CN208931347U - Thin-wall tube radially dilates energy absorption device and the rail vehicle with it - Google Patents
Thin-wall tube radially dilates energy absorption device and the rail vehicle with it Download PDFInfo
- Publication number
- CN208931347U CN208931347U CN201821698399.5U CN201821698399U CN208931347U CN 208931347 U CN208931347 U CN 208931347U CN 201821698399 U CN201821698399 U CN 201821698399U CN 208931347 U CN208931347 U CN 208931347U
- Authority
- CN
- China
- Prior art keywords
- thin
- pressure head
- absorption device
- energy absorption
- bearing plate
- 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
Links
Landscapes
- Vibration Dampers (AREA)
Abstract
Energy absorption device is radially dilated the utility model discloses a kind of thin-wall tube and with its rail vehicle, wherein; it includes: formed punch that thin-wall tube, which radially dilates energy absorption device; formed punch includes even power plate; is provided with the first mounting hole on even power plate; be installed on even power plate and rush column, the other end for rushing column is installed with pressure head, and the outside of pressure head is equipped with chamfering structure；Bearing plate is installed with guide frame on bearing plate, forms the guide channel passed through for rushing column and pressure head in guide frame, be provided with the second mounting hole on bearing plate；Thin-walled flow energy absorbing tube, thin-walled flow energy absorbing tube are set in the outside of guide frame, and one end of thin-walled flow energy absorbing tube is connect with bearing plate；Pressure head and guide channel face are arranged, and the width of pressure head is greater than the cross-sectional diameter of thin-walled flow energy absorbing tube.The thin-wall tube radially dilate energy absorption device energy-absorbing effect is good, active force is steady, structure be simply easy to make, main member it is reusable.
Description
Technical field
The utility model relates to train energy absorption device technical fields, radially dilate suction in particular to a kind of thin-wall tube
It can device and the rail vehicle with it.
Background technique
With the continuous development of science and technology with progress, demand of the people to good life also increasingly improved.Traffic is not yet
It is limited only to for fireballing needs, focusing on safety and comfort is also designer's factor in need of consideration.Until two Pius XIs
Before recording, the development trend of rolling stock is always to pursue rapid, lightweight, and under this overall situation, rolling stock passes through one
Secondary speed-raising and upgrading, railway transportation have obtained unprecedented development.It is continuous with speed however, Opportunity coexists with challenge
It improves, is lost caused by traffic accident also more huge.
Railway transportation has the shortcomings that its uniqueness compared with the vehicles such as highway, aviation, that is, there is collision problem, and
And once occur, consequence is hardly imaginable.Since the collision impact energy demand that weight causes greatly generation very big is absorbed.How
Car body lightweight, it is rapid under the premise of improve train minibus have become restrict Transportation Development key factor.
Therefore, design is researched and developed a kind of for absorbing impact energy, and the device for reducing collision bring loss seems extremely necessary.
It is complex usually to there is structure in existing train energy absorption device, makes trouble, energy-absorbing effect is bad, and active force is not
Enough steady, dismounting is inconvenient, not re-usable problem.Therefore, it needs to develop a kind of novel train energy absorption device, with full
The current demand of sufficient train security fields.
Utility model content
Energy absorption device is radially dilated the main purpose of the utility model is to provide a kind of thin-wall tube and with its train
Vehicle, to solve, train energy absorption device energy-absorbing effect in the prior art is bad, active force is unstable, not re-usable asks
Topic.
To achieve the goals above, one aspect according to the present utility model provides a kind of thin-wall tube and radially dilates suction
Energy device, comprising: formed punch, formed punch include even power plate, are provided on even power plate multiple for formed punch to be mounted on train body chassis
On the first mounting hole, be installed on even power plate and rush column, the other end for rushing column is installed with pressure head, and the outside of pressure head is equipped with chamfering knot
Structure；Bearing plate is installed with guide frame on bearing plate, is formed in guide frame logical for rushing the guiding that column and pressure head pass through
Road is provided with multiple the second mounting holes for being mounted on bearing plate on the anti-creep bottom of the tooth seat of train on bearing plate；Thin-walled
Flow energy absorbing tube, thin-walled flow energy absorbing tube are set in the outside of guide frame, one end of thin-walled flow energy absorbing tube and bearing plate
Connection；Wherein, pressure head and guide channel face are arranged, and the width of pressure head is greater than the cross-sectional diameter of thin-walled flow energy absorbing tube.
