as follows that transistor 3 is fixed to the concrete mode of radiator 20, using cold-heading technology, from The lower surface of the matrix 1 of radiator 20, which carries out extruding, makes the raised boss 2 in 1 upper surface of matrix and locating piece 7, meanwhile, in matrix 1 Lower surface occur with boss 2 and the groove 9 of 7 shape of locating piece and position consistency, the mounting hole 4 of the transistor 3 is right The fixed part 10 of transistor 3, is through the latter half 12 of boss 2 by the accurate boss 2, and it is fixed make it that transistor 3 is limited in In the area 8 of position, by riveting the expanded bore 5 on extruding boss 2, the valgus 11 of boss 2 is set to expand outwardly and push with by crystal The fixed part 10 of pipe 3, which is clamped in, to turn up between part 11 and matrix 1.
Since boss 2 and locating piece 7 are shaped on the matrix 1 of radiator 20, without additional part by crystalline substance Body pipe 3 is fixed on radiator 20, can reduce that the use of material is cost-effective, and the technique of shaping and the fixation of boss 2 is more simple It is single so that transistor 3, which is fixed on radiator 20, becomes easy, therefore is easy to implement automation or semi-automation.
It is the utility model second embodiment with reference to figure 5 to Fig. 7.With reference to figure 7, unlike first embodiment, at this In embodiment, the boss 2a of projection is stepped boss on its matrix 1, and the step type boss is divided into part 21 and lower part 22 two parts, upper part 21 and lower part 22 are made of two different cylinders of volume respectively, and the upper part 21 is body The less cylinder of product, the lower part 22 are the larger cylinder of volume, and the top of the upper part 21 is provided with expanded bore 5, The lateral wall of the upper part 21 and the madial wall of the counterbore 51 form the edge fixed part 6a.
With reference to figure 5 and Fig. 6, the mounting hole 4 of transistor 3 can be through in the lower part 22 of the boss 2, shape on upper part 21 Into edge fixed part 6a turn up and be pressed on fixed part 10, to fix transistor 3.This construction increases the height of the boss 2a Degree, makes the location of edge fixed part 6a higher, easy to make retreading forming outside edge fixed part 6a fix the transistor 3.
It is in the present embodiment, convex unlike first embodiment for the 3rd embodiment of the utility model with reference to figure 8 Expanded bore 52 at the top of platform 2b is the notch 52 of sidepiece perforation, and the outer edge of notch 52 forms two pieces with the madial wall of boss 2 to be had The edge fixed part 6b of thickness, when fixing structure of radiator 100 assembles, the boss 2b engages with the mounting hole 4 of transistor 3, Two edges fixed part 6b outward bendings are fixed part 10 is clamped between edge fixed part 6b and boss 2b.In the present embodiment, The quantity of the notch 52 is 1, and notch 52 is symmetrical will be divided at the top of boss 2b by the bosom at the top of boss 2b Two parts, certain notch 52 may also be arranged on off-centered position, and the shape of notch 52 is rectangle, and the shape of notch 52 is also It can be trapezoidal, arc etc..
The quantity of certain notch 52 is alternatively more than two numbers such as two or three, at this time, multiple 52 phases of notch It is mutually arranged in a crossed manner.Wherein, boss 2b bosoms are arranged on its crosspoint to be preferred, and are preferred along the circumferential isogonism setting of boss. For example, when notch 52 is two, the notch 52 can be mutually perpendicular to and intersect on the bosom of boss upper surface.To sum up, Technical staff can also combine quantity, position, shape and the layout of actual adjustment notch.
It is the fourth embodiment of the utility model with reference to figure 9, unlike first embodiment, in the present embodiment, its The edge fixed part 6c of boss 2c offers 4 openings 23 so that the edge fixed part 6c is divided along its circumferential direction with a determining deviation For 4 sections.Wherein, in the present embodiment, the width of four openings 23 is equal, and four openings 23 are divided relative to the center isogonism of boss 2c Cloth, so that the equal length of 4 sections of edge fixed part 6c.In the present embodiment, 23 shape of being open is rectangle, certainly also can be by opening Shape make the openings of the shapes such as triangle, waveform as needed.And can be according to the model of transistor, production needs Quantity, the location and shape of opening 23 are set, edge fixed part 6c is divided into other hop counts.Wherein, the expansion at the top of boss 2c It is cylindrical hole to open hole 53.Wherein, in the present embodiment, be open 23 depth be equal to boss 2c height.
With reference to figure 10, for the 5th embodiment of the utility model, unlike fourth embodiment, opening in the present embodiment The depth of mouth 24 is less than the height of boss, so that the latter half of boss 2d is continuous cylinder 12a, edge fixed part 6d is formed In boss 2d top halfs, edge fixed part 6d be formed at the madial wall of the expanded bore 54, the boss 2d outer edge with And between the side wall of opening 24.During assembling, make the mounting hole 4 and cylinder 12a male-female engagements of transistor 3, by riveting edge Fixed part 6d turns up is clamped in the turning up between part 11a and matrix 1 of edge fixed part 6d by the fixed part 10 of transistor 3. In the present embodiment, retain the latter half of boss 2d so that the structure of boss 2d is more stablized, and transistor 3 is fixed on boss When on 2d, the structure or damage transistor of damage boss 2d are prevented.
Wherein, four openings 24 are set along the circumferential isogonism of boss 2d, and the width of four openings 24 is equal, so that 4 sections The equal length of edge fixed part 6d.Certainly can be needed to set according to the model of transistor, production the quantity of opening 24, position and Shape, is divided into other hop counts by edge fixed part 6d.
Wherein, the expanded bore 54 at the top of boss 2d is cylindrical hole, and the shape of expanded bore 54 can adjust as needed.
The foregoing is merely the utility model institute preferred embodiment, it is impossible to the right model of the utility model is limited with this Enclose.In the concept of the utility model, corresponding change can be reasonably made.Therefore, the protection model of the utility model Claims should be subject to by enclosing.

