CN209208938U - A kind of perambulator - Google Patents
A kind of perambulator Download PDFInfo
- Publication number
- CN209208938U CN209208938U CN201821538569.3U CN201821538569U CN209208938U CN 209208938 U CN209208938 U CN 209208938U CN 201821538569 U CN201821538569 U CN 201821538569U CN 209208938 U CN209208938 U CN 209208938U
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- Prior art keywords
- connecting rod
- frame
- shaft
- wheel
- rotatably connected
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Abstract
The utility model discloses a kind of perambulator, including vehicle frame, steering yoke, steering yoke is rotatably connected at vehicle frame front, further includes the first connecting rod being rotatablely arranged on vehicle frame, second connecting rod；Left connecting rod rotates with the left part of first connecting rod, second connecting rod connect respectively；Right connecting rod rotates with the right part of first connecting rod, second connecting rod connect respectively；Revolver frame, is rotatably connected at left connecting rod；Left steering bar, left part are rotatably connected at revolver frame；Right wheel frame, is rotatably connected at right connecting rod；Right turn bar, right part are rotatably connected at right wheel frame；The wheel shaft of the near front wheel is rotatably connected at revolver frame, the wheel shaft of off-front wheel is rotatably connected at right wheel frame, the steering driving lever for driving left steering bar, right turn bar to move left and right rotated with steering yoke is provided on steering yoke, when perambulator is when turning to, the near front wheel and off-front wheel with respect to ground inclination so that turning radius is smaller and traveling, turn to it is more steady.
Description
Technical field
The utility model relates to a kind of perambulators.
Background technique
Children's electric motor vehicle is a kind of perambulator played for children's ride-on being driven by motor.Chinese patent CN201745693U
A kind of children's electric motor vehicle is disclosed, including vehicle frame, vehicle wheel component, the power device for driving vehicle wheel component to rotate, wheel group
Part includes the right wheel of the left wheel for being set to the left side of vehicle frame, the right side for being set to vehicle frame, is additionally provided with difference on vehicle frame
Speed variator.Due to the presence of differential gear, left wheel can advance at different rates with right wheel, so as to reduce perambulator
Turning radius in turning, but the baby carriage structure of this structure is complicated, it is inconvenient for use.
Summary of the invention
In view of the above problems, the object of the present invention is to provide a kind of perambulator, turning radius is smaller and travels, turns to
It is relatively steady.
In order to achieve the above objectives, the utility model adopts the following technical solution:
A kind of perambulator, it is described including vehicle frame, steering yoke, the near front wheel, off-front wheel and the rear-wheel for being connected to the vehicle frame rear portion
Steering yoke is rotatably connected at the vehicle frame front, the perambulator further include:
First connecting rod is rotatablely arranged on the vehicle frame；
Second connecting rod is rotatablely arranged on the vehicle frame；
Left connecting rod rotates with the left part of the left part of the first connecting rod and the second connecting rod connect respectively；
Right connecting rod rotates with the right part of the right part of the first connecting rod and the second connecting rod connect respectively；
Revolver frame is rotatably connected at the left connecting rod；
Left steering bar, left part are rotatably connected at the revolver frame；
Right wheel frame is rotatably connected at the right connecting rod；And
Right turn bar, right part are rotatably connected at the right wheel frame；
Wherein, described the near front wheel and the off-front wheel are respectively provided with wheel shaft, and the wheel shaft of described the near front wheel can be around Pivot Point Center
Line is rotationally connected with the revolver frame, and the wheel shaft of the off-front wheel can be rotationally connected with the right wheel around self-axis line
Frame is provided on the steering yoke with steering yoke rotation for driving the left steering bar, the right turn bar to move left and right
Steering driving lever, it is described turn to driving lever, the right part of the left steering bar, the right turn bar left part relatively rotate two-by-two
Ground connects or rotates coaxially connection, and when the perambulator is when turning to, described the near front wheel and the off-front wheel are with respect to ground inclination.
In one embodiment, the lower end for turning to driving lever and being fixedly connected on the steering yoke, the steering driving lever tool
There are the rear side positioned at the steering yoke lower end or the connection end of front side, the connection end vertically extends, described
Connection end be rotationally inserted in the right part of the left steering bar, the right turn bar left part in.