Further, pressure head is in cross, and guide frame includes the more wedge shape guiding being fixed on bearing plate
Column, interval is formed with guide channel between more wedge-shaped guide posts, and guide channel is in cross.
Further, the cross section of column is rushed in cross, rushes the four edges of column respectively along the four edges of cross pressure head
It is extended, rushes column and be an integral molding structure with pressure head.
Further, thin-walled flow energy absorbing tube is integrally cylindrical, thin-walled flow energy absorbing tube and more wedge-shaped guide posts it
Between there are gaps.
Further, it is equipped with installing locating slot in the outside of guide frame on bearing plate, thin-walled flow energy absorbing tube passes through
Interference fit, which plugs, to be mounted in installing locating slot.
Further, even power plate, rush column and round and smooth processing is passed through in the edge of pressure head.
Further, the entire length of formed punch and the length of thin-walled flow energy absorbing tube are of substantially equal.
Another aspect according to the present utility model provides a kind of rail vehicle, including train body, the vehicle of train body
Body chassis front end is equipped with above-mentioned thin-wall tube and radially dilates energy absorption device.
Further, the vehicle body bottom frame front end of train body is equipped with 2-4 above-mentioned thin-wall tubes and radially dilates energy-absorbing dress
It sets, and 2-4 thin-wall tube radially dilates energy absorption device and be arranged symmetrically along the center line of vehicle body bottom frame structure.
Using the technical solution of the utility model, when the front end of bearing plate is by longitudinal direction impact force, guiding knot
Stable displacement occurs in the longitudinal direction under the effect of contraction of bearing plate for structure, and bearing plate pushes thin-walled flow to inhale at the same time
It can manage and also do longitudinal movement, thin-walled flow energy absorbing tube is contacted with the pressure head that outside is equipped with chamfering structure, with indulging for bearing plate
To movement, pressure head makes it that radial press expansion circumferentially occur constantly outwardly against thin-walled flow energy absorbing tube, and is radially expanded
Height is continuously increased, and then reaches height identical with pressure head, the entire impact energy absorption when pressure head bottom surface touches bearing plate
Process terminates, and a plurality of plastic deformation groove is formed on thin-walled flow energy absorbing tube；Also, thin-walled flow energy absorbing tube in whole process
In the position Tensile effect contacted with guide frame, certain stretching plastic deformation occurs.The thin-wall tube radially dilates energy-absorbing
Device mainly passes through the friction energy-absorbing function for dilating plastic deformation and thin-walled flow energy absorbing tube and pressure head of thin-walled flow energy absorbing tube
Absorption shock loading is combined, can be very good to absorb bearing plate bring impact kinetic energy, while giving bearing plate with flat
Steady reaction force, greatly absorbs impact kinetic energy.Entire thin-wall tube radially dilates that energy absorption device structure is simple, production side
Just, thin-walled flow energy absorbing tube is only needed to change after collision, that no replacement is required is reusable for other components.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide a further understanding of the present invention, this is practical
Novel illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model.
In the accompanying drawings:
Fig. 1 is that the thin-wall tube of the utility model embodiment radially dilates the structural schematic diagram of energy absorption device.
Fig. 2 is that the thin-wall tube of the utility model embodiment radially dilates the decomposition texture schematic diagram of energy absorption device.
Fig. 3 is that the thin-wall tube of the utility model embodiment radially dilates the structural schematic diagram of formed punch in energy absorption device.
Fig. 4 shows for the structure that the thin-wall tube of the utility model embodiment radially dilates thin-walled flow energy absorbing tube in energy absorption device
It is intended to.
