CN109307034A - Shock absorber for vehicle - Google Patents
Shock absorber for vehicle Download PDFInfo
- Publication number
- CN109307034A CN109307034A CN201810252513.XA CN201810252513A CN109307034A CN 109307034 A CN109307034 A CN 109307034A CN 201810252513 A CN201810252513 A CN 201810252513A CN 109307034 A CN109307034 A CN 109307034A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- grease chamber
- shock
- inner tube
- outer tube
- 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.)
- Granted
Links
- 230000035939 shock Effects 0.000 title claims abstract description 26
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 21
- 239000004519 grease Substances 0.000 claims description 47
- 238000013016 damping Methods 0.000 abstract description 14
- 238000007906 compression Methods 0.000 abstract description 9
- 230000006835 compression Effects 0.000 abstract description 7
- 239000013589 supplement Substances 0.000 abstract 3
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 239000000725 suspension Substances 0.000 abstract 1
- 239000010720 hydraulic oil Substances 0.000 description 15
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
- F16F9/185—Bitubular units
- F16F9/187—Bitubular units with uni-directional flow of damping fluid through the valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
- F16F9/341—Special valve constructions; Shape or construction of throttling passages comprising noise-reducing or like features, e.g. screens
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2232/00—Nature of movement
- F16F2232/08—Linear
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
A shock absorber for a vehicle includes a first shock absorbing unit and a second shock absorbing unit. The first suspension unit can reduce the generation of damping force and quickly supplement oil when performing compression action through the first check valve, and can generate enough damping force on the stretching side when performing stretching action. And the second shockproof unit can generate enough damping force on the compression side through the second one-way valve when performing compression action, and reduce the generation of the damping force to supplement oil quickly when performing stretching action. In addition, the second shock absorption unit can quickly supplement oil during the stretching action, so that a control valve is not needed to be additionally arranged, and the cost is further reduced.
Description
Technical field
The present invention relates to a kind of buffer units, more particularly to a kind of automobile-used shock absorber.
Background technique
Refering to fig. 1 and Fig. 2, general automobile-used shock absorber are made of two one group of shock absorbing apparatus 1, each shock-absorbing
Device 1 include outer tube 11, be fixed in the outer tube 11 inner tube 12, be sheathed on 12 bottom end of said inner tube block 13, under
And Shangdi wears the outer tube 11 and fixes the fixing piece 14 of said inner tube 12 and the block 13, is set to the top of said inner tube 12
The control valve 15 at end can slide up and down to breeches pipe 16 between the outer tube 11 and said inner tube 12, be set to the breeches pipe
Spring 17 in 16 is set in the breeches pipe 16 and is equipped with 18, two, sleeve of upper check valve 181 and lower check valve 182 and opens
Lower aperture 191 in said inner tube 12 and two are located above the lower aperture 191, and are opened in said inner tube 12
Upper aperture 192.Said inner tube 12 includes the tube body 121 being fixed on the outer tube 11, and is set to the tube body 121
The footstock portion 122 on top.The control valve 15 is set in the footstock portion 122.The tube body of the outer tube 11, said inner tube 12
Portion 121 and the sleeve 18 match, to define the downside grease chamber 193 for being connected to the lower aperture 191.Said inner tube 12,
The breeches pipe 16 and the sleeve 18 match, to define the upside grease chamber 194 for being connected to the upper aperture 192.
Hydraulic oil is filled in the outer tube 11 and said inner tube 12, and the breeches pipe 16 can drive the sleeve 18, make
The sleeve 18 can carry out along the vertical direction pulling action or compressed action relative to said inner tube 12.When the sleeve 18 carries out
When compressed action, the breeches pipe 16 can compress the spring 17, and in aforementioned process, the hydraulic oil in the downside grease chamber 193
A part can push downwards because of the sleeve 18, and be entered in the tube body 121 of said inner tube 12 by the lower aperture 191, separately
Upper check valve 181 that is a part of then passing through the sleeve 18 flows directly into the upside grease chamber 194, aforementioned to enter the tube body
The hydraulic oil part in portion 121 can be flowed into the breeches pipe 16 by the control valve 15 again, and hydraulic oil is in flow process above-mentioned
In can generate compressed side damping force, to promote the stability of car body being set on the breeches pipe 16 and handling.