In one embodiment, the first rotating shaft that there is axial line to vertically extend on the top of the revolver frame, it is described
Revolver frame is rotatably connected at the left connecting rod by the first rotating shaft；The top of the right wheel frame has axial line along upper
The second shaft that lower direction extends, the right wheel frame are rotatably connected at the right connecting rod by second shaft.
Preferably, the first rotating shaft, second shaft upper end be respectively equipped with limited cover.
In one embodiment, the revolver frame has the connecting rod to extend back, the rear end of the connecting rod of the revolver frame
Portion vertically extends and is rotationally plugged in the left part of the left steering bar；The right wheel frame, which has, to extend back
Connecting rod, the rear end of the connecting rod of the right wheel frame vertically extends and is rotationally plugged in the right side of right turn bar
In end.
In one embodiment, the first connecting rod and the second connecting rod are setting up and down, the left connecting rod and the right company
Bar left and right settings and the left and right sides for being located at the steering yoke.
Preferably, the first connecting rod is rotatably connected at the vehicle frame by first rotating shaft, and the second connecting rod is logical
It crosses the second shaft and is rotatably connected at the vehicle frame, the left connecting rod is rotatably connected at described first by third shaft
The left part of connecting rod, the left connecting rod are rotatably connected at the left part of the second connecting rod, the right side by the 4th shaft
Connecting rod is rotatably connected at the right part of the first connecting rod by the 5th shaft, and the right connecting rod can be turned by the 6th shaft
It is connected to the right part of the second connecting rod, the first rotating shaft, second shaft, the third shaft, described dynamicly
The axial line of four shafts, the 5th shaft and the 6th shaft extends along the front-rear direction of perambulator.
In one embodiment, the perambulator further includes the first shock-absorbing part being connected between the vehicle frame and the revolver frame
And it is connected to the second shock-absorbing part between the vehicle frame and the right wheel frame.
Preferably, the first shock-absorbing part includes the first hydraulic spring grease cup, the upper end and lower end of first hydraulic spring grease cup
Portion is rotatably connected at the vehicle frame and the revolver frame respectively；And/or second anti-vibration component includes the second hydraulic bullet
Spring, the upper and lower end of second hydraulic spring grease cup are rotatably connected at the vehicle frame and the right wheel frame respectively.
In one embodiment, the perambulator includes seat, and the seat is rotatably connected at described by the 7th shaft
The axial line of vehicle frame, the 7th shaft extends along the left and right directions of perambulator.
In conjunction with above-mentioned, the utility model uses above technical scheme, has the advantages that compared with prior art
When perambulator turns to, steering yoke rotates so that the one end of first connecting rod and second connecting rod is above the other end,
Left connecting rod and right connecting rod inclination, revolver frame and rear wheel frame to side inclination is turned to, drive the near front wheel and rear front-wheel relatively therewith
It is tilted towards side is turned to, while turning to driving lever and left steering bar, right turn bar is driven to be moved to the left or right, revolver frame and rear-wheel
Left-right rotation, realization turn to frame therewith, and turning radius of the perambulator when turning to is smaller；When turning to, only revolver frame and left front
Wheel, right wheel frame and off-front wheel left-right rotation are turned to, and steering force when steering is smaller, traveling and are turned to more steady.
Detailed description of the invention
It, below will be to attached drawing needed in embodiment description in order to illustrate more clearly of technical solution of the present invention
It is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, general for this field
For logical technical staff, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the stereoscopic schematic diagram according to a kind of perambulator of the utility model under a visual angle；
Fig. 2 is stereoscopic schematic diagram of the perambulator under another visual angle shown in Fig. 1；
Fig. 3 is stereoscopic schematic diagram of the perambulator under another visual angle shown in Fig. 1；
Fig. 4 is the partial enlarged view in Fig. 3 at A.
Wherein,
1, vehicle frame；10, interconnecting piece；11, seat；2, steering yoke；21, driving lever is turned to；211, end is connected；3, the near front wheel；
30, wheel shaft；31, revolver frame；311, connecting rod；32, limited cover；4, off-front wheel；40, wheel shaft；41, right wheel frame；411, connecting rod；
42, limited cover；5, rear-wheel；61, first connecting rod；62, second connecting rod；63, left connecting rod；64, right connecting rod；65, left steering bar；66,
Right turn bar；71, the first hydraulic spring grease cup；72, the second hydraulic spring grease cup.
