CN208746070U - A kind of collapsible stroller vehicle frame and collapsible stroller - Google Patents
A kind of collapsible stroller vehicle frame and collapsible stroller Download PDFInfo
- Publication number
- CN208746070U CN208746070U CN201821425066.5U CN201821425066U CN208746070U CN 208746070 U CN208746070 U CN 208746070U CN 201821425066 U CN201821425066 U CN 201821425066U CN 208746070 U CN208746070 U CN 208746070U
- Authority
- CN
- China
- Prior art keywords
- wheel
- bracket
- vehicle frame
- collapsible stroller
- rod
- 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
Abstract
The utility model provides a kind of collapsible stroller vehicle frame and collapsible stroller, the collapsible stroller vehicle frame includes front-wheel support, rear wheel support, side handrail, push rod, rear pole, rear wheel support includes rear-wheel lower bracket and rear-wheel upper bracket, the upper end of rear-wheel lower bracket and front-wheel support are rotatablely connected, the lower end of rear-wheel lower bracket and the lower end of rear-wheel upper bracket are rotatablely connected, the upper end of front-wheel support and the lower end of side handrail are rotatablely connected, the upper end of rear-wheel upper bracket and side handrail are rotatablely connected and the different axis of its center of rotation is in the center of rotation of front-wheel support and side handrail, the different axis in the upper end of side handrail and the upper end of rear pole is rotatablely connected push rod, the lower end of rear pole and rear-wheel upper bracket are rotatablely connected.The utility model enables to stroller frame structure to become simply by using above structure, and folding is more convenient and folded small in size, and storage easy to carry brings great convenience to user；In addition, above structure is when cart is unfolded, whole structure is more stable.
Description
Technical field
The utility model relates to cart technical fields, and in particular to a kind of collapsible stroller vehicle frame and collapsible stroller.
Background technique
Cart is a kind of common tool in daily life, such as the cart of shopping, then for example for for baby children
Youngster lies the cart etc. of seat.Storage for the ease of carrying and when not in use, such as baby stroller, are usually arranged as foldable
Formula.By folding up cart, the space occupied is needed to reduce cart.
Many kinds of, but itself or the complex and structural strength in structure of the vehicle frame of existing foldable wheelbarrow
Not high or fold up very inconvenient, and folded volume is larger, it has not been convenient to place and accommodate, can not be suitable for user's
Placement space, it is inconvenient that these defects can be caused to user, cause user experience bad, be unfavorable for marketing.
Utility model content
The purpose of this utility model is to provide a kind of collapsible stroller vehicle frames, it is intended to solve folding pushing in the prior art
Bassinet structure is complicated, folds inconvenient and larger volume after folding technical problem；Meanwhile the purpose of this utility model also resides in one
Kind uses the collapsible stroller of above-mentioned collapsible stroller vehicle frame.
To achieve the above object, the utility model a kind of perambulator cart skeleton the technical solution adopted is that: it is described can
Folding trolley vehicle frame, including front-wheel support, rear wheel support, side handrail, push rod, rear pole, rear wheel support include rear-wheel lower bracket
With rear-wheel upper bracket, the upper end of rear-wheel lower bracket and front-wheel support are rotatablely connected, the lower end of rear-wheel lower bracket and rear-wheel upper bracket
Lower end rotation connection, the lower end of the upper end of front-wheel support and side handrail is rotatablely connected, the upper end of rear-wheel upper bracket and side handrail
The rotation connection and different axis of its center of rotation is in the center of rotation of front-wheel support and side handrail, the upper end of side handrail and rear pole it is upper
Different axis rotation connection push rod is held, lower end and the rear-wheel upper bracket of rear pole are rotatablely connected and prop up under the different axis of its center of rotation and rear-wheel
Frame and the center of rotation of rear-wheel upper bracket and the center of rotation of rear-wheel upper bracket and side handrail.