When the breeches pipe 16 carries out pulling action upwards, the spring 17 discharges elastic force so that car body resets, aforementioned
In the process, the sleeve 18 pushes up against, and the upper check valve 181 described at this time is in closed state, makes in the upside grease chamber 194
Hydraulic oil part is entered in the tube body 121 by the upper aperture 192, another part hydraulic oil then by the control valve 15 into
Enter in the tube body 121, and the hydraulic oil in the tube body 121 flows back to the downside grease chamber by the lower aperture 191 again
In 193, hydraulic oil can generate tensile side damping force in flow process above-mentioned, to absorb the vibration of road surface generation.The control
15 controllable flow rate of valve processed, keeps upward flow smaller, and downward flow is larger, to avoid repairing when progress pulling action
Slow problem, but the control valve 15 is additionally set and will cause the excessively high situation of cost.
However, when the breeches pipe 16 is persistently made the sleeve 18 continue to move down by lower pressure, the sleeve
18 can cover in the block 13, at this time because the two gap is smaller, therefore can generate greatly oil moment and lock strength to avoid institute
It states breeches pipe 16 and hits the outer tube 11, to avoid instable generation.However when the sleeve 18 is far from the block 13
When, negative pressure can be generated because of the lesser reason in gap between the two, cause the two to be difficult to separate, and during strong separation
It is also easy to produce cupping sound, influence usage experience, therefore lower check valve 182 need to be additionally set, provides additional oil circuit to avoid generation
Cupping sound will so be such that configuration complexity and cost improves.
Summary of the invention
It can provide pressure side damping force the purpose of the present invention is to provide one kind and can avoid generating cupping sound and use can be saved
Expect to reduce the automobile-used shock absorber of cost.
The automobile-used shock absorber of the present invention, it is characterised in that: the automobile-used shock absorber includes the first shock-absorbing unit and the second shock-absorbing
Unit, the first shock-absorbing unit includes the first outer tube, the first inner tube being fixed in first outer tube, at least one opens up
In in first inner tube the first sidewise hole, be slidably disposed between first outer tube and first inner tube first
Breeches pipe, the first sleeve being set between first inner tube and first breeches pipe, and be set in the first sleeve
One check valve, the first sleeve can be driven by first breeches pipe and relative to first inner tube and first outer tube to
Lower compression is pulled up, and first check valve is in open state when the first sleeve is compressed downwards, and described the
One sleeve is in closed state when being pulled up, and the second shock-absorbing unit includes the second outer tube, is fixed in second outer tube
The second inner tube, at least one second sidewise hole being opened in second inner tube, be slidably disposed in outside described second
The second breeches pipe, the second sleeve that is set between second inner tube and second breeches pipe between pipe and second inner tube, and
The second one-way valve being set in the second sleeve, the second sleeve can be by second breeches pipe drive and relative to described
Second inner tube and second outer tube are compressed or are pulled up downwards, and the second one-way valve is compressed downwards in the second sleeve
When it is in closed state and in open state when the second sleeve is pulled up.
Preferably, aforementioned automobile-used shock absorber, wherein the first outer tube of the first shock-absorbing unit and the first inner tube phase
The first through slot is fitted around out, first through slot is separated out first be located at below the first sleeve by the first sleeve
Downside grease chamber, and the first upside grease chamber above the first sleeve, when first check valve is opened, described first
Downside grease chamber is connected to first upside grease chamber, and when first closed check valve, first downside grease chamber is not connected to institute
State the first upside grease chamber.
Preferably, aforementioned automobile-used shock absorber, wherein the second outer tube of the second shock-absorbing unit and the second inner tube phase
The second through slot is fitted around out, second through slot is separated out second be located at below the second sleeve by the second sleeve
Downside grease chamber, and the second upside grease chamber above the second sleeve, when the second one-way valve is opened, described second
Downside grease chamber is connected to second upside grease chamber, and when the second one-way valve is closed, second downside grease chamber is not connected to institute
State the second upside grease chamber.
Preferably, aforementioned automobile-used shock absorber, wherein the first shock-absorbing unit includes multiple first sidewise holes.
Preferably, aforementioned automobile-used shock absorber, wherein the second shock-absorbing unit includes multiple second sidewise holes.