Specific embodiment
The preferred embodiment of the utility model is described in detail with reference to the accompanying drawing, so that the advantages of the utility model
It can be easier to be understood by the person skilled in the art with feature.The nouns of locality such as the front, rear, left and right addressed in the utility model are
It is defined with perambulator in straight-going state, before being along driving direction.
Fig. 1-4 shows a kind of perambulator according to the present utility model, specially a kind of children's electric motor vehicle being driven by motor.
The perambulator includes vehicle frame 1, steering yoke 2, the near front wheel 3, off-front wheel 4 and the rear-wheel 5 for being connected to 1 rear portion of vehicle frame.Steering yoke 2 can be rotated
Ground is connected to 1 front of vehicle frame；Specifically, 1 front of vehicle frame has the interconnecting piece 10 for being located at 2 front side of steering yoke, 10 He of interconnecting piece
The other parts of vehicle frame 1 are fixed as one, and the lower part of steering yoke 2 has the shaft being rotationally threaded through in interconnecting piece 10,
The shaft extends substantially along the up and down direction of perambulator to be simultaneously fixed as one with the other parts of steering yoke 2, and steering yoke 2 can rotate
Axle portion left-right rotation.The perambulator further include first connecting rod 61, second connecting rod 62, left connecting rod 63 and revolver frame 31, right connecting rod 64 and
Right wheel frame 41, left steering bar 65, right turn bar 66.
Referring to shown in Fig. 2, first connecting rod 61 and second connecting rod 62 extend substantially along the left and right directions of perambulator and between the upper and lower every
Setting, left connecting rod 63 and right connecting rod 64 substantially vertically extend and left and right settings, and left connecting rod 63 and right connecting rod 64 distinguish position
In the left and right sides of steering yoke 2, double leval jib machine is constituted between first connecting rod 61, second connecting rod 62, left connecting rod 63 and right connecting rod 64
Structure.The middle part of first connecting rod 61 is rotatably connected at the interconnecting piece 10 of vehicle frame 1 by first rotating shaft a1；In second connecting rod 62
Portion is rotatably connected at the interconnecting piece 10 of vehicle frame 1 by the second shaft a2, and the second shaft a2 is located at the lower section of first rotating shaft a1；
The upper end of left connecting rod 63 is rotatably connected at the left part of first connecting rod 61 by third shaft a3, and left connecting rod 63 also passes through
4th shaft a4 is rotatably connected at the left part of second connecting rod 62, and the 4th shaft a4 is located at the lower section of third shaft a3；It is right
The upper end of connecting rod 64 is rotatably connected at the right part of first connecting rod 61 by the 5th shaft a5, and right connecting rod 64 is also by the
Six shaft a6 are rotatably connected at the right part of second connecting rod 62, and the 6th shaft a6 is located at the lower section of the 5th shaft a5.First
Shaft a1, the second shaft a2, third shaft a3, the 4th shaft a4, the 5th shaft a5 and the 6th shaft a6 axial line be preferably
It is parallel to each other and extends along the front-rear direction of perambulator.