The front-wheel support includes left front wheel support and off-front wheel bracket；The side handrail includes that left armrests and right side are helped
Hand；The rear-wheel lower bracket includes left rear wheel lower bracket and off hind wheel lower bracket；The collapsible stroller vehicle frame further includes in
Between position be rotatablely connected and lower supporting rod arranged in a crossed manner and upper strut composition cross strut, the both ends difference of the lower supporting rod
It is rotatably connected to upper left U-shaped part and bottom right U-shaped part, upper left U-shaped part and the upper end of left front wheel support and the lower end of left armrests are same
Axis rotation connection, bottom right U-shaped part is rotated coaxially with the lower end of the lower end of off hind wheel lower bracket and off hind wheel upper bracket to be connect；It is described
The both ends of upper strut are rotatably connected to lower-left U-shaped part and upper right U-shaped part, the lower end of lower-left U-shaped part and left rear wheel lower bracket respectively
And the lower end of left rear wheel restocking rotates coaxially connection, upper right U-shaped part and the upper end of off-front wheel bracket and the lower end of right armrest are same
Axis rotation connection.
The collapsible stroller vehicle frame further includes preceding handrail, the preceding handrail include in preceding handrail bar and it is symmetrically arranged and
Ribbed insert, left front ribbed insert are not connected with preceding handrail before the left front ribbed insert at bar both ends, the right side in handrail before being rotatably connected on
One end of middle bar is rotatably connected to left plug, and one end of bar is rotatably connected to right insert in handrail before ribbed insert is not connected before the right side
Head, left plug, right plug respectively with left socket, right socket inserting cooperate, left socket, right socket respectively with left armrests, right side
Handrail rotation connection.
The push rod includes left push rod and right push rod；The collapsible stroller vehicle frame further includes that the left side being mutually rotatablely connected pushes away
And right handle, the left handle, right handle are rotationally connected with left push rod and right push rod respectively.
Locking piece is equipped between the left handle and right handle, the locking piece is pushed away for the left handle of locking and unlocking and the right side
?.
The rear pole includes left back strut and right rear pole, the left back strut and left armrests, right rear pole and right
Be equipped with locking mechanism for locking vehicle vehicle frame between side handrail, the locking piece unlock left handle and right handle and downwards to
When preceding pressure push rod, the locking mechanism automatically terminates the locking to the vehicle vehicle frame.
The collapsible stroller vehicle frame further includes the left cushion rod sliding sleeve being rotatablely connected respectively with left armrests, right armrest
With right cushion sliding sleeve, sliding is equipped with left cushion rod, right cushion rod, institute respectively in the left cushion rod sliding sleeve, right cushion rod sliding sleeve
State left cushion rod, one end of right cushion rod is rotationally connected with left back support rod, right back support rod respectively.
Folding M shape back support bar is also rotatably connected on the left cushion rod and right cushion rod.
Connecting rod is rotatably connected between the left front wheel support and off-front wheel bracket, the connecting rod includes the left side mutually rotated
Connecting rod and right connecting rod are equipped with left draw bar between left connecting rod and left front wheel support, between right connecting rod and off-front wheel bracket and the right side are led
Draw bar, the lower end of left draw bar and left connecting rod are rotatablely connected, and the upper end of left draw bar is rotatably connected to left U-shaped part, left U-shaped part with
The connection of the near front wheel holder pivots, the lower end of right draw bar and right connecting rod are rotatablely connected, and the upper end of right draw bar is rotatably connected to right U
Shape part, right U-shaped part are connect with off-front wheel holder pivots.
A kind of collapsible stroller, including above-mentioned Collapsible trailer vehicle frame.
The beneficial effects of the utility model are: the utility model enables to stroller frame knot by using above structure
Structure becomes simply, and folding is more convenient and folded small in size, and storage easy to carry brings great side to user
Just；In addition, above structure is when cart is unfolded, whole structure is more stable.
Detailed description of the invention
Fig. 1 is a kind of perspective view of collapsible stroller vehicle frame of the utility model；
Fig. 2 is a kind of left view of collapsible stroller vehicle frame of the utility model；
Fig. 3 is a kind of right view of collapsible stroller vehicle frame of the utility model
Fig. 4 is a kind of main view of collapsible stroller vehicle frame of the utility model；
Fig. 5 is a kind of top view of collapsible stroller vehicle frame of the utility model；
Fig. 6 is a kind of semi-folded status diagram of collapsible stroller vehicle frame of the utility model；
Fig. 7 is a kind of status diagram of collapsible stroller vehicle frame folded completely of the utility model.