Fig. 5 is that the thin-wall tube of the utility model embodiment radially dilates the knot of bearing plate and guide frame in energy absorption device
Structure schematic diagram.
Wherein, the above drawings include the following reference numerals:
10, formed punch；11, even power plate；12, the first mounting hole；13, column is rushed；14, pressure head；20, bearing plate；21, guiding knot
Structure；22, the second mounting hole；23, installing locating slot；30, thin-walled flow energy absorbing tube；141, chamfering structure；211, guide channel；
212, wedge-shaped guide post.
Specific embodiment
For the ease of understanding the utility model, below in conjunction with Figure of description and preferred embodiment to the utility model
Work more comprehensively, meticulously describes, but the protection scope of the utility model is not limited to embodiment in detail below.
Unless otherwise defined, all technical terms used hereinafter and the normally understood meaning of those skilled in the art
It is identical." first ", " second " used in the utility model patent application specification and claims and similar word
Language is not offered as any sequence, quantity or importance, and is intended merely to facilitate and distinguishes to corresponding components.Equally,
The similar word such as "one" or " one " does not indicate that quantity limits, but indicates that there are at least one." connection " or " connected "
It is not limited to physics or mechanical connection etc. similar word, but may include electrical connection, either directly
Or it is indirect."upper", "lower", "left", "right" etc. are only used for indicating relative positional relationship, when the absolute position for being described object
After setting change, then the relative positional relationship also correspondingly changes.
Referring to Fig. 1 to Fig. 5, a kind of thin-wall tube of the utility model embodiment radially dilates energy absorption device, including formed punch 10,
Bearing plate 20 and thin-walled flow energy absorbing tube 30.Wherein, formed punch 10 includes even power plate 11, is provided on even power plate 11 multiple for inciting somebody to action
Formed punch 10 is mounted on the first mounting hole 12 on train body chassis, is vertically installed on even power plate 11 and rushes column 13, rushes column 13
The other end is installed with pressure head 14, and the outside of pressure head 14 is equipped with chamfering structure 141；Guide frame is vertically installed on bearing plate 20
21, guide frame 21 is interior to form the guide channel 211 passed through for rushing column 13 and pressure head 14, is provided with multiple be used on bearing plate 20
The second mounting hole 22 bearing plate 20 being mounted on the anti-creep bottom of the tooth seat of train；Thin-walled flow energy absorbing tube 30 is set in guiding
The one end in the outside of structure 21, thin-walled flow energy absorbing tube 30 is connect with bearing plate 20；Pressure head 14 is set with 211 face of guide channel
It sets, and the width of pressure head 14 is greater than the cross-sectional diameter of thin-walled flow energy absorbing tube 30.
Above-mentioned thin-wall tube radially dilates energy absorption device in use, passing through the first mounting hole 12 for even power plate 11 by bolt
It is mounted on the front end of train body chassis, rushes column 13 towards train front, passing through the second mounting hole 22 by bolt will bearing
Bottom plate 20 is mounted on the anti-creep bottom of the tooth seat of train, and 21 face of guide frame is towards formed punch 10, by 30 sets of thin-walled flow energy absorbing tube
It is located at the outside of guide frame 21, and pressure head 14 is placed in the end of guide channel 211, making chamfering structure 141, closely thin-walled is moulded
Become the end of energy absorbing tube 30.When the front end of bearing plate 20 is by longitudinal direction impact force, guide frame 21 is in bearing plate
Stable displacement occurs under 20 effect of contraction in the longitudinal direction, bearing plate 20 pushes thin-walled flow energy absorbing tube 30 at the same time
Longitudinal movement is done, thin-walled flow energy absorbing tube 30 is contacted with the pressure head 14 that outside is equipped with chamfering structure 141, with bearing plate 20
Longitudinal movement, pressure head 14 make it that radial press expansion, and diameter circumferentially occur constantly outwardly against thin-walled flow energy absorbing tube 30
It is continuously increased to expansion height, and then reaches height identical with pressure head 14, when 14 bottom surface of pressure head touches bearing plate 20