Beneficial effect of the invention is: when the first shock-absorbing unit carries out compressed action and the second shock-absorbing list
When member carries out pulling action, first check valve and the second one-way valve can be opened so that hydraulic oil passes through, and can reduce resistance
Buddhist nun's power with quick repairing can so be not required to that control valve additionally is arranged and reaches the effect of saving cost；Conversely speaking, described
One shock-absorbing unit carries out pulling action and the second shock-absorbing unit when carrying out compressed action, first check valve and described the
Two check valves can be closed without allowing hydraulic oil to pass through, and hydraulic oil will be by least one described first sidewise hole and described at this time
At least one second sidewise hole, so that tensile side (the first shock-absorbing unit) or compressed side (the second shock-absorbing unit) damping force are generated,
And damping force when the second shock-absorbing cell compression is enough to maintain driving stability, and the oil lock strength generated also supports vehicle enough
Body does not bottom out, therefore the first shock-absorbing unit and the second shock-absorbing unit are just not required to setting block, not only escapable cost,
And it can avoid generating cupping sound.
Detailed description of the invention
Fig. 1 and Fig. 2 is all cross-sectional view, illustrates aspect of the sleeve of existing shock absorbing apparatus in height different location；
Fig. 3 is schematic diagram, illustrates the embodiment of the automobile-used shock absorber of the present invention；
Fig. 4 is cross-sectional view, illustrates the first shock-absorbing unit in the embodiment；
Fig. 5 is cross-sectional view, illustrates the second shock-absorbing unit in the embodiment；
Fig. 6 is cross-sectional view, illustrates that the first shock-absorbing unit is carried out downwards the aspect after compressed action by Fig. 4；
Fig. 7 and Fig. 8 is all cross-sectional view, illustrates that the first shock-absorbing unit carries out the state of pulling action；
Fig. 9 is cross-sectional view, illustrates that the second shock-absorbing unit is carried out downwards the aspect after compressed action by Fig. 5；
Figure 10 and Figure 11 is all cross-sectional view, illustrates that the second shock-absorbing unit carries out the state of pulling action；And
Figure 12 is cross-sectional view, illustrates that the second shock-absorbing unit has the aspect of more second sidewise holes.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and embodiments.
Refering to Fig. 3, Fig. 4 and Fig. 5, one embodiment of the automobile-used shock absorber of the present invention is suitably mounted on a car body.
The automobile-used shock absorber includes that a first shock-absorbing unit 2 and one are set to institute with the first shock-absorbing unit 2 at intervals
State the second shock-absorbing unit 3 of the car body other side.The first shock-absorbing unit 2 includes that first outer tube 21, one is fixed on institute
State the first inner tube 22 in the first outer tube 21, multiple the first sidewise holes 23, one being opened in first inner tube 22 can be slided
The first breeches pipe 24, one being set between first outer tube 21 and first inner tube 22 dynamicly is set to first inner tube
First sleeve 25 and first check valve 26 being set in the first sleeve 25 between 22 and first breeches pipe 24.
First outer tube 21 and first inner tube 22 are matched around first through slot 27 vertically extended out.It is described
First through slot 27 is separated out the first downside grease chamber 271 for being located at 25 lower section of first sleeve by first sleeve 25,
An and first upside grease chamber 272 being located above the first sleeve 25.
Refering to Fig. 4 and Fig. 6, when first outer tube 21 is compressed, can make in first outer tube 21 and described first
Pipe 22 moves up, that is, first breeches pipe 24 and its first sleeve 25 driven relative to it is both aforementioned downwards into
Row compressed action, the first check valve 26 described in compression process is in open state, so that first downside grease chamber 271 can
It is connected to first upside grease chamber 272 by first check valve 26, therefore hydraulic oil can be directly by described first after being compressed
Downside grease chamber 271 enters in first upside grease chamber 272, thus the effect of reaching quick repairing.Refering to Fig. 7 and Fig. 8, work as institute
When stating the first outer tube 21 and being no longer influenced by compression, first outer tube 21 and first inner tube 22 can be made by being set to internal spring
It is downward to reset, that is, first breeches pipe 24 and the first sleeve 25 is made to carry out stretching upwards moving relative to both aforementioned
Make, first check valve 26 is in closed state during stretching, so that first downside grease chamber 271 and described first
Upside grease chamber 272 is not attached to lead to, therefore the hydraulic oil in first upside grease chamber 272 just passes through institute from first inner tube 22
It is flowed back in first downside grease chamber 271 after stating the first sidewise hole 23, such reflux oil circuit can avoid negative pressure and generate without sending out
Cupping sound out.