Specific embodiment
The embodiments of the present invention is described further with reference to the accompanying drawing.
A kind of collapsible stroller vehicle frame provided in this embodiment, in this embodiment, the "front", "rear" " left side " that is related to,
Directions such as " right sides ", when being user's cart towards direction, i.e. user's cart when its face direction be front, as
Benchmark, to illustrate above-mentioned all directions.
Specifically, as shown in Fig. 1-Fig. 7, the collapsible stroller vehicle frame include front-wheel support 1, rear wheel support 2, side handrail 3,
Preceding handrail 4, push rod 5, handle 6, rear pole 7, cushion rod sliding sleeve 8, the front component 9 for being mounted on front-wheel support 1 and installation
Wheel assembly 10 on rear wheel support 2.
Side handrail 3 includes left armrests 3-1 and right armrest 3-2；Before front-wheel support 1 includes left front wheel support 1-1 and is right
Wheel support 1-2；Rear wheel support 2 include rear-wheel lower bracket and rear-wheel upper bracket, rear-wheel lower bracket include left rear wheel lower bracket 2-1 and
Off hind wheel lower bracket 2-2, rear-wheel upper bracket include left rear wheel upper bracket 2-3 and off hind wheel upper bracket 2-4.Off hind wheel lower bracket 2-
2 upper end and off-front wheel bracket 1-2 are rotatablely connected, and the upper end of off-front wheel bracket 1-2 and the lower end of right armrest 3-2 rotate and connect
It connects, the lower end of off hind wheel lower bracket 2-2 and the lower end of off hind wheel upper bracket 2-3 are rotatablely connected, the upper end of off hind wheel upper bracket 2-3
With right armrest 3-2 rotation connection and the different axis of its center of rotation is in the center of rotation of off-front wheel bracket 1-2 and right armrest 3-2；
The upper end of left rear wheel lower bracket 2-1 and left front wheel support 1-1 are rotatablely connected, the upper end of left front wheel support 1-1 and left armrests 3-1
Lower end rotation connection, the lower end of the lower end of left rear wheel lower bracket 2-1 and left rear wheel upper bracket 2-3 are rotatablely connected, on left rear wheel
The upper end of bracket 2-3 and left armrests 3-1 are rotatablely connected and the different axis of center of rotation is in left front wheel support 1-1 and 3-1 left armrests
Center of rotation.
Push rod 5 includes left push rod 5-1 and right push rod 5-2；Rear pole 7 includes left back strut 7-1 and right rear pole 7-2.It is right
The different axis in the upper end of rear pole 7-2 and the upper end of right armrest 3-2 is rotatablely connected right push rod 5-2；The upper end and a left side of left back strut 7-1
The different axis in the upper end of side handrail 3-1 is rotatablely connected left push rod 5-1.Turn to be connected with cape bar between left push rod 5-1 and right push rod 5-2
11, the left end of cape bar 11 rotates coaxially and connect with left push rod 5-1 and left armrests 3-1, the right end of cape bar 11 and right push rod
5-2 and right armrest 3-2 rotate coaxially connection.
Handle 6 includes the left handle 6-1 and right handle 6-2 being mutually rotatablely connected, and the left handle 6-1, right handle 6-2 divide
It is not rotationally connected with left push rod 5-1 and right push rod 5-2.In the present embodiment, locking is equipped between left handle 6-1 and right handle 6-2
Part, locking piece are used to be equipped with locking piece between locking and unlocking left handle 6-1 and right handle 6-2.In the present embodiment, locking piece is
Unblock button 12.
In the present embodiment, it is equipped between left back strut 7-1 and left armrests 3-1, right rear pole 7-2 and right armrest 3-2
For locking the locking mechanism of vehicle vehicle frame, when locking piece unlocks left handle 6-1 and right handle 6-2 and presses push rod forward downwards,
Locking mechanism automatically terminates the locking to the vehicle vehicle frame.