Entire impact energy absorption process terminates, and a plurality of plastic deformation groove is formed on thin-walled flow energy absorbing tube 30；Also, in whole process
In the position Tensile effect contacted with guide frame 21 certain stretching plastic deformation occurs for thin-walled flow energy absorbing tube 30.It will
The outside of pressure head 14 is set as chamfering structure 141, and the width of pressure head 14 is straight greater than the cross section of thin-walled flow energy absorbing tube 30
Diameter can also make to deform steady generation, be unlikely to excessively so that guidance thin-walled flow energy absorbing tube 30 is easy to happen and dilates plastic deformation
It is fierce；Guide frame 21 connect integral with bearing plate 20, can play the role of transmitting portions longitudinal force.The thin-walled caliber
Plastic deformation and thin-walled flow energy absorbing tube 30 and pressure head are dilated to dilate that energy absorption device mainly passes through thin-walled flow energy absorbing tube 30
14 friction energy-absorbing function combines absorption shock loading, can be very good to absorb 20 bring impact kinetic energy of bearing plate, together
When give bearing plate 20 with stable reaction force, greatly absorb impact kinetic energy, reduce damage caused by train collision
It loses.It is simple, easy to make that entire thin-wall tube radially dilates energy absorption device structure, and thin-walled flow energy absorbing tube 30 is only needed to change after collision
, that no replacement is required is reusable for other components, effectively saves material, and convenient for disassembly and assembly.
Specifically, referring to figure 1, figure 2 and figure 3, in the present embodiment, pressure head 14 is in cross, and guide frame 21 includes more
Root is fixed at the wedge-shaped guide post 212 on bearing plate 20, and it is logical to be formed with guiding for interval between more wedge-shaped guide posts 212
Road 211, the cross section of guide channel 211 is in cross.When colliding, cross pressure head 14 is in cross guide channel
It is moved in 211, which the direction of motion to bearing plate 20 and thin-walled flow energy absorbing tube 30 can carry out well
Guiding forms orderly controllable plastic deformation groove on thin-walled flow energy absorbing tube 30, and keeps active force more steady.
Referring to figure 1, figure 2 and figure 3, in the present embodiment, the cross section of column 13 is rushed in cross, rushes the four edges point of column 13
It is not extended along the four edges of cross pressure head 14, rushes column 13 and be an integral molding structure with pressure head 14.Even power plate 11 and pressure
Column 13 is rushed according to the structure of thin jumper bar between first 14, then carries and is easy unstability, is not easy to apply load, and be easy to produce after carrying
Raw stress is concentrated, and thin jumper bar is easy to be bent over and fracture；It is cross by the way that the cross section for rushing column 13 to be designed as, and by itself and pressure
First 14 are integrally formed setting, avoid the shortcomings of thin jumper bar, and carrying is stablized, is unlikely to deform.
Referring to Fig. 1, Fig. 2 and Fig. 4, in the present embodiment, thin-walled flow energy absorbing tube 30 is whole cylindrical, and thin-walled flow is inhaled
There are gaps between energy pipe 30 and more wedge-shaped guide posts 212.When concrete application, the internal diameter of thin-walled flow energy absorbing tube 30 is slightly larger than
The diameter of guide frame 21, is easily installed, but the gap between thin-walled flow energy absorbing tube 30 and wedge-shaped guide post 212 again cannot be too
Greatly, if gap will affect greatly very much guide frame 21 to the guiding role of thin-walled flow energy absorbing tube 30, while it also will affect guiding knot
Structure 21 acts on the stretching plastic deformation of thin-walled flow energy absorbing tube 30.
The outside of guide frame 21 is provided with installation on bearing plate 20 and determines in the present embodiment with Fig. 5 referring to fig. 2
Position slot 23, thin-walled flow energy absorbing tube 30 are plugged by interference fit and are mounted in installing locating slot 23.Thin-walled is moulded in this way, facilitating
Become energy absorbing tube 30 to be mounted on bearing plate 20.Even power plate 11 rushes the edge of column 13 and pressure head 14 preferably through round and smooth place
Reason.The entire length of formed punch 10 and the length of thin-walled flow energy absorbing tube 30 are of substantially equal, convenient for load.