Claims (10)

1. a kind of radiator, for fixing transistor, it is characterised in that including matrix and be shaped in described matrix upper surface And with the boss of the mounting hole male-female engagement in crystal pipe fixed part, be provided with expanded bore, and the expansion at the top of the boss Edge fixed part is formed between the outer edge of the madial wall in hole and the boss.
2. radiator as claimed in claim 1, it is characterised in that the expanded bore be opened in it is one heavy at the top of the boss Hole or the notch for the perforation of at least one sidepiece, when the notch is two or more, more than two notches are mutually handed over Fork is set.
3. radiator as claimed in claim 2, it is characterised in that the depth of the notch is less than or equal to the height of the boss Degree.
4. radiator as claimed in claim 1, it is characterised in that the boss is cylindrical end tangs or stepped boss.
5. radiator as claimed in claim 1, it is characterised in that the expanded bore be opened in it is one heavy at the top of the boss Hole, and if the edge fixed part along its circumferential direction with a determining deviation offer it is some opening so that the edge fixed part is divided into Cadre's section.
6. radiator as claimed in claim 5, it is characterised in that the depth of the opening is less than or equal to the height of the boss Degree.
7. radiator as claimed in claim 1, it is characterised in that locating piece, the locating piece are also convexly equipped with described matrix There is a certain distance positioned at the both sides of the boss, and respectively at the boss, its is opposite for the locating pieces of the boss both sides A positioning area with crystal pipe fixed part clearance fit is formed between side.
8. radiator as claimed in claim 6, it is characterised in that the lower surface of described matrix is formed with the boss and calmly The groove of the block-shaped position correspondence in position.
9. a kind of fixing structure of radiator based on transistor, including transistor and radiator, the transistor, which is equipped with, to be fixed Portion, is provided with mounting hole on the fixed part, it is characterised in that the radiator is described as described in any one of claim 1 to 8 Boss and the mounting hole male-female engagement, are installed on the boss, institute so that the fixed part is coordinated by the mounting hole The height for stating boss is higher than the hole depth of the transistor mounting hole, and the edge fixed part, which turns up, to be pressed on the fixed part, is made The fixed part is clamped between the boss and matrix.
10. the fixing structure of radiator based on transistor as claimed in claim 9, it is characterised in that also convex in described matrix Equipped with locating piece, the locating piece is located at the both sides of the boss, and has a certain distance with the boss respectively, described convex It is described solid to limit with the positioning area of crystal pipe fixed part clearance fit that one is formed between its opposite flank of the locating piece of platform both sides Determine the position in portion.
CN201721273833.0U 2017-09-28 2017-09-28 Radiator and the fixing structure of radiator based on transistor Expired - Fee Related CN207367958U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721273833.0U CN207367958U (en) 2017-09-28 2017-09-28 Radiator and the fixing structure of radiator based on transistor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721273833.0U CN207367958U (en) 2017-09-28 2017-09-28 Radiator and the fixing structure of radiator based on transistor

Publications (1)

Publication Number Publication Date
CN207367958U true CN207367958U (en) 2018-05-15

Family

ID=62346513

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721273833.0U Expired - Fee Related CN207367958U (en) 2017-09-28 2017-09-28 Radiator and the fixing structure of radiator based on transistor

Country Status (1)

Country Link
CN (1) CN207367958U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108630643A (en) * 2018-06-08 2018-10-09 苏州加拉泰克动力有限公司 Radiator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108630643A (en) * 2018-06-08 2018-10-09 苏州加拉泰克动力有限公司 Radiator

Similar Documents

Publication Publication Date Title
US11480210B2 (en) Thermal concrete wing nut anchor
CN103128157B (en) Pipe end circular notch punching device
US8152403B2 (en) Three-way connector for cabinet frame
CN207367958U (en) Radiator and the fixing structure of radiator based on transistor
US20070145200A1 (en) Display-supporting frame
JPH0645095Y2 (en) Metal laminated gasket
CN203140540U (en) Pipe end circular-arc-shaped gap punching device
CN206209556U (en) Structure improved new radiator
CN210821096U (en) Reinforced aluminum alloy die capable of dissipating heat
CN206077910U (en) The various overlapping mode mounting rails of two-fold flanging
CN105221529B (en) A kind of connector and sheet metal component and metal plate connection component
CN206144920U (en) Supporter of connecting piece and applied this connecting piece
DE102019207498A1 (en) Fixing structure and the structure using semiconductor device
CN104438568A (en) Punching and hole splicing method for power distribution cabinet sheet metal
CN205519577U (en) Zero clearance appearance location structure of mould
CN207563593U (en) A kind of positioning plate of drawing die
CN204230641U (en) A kind of formed steel construction being applicable to distributing cabinet frame
CN219506108U (en) Fender linking bridge and fender mounting structure
CN208261817U (en) A kind of fire alarm pedestal mold
CN217647277U (en) Stamping die for special-shaped profile of bending handle
CN203161730U (en) Aluminum section connecting piece
CN206824522U (en) A kind of punching press leveling die
CN207630155U (en) A kind of aluminium foil cutting device
CN209930766U (en) Heat radiator
CN210002570U (en) board slot type embedded part fixing structure and embedded part gasket therein

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: 20180515

Termination date: 20200928