Cushion rod sliding sleeve 8 is including left cushion rod sliding sleeve and by cushion rod sliding sleeve, left cushion rod sliding sleeve and by cushion rod sliding sleeve
2-4 on left rear wheel upper bracket 2-3 and off hind wheel upper bracket is rotatably connected on respectively, in left cushion rod sliding sleeve, right cushion rod sliding sleeve
Respectively sliding be equipped with left cushion rod 13-1, right cushion rod 13-2, left cushion rod 13-1, right cushion rod 13-2 one end rotate respectively
It is connected to left back support rod 7-1, right back support rod 7-2.It is also rotatably connected on left cushion rod 13-1, right cushion rod 12 foldable
M shape back support bar 14.
In the present embodiment, the collapsible stroller vehicle frame further include be rotatablely connected by intermediate position and it is arranged in a crossed manner under
The cross strut of strut 15-1 and upper strut 15-2 composition, the both ends of lower supporting rod 15-1 are rotatably connected to upper left U-shaped part 16- respectively
1 and bottom right U-shaped part 16-2, upper left U-shaped part 16 rotated coaxially with the upper end of left front wheel support 1-1 and the lower end of left armrests 3-1
Connection, bottom right U-shaped part 16-2 are rotated coaxially with the lower end of the lower end of off hind wheel lower bracket 2-2 and off hind wheel upper bracket 2-4 and are connect；
The both ends of upper strut 15-2 are rotatably connected to lower-left U-shaped part 17-1 and upper right U-shaped part 17-2, lower-left U-shaped 17-1 part and a left side respectively
The lower end of rear-wheel lower bracket 2-1 and the lower end of left rear wheel restocking 2-3 rotate coaxially connection, upper right U-shaped part 17-2 and off-front wheel branch
The upper end of frame 1-2 and the lower end of right armrest 3-2 rotate coaxially connection.
Preceding handrail 18 includes bar 18-1 and symmetrically arranged and 18-1 bar both ends in handrail before being rotatably connected in preceding handrail
Left front ribbed insert 18-2, it is right before ribbed insert 18-3, left front ribbed insert 18-2 it is not connected before in handrail bar 18-1 one
End is rotatably connected to left plug 19-1, and one end of bar is rotatably connected to right plug in handrail before ribbed insert 18-3 is not connected before the right side
19-2, left plug 19-1, right plug 19-2 are inserted with left socket 20-1, right socket 20-2 respectively to be cooperated, and left socket 20-1, the right side are inserted
Seat 20-2 is rotatablely connected with left armrests 3-1, right armrest 3-2 respectively.
In the present embodiment, connecting rod is rotatably connected between left front wheel support 1-1 and off-front wheel bracket 1-2, connecting rod includes phase
The left connecting rod 21-1 and right connecting rod 21-2 mutually rotated, between left connecting rod 21-1 and left front wheel support 1-1, before right connecting rod 21-2 and the right side
Left draw bar 22-1 and right draw bar 22-2 is equipped between wheel support 1-2, the lower end of left draw bar 22-1 and left connecting rod 21-1 turn
Dynamic connection, the upper end of left draw bar 22-1 are rotatably connected to left U-shaped part 23-1, left U-shaped part 23-1 and left front wheel support 1-1 rotation
Connection, the lower end of right draw bar 22-2 and right connecting rod 21-2 are rotatablely connected, and the upper end of right draw bar 22-2 is rotatably connected to right U-shaped
Part 23-2, right U-shaped part 23-2 and off-front wheel bracket 1- rotation connection.
When collapsible stroller vehicle frame in the present embodiment is folded, left handle 6-1 and the right side are released by locking piece first
Locking relation between handle 6-2, then by left handle 6-1 and right handle 6-2 downwards and press forward so that left back strut 7-1
Locking mechanism automatic unlocking between left push rod 5-1 and right rear pole 7-2 and right push rod 5-2, then by left push rod 5-1 and the right side
Push rod 5-2 continues to push, and collapsible stroller frame state is as shown in Figure 6 at this time.Then, continue forward and be folded down entire vehicle
The complete folding of entire collapsible stroller vehicle frame can be realized by the interaction relation of above-mentioned all parts in frame, after folding completely
State it is as shown in Figure 7.