In the embodiment not shown of the utility model one, a kind of rail vehicle, including train body are provided, in train vehicle
The vehicle body bottom frame front end of body is equipped with above-mentioned thin-wall tube and radially dilates energy absorption device.By before the vehicle body bottom frame of train body
The thin-wall tube of end installation the utility model radially dilates energy absorption device, absorbs impact when rail vehicle collides well
Power effectively reduces loss caused by collision accident.
In order to further increase the energy-absorbing effect of rail vehicle, causality loss, in the present embodiment, train body are reduced
Vehicle body bottom frame front end is equipped with 2-4 thin-wall tube and radially dilates energy absorption device, and 2-4 thin-wall tube radially dilates energy absorption device edge
The center line of vehicle body bottom frame structure is arranged symmetrically.In this way, stress is more balanced when vehicle body bottom frame can be made to collide, more efficiently
Collision impact is absorbed, causality loss is reduced.
In general, the thin-wall tube of the utility model radially dilates energy absorption device and has at least the following advantages: overall structure
Simple with manufacturing process, active force is steady, installation, convenient disassembly, and main member may be reused.In addition, the thin-walled
Caliber to dilate energy absorption device will dilate energy-absorbing and friction energy-absorbing combine, given full play to the energy-absorbing effect of device, will
It is applied to train etc., and there may be the fields of collision accident, can substantially reduce accident harm, reduce unnecessary loss of property.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (9)
1. a kind of thin-wall tube radially dilates energy absorption device characterized by comprising
Formed punch (10), the formed punch (10) include even power plate (11), and multiple be used for the punching is provided on the even power plate (11)
Head (10) is mounted on the first mounting hole (12) on train body chassis, is installed on the even power plate (11) and rushes column (13), institute
It states and rushes the other end of column (13) and be installed with pressure head (14), the outside of the pressure head (14) is equipped with chamfering structure (141)；
Bearing plate (20) is installed with guide frame (21) on the bearing plate (20), is formed in the guide frame (21)
For the guide channel (211) for rushing column (13) and the pressure head (14) and passing through, multiple use are provided on the bearing plate (20)
In the second mounting hole (22) on the anti-creep bottom of the tooth seat that the bearing plate (20) is mounted on train；
Thin-walled flow energy absorbing tube (30), the thin-walled flow energy absorbing tube (30) are set in the outside of the guide frame (21), institute
The one end for stating thin-walled flow energy absorbing tube (30) is connect with the bearing plate (20)；
Wherein, the pressure head (14) and the guide channel (211) face are arranged, and the width of the pressure head (14) is greater than described
The cross-sectional diameter of thin-walled flow energy absorbing tube (30).
2. thin-wall tube according to claim 1 radially dilates energy absorption device, which is characterized in that the pressure head (14) is in cross
Type, the guide frame (21) include the more wedge-shaped guide posts (212) being fixed on the bearing plate (20), and more
Interval forming is stated guide channel (211) between the wedge shape guide post (212), and the guide channel (211) is in cross.
3. thin-wall tube according to claim 2 radially dilates energy absorption device, which is characterized in that described to rush the transversal of column (13)
Face is in cross, and the four edges for rushing column (13) are extended along the four edges of the cross pressure head (14) respectively, institute
It states and rushes column (13) and be an integral molding structure with the pressure head (14).
4. thin-wall tube according to claim 2 radially dilates energy absorption device, which is characterized in that the thin-walled flow energy absorbing tube
(30) whole cylindrical, there are gaps between the thin-walled flow energy absorbing tube (30) and the more wedge-shaped guide posts (212).
5. thin-wall tube according to claim 1 radially dilates energy absorption device, which is characterized in that on the bearing plate (20)
Installing locating slot (23) are equipped in the outside of the guide frame (21), the thin-walled flow energy absorbing tube (30) passes through interference fit
It plugs and is mounted in the installing locating slot (23).