Refering to Fig. 5 and Fig. 9, the second shock-absorbing unit 3 includes that second outer tube 31, one is fixed on outside described second
The second inner tube 32, multiple the second sidewise holes 33, one being opened in second inner tube 32 in pipe 31 are mounted slidably
The second breeches pipe 34, one between second outer tube 31 and second inner tube 32 is set to second inner tube 32 and described
Second sleeve 35 and a second one-way valve 36 being set in the second sleeve 35 between second breeches pipe 34.Described second
Outer tube 31 and second inner tube 32 are matched around second through slot 37 vertically extended out.The second sleeve
35 separate out second through slot 37 the second downside grease chamber 371 and a position that one is located at 35 lower section of second sleeve
The second upside grease chamber 372 above the second sleeve 35.
When second outer tube 31 is compressed, second outer tube 31 and second inner tube 32 can be made to moving up
It moves, that is, second breeches pipe 34 and its second sleeve 35 driven carry out compressing downwards moving relative to both aforementioned
Make, the second one-way valve 36 described in compression process is in closed state, so that second downside grease chamber 371 can not be connected to institute
The second upside grease chamber 372 is stated, therefore the hydraulic oil in second downside grease chamber 371 can be by second sidewise hole 33 after being compressed
Into in second inner tube 32, to generate enough compressed side damping forces.0 and Figure 11 refering to fig. 1, when second outer tube
31 when being no longer influenced by compression, and being set to internal spring can be such that second outer tube 31 and second inner tube 32 resets downwards,
So that second breeches pipe 34 and the second sleeve 35 is carried out pulling action upwards relative to both aforementioned, was stretching
Second one-way valve 36 described in journey is in open state, so that second downside grease chamber 371 passes through the second one-way valve 36
It is connected with second upside grease chamber 372, therefore hydraulic oil can quickly be covered by this flow path.It should be strongly noted that institute
The second sidewise hole 33 is stated other than spacing-visible demand is adjusted to change compressed side damping force, is changed with being also shown in Fig.12
For different number, damping force is enable to be promoted in a progressive way, different shock-absorbing effects is generated with the different pavement behavior of correspondence.
It is multiple that refering to Fig. 3, Fig. 4 and Fig. 5, the second shock-absorbing unit 3 provides the enough damping forces of compressed side and oil lock strength,
Therefore it is not easy to bottom out without block is arranged, and cupping sound will not be generated.And the first shock-absorbing unit 2 then can reach whereby fast
The effect of fast repairing, with can stretch when fast reaction, generate enough tensile side damping forces.
In conclusion configuration of the invention while with good shock-absorbing performance, also reach can be not required to setting block and
It the effect of additional control valve, and cupping sound will not be generated, effectively reduces cost and materials, therefore mesh of the invention can be reached really
's.
Claims (5)
1. a kind of automobile-used shock absorber, it is characterised in that: the automobile-used shock absorber includes the first shock-absorbing unit and the second shock-absorbing unit,
The first shock-absorbing unit include the first outer tube, the first inner tube being fixed in first outer tube, at least one be opened in institute
The first fork stating the first sidewise hole in the first inner tube, being slidably disposed between first outer tube and first inner tube
The first sleeve managed, be set between first inner tube and first breeches pipe, and be set in the first sleeve first
Check valve, the first sleeve can be downward relative to first inner tube and first outer tube by first breeches pipe drive
It compresses or is pulled up, first check valve is in open state when the first sleeve is compressed downwards, and described first
In closed state when sleeve is pulled up, the second shock-absorbing unit includes the second outer tube, is fixed in second outer tube
Second inner tube, is slidably disposed in second outer tube at least one second sidewise hole being opened in second inner tube
And the second breeches pipe between second inner tube, the second sleeve that is set between second inner tube and second breeches pipe, and set
The second one-way valve being placed in the second sleeve, the second sleeve can be driven by second breeches pipe and relative to described the
Two inner tubes and second outer tube are compressed or are pulled up downwards, and the second one-way valve is when the second sleeve is compressed downwards
It is in closed state and in open state when the second sleeve is pulled up.