A kind of specific embodiment of collapsible stroller of the utility model, the collapsible stroller include collapsible stroller vehicle
Frame, the collapsible stroller vehicle frame and a kind of above-mentioned structure of the collapsible stroller vehicle frame as described in the examples of foldable chassis
Function is identical, to avoid repeating, is not repeating herein.
Obviously, the above embodiments of the present invention is used for the purpose of clearly illustrating examples for clearly illustrating the present invention, and
It is not limitations of the embodiments of the present invention.For those of ordinary skill in the art, in above description
On the basis of can also make other variations or changes in different ways.There is no need and unable to give all embodiments
Exhaustion.Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention etc., should be included in
Within the protection scope of the utility model claims.
Claims (10)
1. a kind of collapsible stroller vehicle frame, it is characterised in that: including front-wheel support, rear wheel support, side handrail, push rod, rear pole,
Rear wheel support includes rear-wheel lower bracket and rear-wheel upper bracket, and the upper end of rear-wheel lower bracket and front-wheel support are rotatablely connected, under rear-wheel
The lower end of bracket and the lower end of rear-wheel upper bracket are rotatablely connected, and the upper end of front-wheel support and the lower end of side handrail are rotatablely connected, after
The upper end and side handrail for taking turns upper bracket are rotatablely connected and the different axis of its center of rotation is in the center of rotation of front-wheel support and side handrail, side
The different axis in the upper end of handrail and the upper end of rear pole is rotatablely connected push rod, and the lower end of rear pole is rotatablely connected with rear-wheel upper bracket and it
The different axis of center of rotation and rear-wheel lower bracket and the center of rotation of rear-wheel upper bracket and the center of rotation of rear-wheel upper bracket and side handrail.
2. collapsible stroller vehicle frame according to claim 1, it is characterised in that: the front-wheel support includes left front wheel support
With off-front wheel bracket；The side handrail includes left armrests and right armrest；The rear-wheel lower bracket includes left rear wheel lower bracket
With off hind wheel lower bracket；The collapsible stroller vehicle frame further includes be rotatablely connected by intermediate position and lower supporting rod arranged in a crossed manner
With the cross strut of upper strut composition, the both ends of the lower supporting rod are rotatably connected to upper left U-shaped part and bottom right U-shaped part respectively, left
Upper U-shaped part is rotated coaxially with the lower end of the upper end of left front wheel support and left armrests to be connect, bottom right U-shaped part and off hind wheel lower bracket
Lower end and the lower end of off hind wheel upper bracket rotate coaxially connection；The both ends of the upper strut are rotatably connected to lower-left U-shaped respectively
Part and upper right U-shaped part, lower-left U-shaped part is rotated coaxially with the lower end of the lower end of left rear wheel lower bracket and left rear wheel restocking to be connect, right
Upper U-shaped part is rotated coaxially with the lower end of the upper end of off-front wheel bracket and right armrest to be connect.
3. collapsible stroller vehicle frame according to claim 2, it is characterised in that: before the collapsible stroller vehicle frame further includes
Handrail, the preceding handrail include bar and left front handrail that is symmetrically arranged and being rotatably connected on bar both ends in preceding handrail in preceding handrail
Ribbed insert before connecting rod, the right side, one end of bar is rotatably connected to left plug, handrail before the right side in handrail before left front ribbed insert is not connected
One end of bar is rotatably connected to right plug in handrail before connecting rod is not connected, and left plug, right plug are inserted with left socket, right socket respectively
Assembly is closed, and left socket, right socket are rotatablely connected with left armrests, right armrest respectively.
4. collapsible stroller vehicle frame according to claim 3, it is characterised in that: the push rod includes that left push rod and the right side push away
Bar；The collapsible stroller vehicle frame further includes the left handle and right handle being mutually rotatablely connected, the left handle, right handle difference
It is rotationally connected with left push rod and right push rod.
5. collapsible stroller vehicle frame according to claim 4, it is characterised in that: be equipped between the left handle and right handle
Locking piece, the locking piece are used for the left handle of locking and unlocking and right handle.