The near front wheel 3 is set on revolver frame 31 and revolver frame 31 is rotatably connected at left connecting rod 63, and off-front wheel 4 is set to
On right wheel frame 41 and right wheel frame 41 is rotatably connected at right connecting rod 64.In the present embodiment, the near front wheel 33 has wheel shaft 30, left front
The wheel shaft 30 of wheel 33 can be rotationally connected with the lower end of revolver frame 31 around self-axis line；Off-front wheel 44 has wheel shaft 40, right
The wheel shaft 40 of front-wheel 44 can be rotationally connected with the lower end of right wheel frame 41 around self-axis line.The top of revolver frame 31 has axis
The other parts of the first rotating shaft that heart line vertically extends, first rotating shaft and revolver frame 31 are fixed as one, revolver frame 31
It is rotatably connected at left connecting rod 63 by first rotating shaft, specific as illustrated in fig. 1 and 2, first rotating shaft is rotatably penetrated and arranged in a left side
In connecting rod 63, revolver frame 31 is rotated around the axial line of first rotating shaft relative to left connecting rod 63, and the upper end of first rotating shaft is equipped with limit
Position lid 32, prevents revolver frame 31 to be detached from left connecting rod 63.The top of right wheel frame 41 has second that axial line vertically extends
The other parts of shaft, the second shaft and right wheel frame 41 are fixed as one, and right wheel frame 41 is rotatably coupled by the second shaft
In right connecting rod 64, specific as illustrated in fig. 1 and 2, the second shaft is rotatably penetrated and arranged in right connecting rod 64, and right wheel frame 41 is around second turn
The axial line of axis is rotated relative to right connecting rod 64, and the upper end of the second shaft is equipped with limited cover 42, and right wheel frame 41 is prevented to be detached from the right side
Connecting rod 64.First rotating shaft, the second shaft are located at left connecting rod 63 in figure and right connecting rod 64 is interior and invisible.
Left steering bar 65 and right turn bar 66 extend substantially along the left and right directions of perambulator.The left part of left steering bar 65 can turn
It is connected to revolver frame 31 dynamicly, the right part of right turn bar 66 is rotatably connected at right wheel frame 41.Be provided on steering yoke 2 with
The steering driving lever 12 for driving left steering bar 65, right turn bar 66 to move left and right that steering yoke 2 rotates turns to driving lever 12, a left side
The right part of turning-bar 65, the left part of right turn bar 66 connect or rotate coaxially in relative rotation two-by-two connection, " opposite two-by-two
Rotationally connect " the two of them component that refers in above three component rotate connection and third component again with the two portions
One in the part connection that rotates.Specifically as shown in figure 4, revolver frame 31 has the connecting rod 311 to extend back, the connecting rod
311 rear end bends downward and substantially vertically extends, and the rear end of the connecting rod 311 is rotationally plugged in left-hand rotation
Into the left part of bar 65；Right wheel frame 41 has the connecting rod 411 to extend back, and the rear end of the connecting rod 411 is bent downward
And substantially vertically extend, the rear end of the connecting rod 411 is rotationally plugged in the right part of right turn bar 66.Institute
It states and turns to the lower end that driving lever 12 is fixedly connected on steering yoke 2, turning to driving lever 12 has the rear side for being located at 2 lower end of steering yoke
The connection end 211 of (in other embodiments, may be alternatively located at the front side of 2 lower end of steering yoke) turns to the connection end of driving lever 12
211 are folded upward at and substantially vertically extend, and the connection end 211 for turning to driving lever 12 is rotationally plugged in left steering bar
In 65 right part and the left part of right turn bar 66, so that these three components be rotated connection.
The perambulator further includes the first shock-absorbing part being connected between the interconnecting piece 10 of vehicle frame 1 and revolver frame 31, is connected to vehicle
The second shock-absorbing part between the interconnecting piece 10 and right wheel frame 41 of frame 1.Wherein, the first shock-absorbing part and the second shock-absorbing part can be with above-mentioned
The deformation of four-bar mechanism and accordingly stretch, and have cushioning effect.In the present embodiment, the first shock-absorbing part, the second shock-absorbing part are equal
Hydraulic spring grease cup can be used, including cylinder body and be slidably connected to the piston cylinder of cylinder body, be equipped with hydraulic oil and spring in cylinder body, use
It is flexible in driving piston rod opposing cylinder.Hydraulic spring grease cup is a kind of known elastic buffering mechanism, and this will not be repeated here.First keeps away
Shake part is the first hydraulic spring grease cup 71, and the upper end of the first hydraulic spring grease cup 71 is rotatably connected at the connection of vehicle frame 1 by pivot
The lower end in portion 10, the first hydraulic spring grease cup 71 is rotatably connected at revolver frame 31 by pivot.Second shock-absorbing part is the second liquid
Pressing spring 72, the upper end of the second hydraulic spring grease cup 72 are rotatably connected at the interconnecting piece 10 of vehicle frame 1 by pivot, and second is hydraulic
The lower end of spring 72 is rotatably connected at right wheel frame 41 by pivot.