6. thin-wall tube according to claim 1 radially dilates energy absorption device, which is characterized in that the even power plate (11), institute
It states and rushes the edge of column (13) and the pressure head (14) and pass through round and smooth processing.
7. thin-wall tube according to claim 1 radially dilates energy absorption device, which is characterized in that the entirety of the formed punch (10)
Length and the length of the thin-walled flow energy absorbing tube (30) are of substantially equal.
8. a kind of rail vehicle, including train body, which is characterized in that the installation of the vehicle body bottom frame front end of the train body just like
Thin-wall tube of any of claims 1-7 radially dilates energy absorption device.
9. rail vehicle according to claim 8, which is characterized in that the vehicle body bottom frame front end of the train body is equipped with
The 2-4 thin-wall tubes radially dilate energy absorption device, and the 2-4 thin-wall tubes radially dilate energy absorption device along vehicle body bottom frame knot
The center line of structure is arranged symmetrically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821698399.5U CN208931347U (en) | 2018-10-19 | 2018-10-19 | Thin-wall tube radially dilates energy absorption device and the rail vehicle with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821698399.5U CN208931347U (en) | 2018-10-19 | 2018-10-19 | Thin-wall tube radially dilates energy absorption device and the rail vehicle with it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208931347U true CN208931347U (en) | 2019-06-04 |
Family
ID=66725170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821698399.5U Expired - Fee Related CN208931347U (en) | 2018-10-19 | 2018-10-19 | Thin-wall tube radially dilates energy absorption device and the rail vehicle with it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208931347U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113335331A (en) * | 2021-06-25 | 2021-09-03 | 中车唐山机车车辆有限公司 | Energy absorption device and rail vehicle |
-
2018
- 2018-10-19 CN CN201821698399.5U patent/CN208931347U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113335331A (en) * | 2021-06-25 | 2021-09-03 | 中车唐山机车车辆有限公司 | Energy absorption device and rail vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10556603B2 (en) | Collision energy absorption apparatus for rail vehicles | |
| CN203854597U (en) | Car energy absorption box and car with same | |
| CN102514588A (en) | Troubleshooting and energy absorbing device and leading car of motor train unit | |
| CN105083317A (en) | Car coupler assembly and rail car with same | |
| CN208931347U (en) | Thin-wall tube radially dilates energy absorption device and the rail vehicle with it | |
| CN106364521A (en) | Combined type energy absorption devices special for rail vehicle and rail vehicle provided with same | |
| CN105620505B (en) | It is oriented to the special endergonic structure of combined type and its application ON TRAINS | |
| CN102180181A (en) | Method for realizing collision threshold of special train collision energy-absorbing component | |
| CN110539773B (en) | Collision interface energy absorption device and rail train | |
| CN105270474A (en) | Front anti-collision beam assembly of automobile | |
| CN109305120B (en) | Assembled self-locking multi-cell energy absorber | |
| CN103192845A (en) | Crawling and deviating resistant energy absorbing device | |
| CN110598341B (en) | Design method of induced energy absorption device | |
| CN210971086U (en) | Energy-absorbing anti-climbing device for railway vehicle | |
| CN206307043U (en) | A kind of collision energy-absorbing device used for rail vehicle | |
| EP3357785B1 (en) | Energy absorption device and rail vehicle having same | |
| WO2019242363A1 (en) | Anti-crawling energy absorption device and railway vehicle having same | |
| CN107380192A (en) | A kind of energy absorption device for coupling necking down and spalling deformation | |
| CN107336721A (en) | A kind of energy absorption device based on necking down plastic deformation | |
| CN203681452U (en) | Energy absorption box of bumper | |
| CN110816579A (en) | Energy-absorbing anti-climbing device for railway vehicle | |
| CN207191172U (en) | A kind of automobile longitudinal girder | |
| CN102180135A (en) | Automobile front anti-collision beam assembly | |
| CN203237253U (en) | Anti-climbing and anti-slanting energy absorption device | |
| CN206255018U (en) | A kind of anti-climbing energy-absorbing device for the vehicles |
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: 20190604 Termination date: 20191019 |