2. automobile-used shock absorber according to claim 1, it is characterised in that: the first outer tube of the first shock-absorbing unit and institute
It states the first inner tube to match around the first through slot is gone out, the first sleeve, which separates out first through slot, is located at the first set
First downside grease chamber of cylinder lower section, and the first upside grease chamber above the first sleeve, when first check valve is in
When open state, first downside grease chamber is connected to first upside grease chamber, when first check valve is in closed state,
First downside grease chamber is not connected to first upside grease chamber.
3. automobile-used shock absorber according to claim 2, it is characterised in that: the second outer tube of the second shock-absorbing unit and institute
It states the second inner tube to match around the second through slot is gone out, the second sleeve, which separates out second through slot, is located at described second set
Second downside grease chamber of cylinder lower section, and the second upside grease chamber above the second sleeve, when the second one-way valve is in
When open state, second downside grease chamber is connected to second upside grease chamber, when the second one-way valve is in closed state,
Second downside grease chamber is not connected to second upside grease chamber.
4. automobile-used shock absorber according to claim 1, it is characterised in that: the first shock-absorbing unit includes multiple first sides
Xiang Kong.
5. automobile-used shock absorber according to claim 1, it is characterised in that: the second shock-absorbing unit includes multiple second side
Xiang Kong.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW106125212 | 2017-07-27 | ||
| TW106125212A TWI682108B (en) | 2017-07-27 | 2017-07-27 | Shock absorber for car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109307034A true CN109307034A (en) | 2019-02-05 |
| CN109307034B CN109307034B (en) | 2021-03-09 |
Family
ID=65225780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810252513.XA Active CN109307034B (en) | 2017-07-27 | 2018-03-26 | Shock absorber for vehicle |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109307034B (en) |
| TW (1) | TWI682108B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI705908B (en) * | 2019-08-12 | 2020-10-01 | 開發工業股份有限公司 | Vehicle shock absorber |
| CN113602408B (en) * | 2021-09-15 | 2022-11-01 | 常州开发减震器有限公司 | Front fork tube for shock absorber and manufacturing method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101024370A (en) * | 2005-12-28 | 2007-08-29 | 创辉H·S株式会社 | Wheel suspension device for vehicle |
| CN201494573U (en) * | 2009-08-13 | 2010-06-02 | 张志明 | Lever type shock-absorption front fork of electric vehicle |
| JP2010159018A (en) * | 2009-01-09 | 2010-07-22 | Kayaba Ind Co Ltd | Suspension apparatus |
| CN201539526U (en) * | 2009-10-19 | 2010-08-04 | 三阳工业股份有限公司 | Shock absorber with flow guiding function |
| CN101875386A (en) * | 2009-04-30 | 2010-11-03 | 光阳工业股份有限公司 | Motorcycle shock absorber structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200951322A (en) * | 2008-06-05 | 2009-12-16 | Sanyang Industry Co Ltd | Shock absorber having the current-conduction function |
-
2017
- 2017-07-27 TW TW106125212A patent/TWI682108B/en active
-
2018
- 2018-03-26 CN CN201810252513.XA patent/CN109307034B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101024370A (en) * | 2005-12-28 | 2007-08-29 | 创辉H·S株式会社 | Wheel suspension device for vehicle |
| JP2010159018A (en) * | 2009-01-09 | 2010-07-22 | Kayaba Ind Co Ltd | Suspension apparatus |
| CN101875386A (en) * | 2009-04-30 | 2010-11-03 | 光阳工业股份有限公司 | Motorcycle shock absorber structure |
| CN201494573U (en) * | 2009-08-13 | 2010-06-02 | 张志明 | Lever type shock-absorption front fork of electric vehicle |
| CN201539526U (en) * | 2009-10-19 | 2010-08-04 | 三阳工业股份有限公司 | Shock absorber with flow guiding function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109307034B (en) | 2021-03-09 |
| TWI682108B (en) | 2020-01-11 |
| TW201910659A (en) | 2019-03-16 |
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