The wheel shaft of rear-wheel 5 can be rotationally connected with the rear end of vehicle frame 1 around self-axis line.The perambulator includes seat 11,
Seat 11 is rotatably connected at vehicle frame 1 by the 7th shaft a7, and the axial line of the 7th shaft a7 prolongs along the left and right directions of perambulator
It stretches.
In conjunction with Fig. 1-4, the use process of the perambulator is described as follows:
When perambulator is in straight trip, the near front wheel 33, off-front wheel 44 and rear-wheel 55 are stood on ground, first connecting rod 61 and second
62 horizontal extension of connecting rod, respective left and right ends portion mutually maintain an equal level；
When perambulator turns to the left, steering yoke 2 is rotated to the left and children's torso is left-leaning, so that first connecting rod 61 and second
The left part of connecting rod 62 is respectively higher than right part, and above-mentioned four-bar mechanism deformation is so that left connecting rod 63 and right connecting rod 64 incline to the left
Tiltedly, revolver frame 31 and right wheel frame 41 is driven to be tilted to the left, the near front wheel 33 and off-front wheel 44 are oppositely facing left bank therewith；With this
Meanwhile as steering yoke 2 turns left, the connection end 211 for turning to driving lever 12 moves right, and drives left steering bar 65 and turns right
It also moves right to bar 66, under the pulling of left steering bar 65 and under the promotion of right turn bar 66, the near front wheel 3 and off-front wheel 4
It turns left, so that the near front wheel 3 and 4 driving direction of off-front wheel change, realization turns to the left；
When perambulator turns to the right, steering yoke 2 rotates to the right and children's torso Right deviation, so that first connecting rod 61 and second
The right part of connecting rod 62 is respectively higher than right part, and above-mentioned four-bar mechanism deforms so that left connecting rod 63 and right connecting rod 64 are to Right deviation
Tiltedly, revolver frame 31 and right wheel frame 41 is driven to be tilted to the right, the near front wheel 33 and off-front wheel 44 are oppositely facing right bank therewith；With this
Meanwhile as steering yoke 2 turns right, the connection end 211 for turning to driving lever 12 is moved to the left, and is driven left steering bar 65 and is turned right
It is also moved to the left to bar 66, under the promotion of left steering bar 65 and under the pulling of right turn bar 66, the near front wheel 3 and off-front wheel 4
It turns right, so that the near front wheel 3 and 4 driving direction of off-front wheel change, realization is turned to the right.
Seen from the above description, due to turn to when the near front wheel 33 and off-front wheel 44 be oppositely facing turn to side tilt,
So that turning radius of the perambulator when turning to is smaller, and only need revolver frame 31 and the near front wheel 3, right wheel frame 41 and off-front wheel 4 left
Turn right it is dynamic is turned to, steering force when steering is smaller, traveling and turns to more steady.
The above embodiments are only for explaining the technical ideas and features of the present invention, is preferred embodiment, purpose
It is that person skilled in the art can understand the content of the utility model and implement accordingly, can not be limited with this practical
Novel protection scope.Equivalent transformation or modification made by all Spirit Essences according to the present utility model, should all cover in this reality
Within novel protection scope.
Claims (10)
1. a kind of perambulator, including vehicle frame, steering yoke, the near front wheel, off-front wheel and the rear-wheel for being connected to the vehicle frame rear portion, feature
It is, the steering yoke is rotatably connected at the vehicle frame front, the perambulator further include:
First connecting rod is rotatablely arranged on the vehicle frame；
Second connecting rod is rotatablely arranged on the vehicle frame；
Left connecting rod rotates with the left part of the left part of the first connecting rod and the second connecting rod connect respectively；
Right connecting rod rotates with the right part of the right part of the first connecting rod and the second connecting rod connect respectively；
Revolver frame is rotatably connected at the left connecting rod；
Left steering bar, left part are rotatably connected at the revolver frame；
Right wheel frame is rotatably connected at the right connecting rod；And
Right turn bar, right part are rotatably connected at the right wheel frame；
Wherein, described the near front wheel and the off-front wheel are respectively provided with wheel shaft, and the wheel shaft of described the near front wheel can turn around self-axis line
It is connected to the revolver frame dynamicly, the wheel shaft of the off-front wheel can be rotationally connected with the right wheel frame, institute around self-axis line
State the steering for driving the left steering bar, the right turn bar to move left and right for being provided on steering yoke and rotating with steering yoke
Driving lever, it is described turn to driving lever, the right part of the left steering bar, the right turn bar left part connect in relative rotation two-by-two
Or connection is rotated coaxially, when the perambulator is when turning to, described the near front wheel and the off-front wheel are with respect to ground inclination.