6. collapsible stroller vehicle frame according to claim 5, it is characterised in that: the rear pole includes left back strut and the right side
Rear pole is equipped with the lock for locking vehicle vehicle frame between the left back strut and left armrests, right rear pole and right armrest
Determine mechanism, when the locking piece unlocks left handle and right handle and presses push rod forward downwards, the locking mechanism is automatically terminated pair
The locking of the vehicle vehicle frame.
7. collapsible stroller vehicle frame according to claim 6, it is characterised in that: the collapsible stroller vehicle frame further includes point
The left cushion rod sliding sleeve and right cushion sliding sleeve not being rotatablely connected with left armrests, right armrest, the left cushion rod sliding sleeve, right seat
Sliding is equipped with left cushion rod, right cushion rod, one end company of rotation respectively of the left cushion rod, right cushion rod respectively in lining bar sliding sleeve
It is connected to left back support rod, right back support rod.
8. collapsible stroller vehicle frame according to claim 7, it is characterised in that: on the left cushion rod and right cushion rod also
It is rotatably connected to folding M shape back support bar.
9. collapsible stroller vehicle frame according to claim 2, it is characterised in that: the left front wheel support and off-front wheel bracket
Between be rotatably connected to connecting rod, the connecting rod includes the left connecting rod mutually rotated and right connecting rod, left connecting rod and left front wheel support it
Between, left draw bar and right draw bar are equipped between right connecting rod and off-front wheel bracket, the lower end of left draw bar and left connecting rod rotation connect
It connects, the upper end of left draw bar is rotatably connected to left U-shaped part, and left U-shaped part is connect with the near front wheel holder pivots, the lower end of right draw bar
It is rotatablely connected with right connecting rod, the upper end of right draw bar is rotatably connected to right U-shaped part, and right U-shaped part is connect with off-front wheel holder pivots.
10. a kind of collapsible stroller, it is characterised in that: including the described in any item Collapsible trailer vehicle frames of such as right 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821425066.5U CN208746070U (en) | 2018-08-31 | 2018-08-31 | A kind of collapsible stroller vehicle frame and collapsible stroller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821425066.5U CN208746070U (en) | 2018-08-31 | 2018-08-31 | A kind of collapsible stroller vehicle frame and collapsible stroller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208746070U true CN208746070U (en) | 2019-04-16 |
Family
ID=66081608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821425066.5U Expired - Fee Related CN208746070U (en) | 2018-08-31 | 2018-08-31 | A kind of collapsible stroller vehicle frame and collapsible stroller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208746070U (en) |
-
2018
- 2018-08-31 CN CN201821425066.5U patent/CN208746070U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106915376B (en) | A kind of collapsible stroller vehicle frame and collapsible stroller | |
| CN107444457B (en) | Foldable baby stroller | |
| CN209176766U (en) | Multifunctional barrow for children | |
| CN203318469U (en) | Folding baby carriage rack body | |
| CN205769520U (en) | A kind of Foldable portable type children trolley | |
| CN208746070U (en) | A kind of collapsible stroller vehicle frame and collapsible stroller | |
| CN203511740U (en) | Reversing foldable stroller | |
| CN107054432B (en) | Foldable baby carriage | |
| CN106741094B (en) | Children's barrow | |
| CN209112242U (en) | Baby stroller | |
| CN209112239U (en) | Baby carriage framework | |
| CN207790805U (en) | A kind of baby stroller | |
| CN207565659U (en) | Foldable baby cart | |
| CN207579927U (en) | Baby handcart | |
| CN104192189B (en) | Children's barrow | |
| CN108674550B (en) | Frame and children tricycle | |
| CN207607528U (en) | A kind of baby-carrier framework | |
| CN106741092B (en) | Foldable baby stroller | |
| CN207737356U (en) | A kind of simple type stroller vehicle frame | |
| CN201646813U (en) | Baby trolley | |
| CN106741093B (en) | Foldable baby stroller | |
| CN108016480B (en) | Foldable baby stroller | |
| CN106741099B (en) | Foldable infant stroller | |
| CN203228814U (en) | Foldable frame of baby carriage | |
| CN213921189U (en) | Foldable cart frame and foldable cart |
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: 20190416 Termination date: 20200831 |