2. perambulator according to claim 1, which is characterized in that the steering driving lever is fixedly connected under the steering yoke
End, the driving lever that turns to have the rear side positioned at the steering yoke lower end or the connection end of front side, the connection end
It vertically extends, the connection end is rotationally inserted in the right part of the left steering bar, the right turn bar
In left part.
3. perambulator according to claim 1, which is characterized in that the top of the revolver frame has axial line along the vertical direction
The first rotating shaft of extension, the revolver frame are rotatably connected at the left connecting rod by the first rotating shaft；The right wheel frame
Top there is the second shaft for vertically extending of axial line, the right wheel frame is rotationally connected by second shaft
It is connected to the right connecting rod.
4. perambulator according to claim 3, which is characterized in that the upper part of the first rotating shaft, second shaft
It She You not limited cover.
5. perambulator according to claim 1, which is characterized in that the revolver frame has the connecting rod to extend back, described
The rear end of the connecting rod of revolver frame vertically extends and is rotationally plugged in the left part of the left steering bar；Institute
Stating right wheel frame has the connecting rod to extend back, and the rear end of the connecting rod of the right wheel frame vertically extends and can be rotated
Ground is plugged in the right part of right turn bar.
6. perambulator according to claim 1, which is characterized in that the first connecting rod and the second connecting rod are setting up and down,
The left connecting rod and the right connecting rod left and right settings and the left and right sides for being located at the steering yoke.
7. perambulator according to claim 5, which is characterized in that the first connecting rod is rotatably coupled by first rotating shaft
In the vehicle frame, the second connecting rod is rotatably connected at the vehicle frame by the second shaft, and the left connecting rod passes through third
Shaft is rotatably connected at the left part of the first connecting rod, and the left connecting rod is rotatably connected at institute by the 4th shaft
The left part of second connecting rod is stated, the right connecting rod is rotatably connected at the right part of the first connecting rod by the 5th shaft,
The right connecting rod is rotatably connected at the right part of the second connecting rod, the first rotating shaft, described by the 6th shaft
Two shafts, the third shaft, the 4th shaft, the 5th shaft and the 6th shaft axial line before perambulator
Rear direction extends.
8. perambulator according to claim 1, it is characterised in that: the perambulator further includes being connected to the vehicle frame and the left side
The first shock-absorbing part between wheel carrier and the second shock-absorbing part being connected between the vehicle frame and the right wheel frame.
9. perambulator according to claim 8, which is characterized in that the first shock-absorbing part includes the first hydraulic spring grease cup, described
The upper and lower end of first hydraulic spring grease cup is rotatably connected at the vehicle frame and the revolver frame respectively；And/or it is described
Second shock-absorbing part includes the second hydraulic spring grease cup, and the upper and lower end of second hydraulic spring grease cup is rotatably connected at respectively
The vehicle frame and the right wheel frame.
10. perambulator according to claim 1, which is characterized in that the perambulator includes seat, and the seat passes through the 7th turn
Axis is rotatably connected at the vehicle frame, and the axial line of the 7th shaft extends along the left and right directions of perambulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821538569.3U CN209208938U (en) | 2018-09-19 | 2018-09-19 | A kind of perambulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821538569.3U CN209208938U (en) | 2018-09-19 | 2018-09-19 | A kind of perambulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209208938U true CN209208938U (en) | 2019-08-06 |
Family
ID=67454394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821538569.3U Expired - Fee Related CN209208938U (en) | 2018-09-19 | 2018-09-19 | A kind of perambulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209208938U (en) |
-
2018
- 2018-09-19 CN CN201821538569.3U patent/CN209208938U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190806 Termination date: 20210919 |
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| CF01 | Termination of patent right due to non-payment of annual fee |