CN220500902U - Electric bicycle frame with adjustable shock-absorbing structure - Google Patents
Electric bicycle frame with adjustable shock-absorbing structure Download PDFInfo
- Publication number
- CN220500902U CN220500902U CN202321565874.2U CN202321565874U CN220500902U CN 220500902 U CN220500902 U CN 220500902U CN 202321565874 U CN202321565874 U CN 202321565874U CN 220500902 U CN220500902 U CN 220500902U
- Authority
- CN
- China
- Prior art keywords
- fork
- rear bottom
- bottom fork
- pipe
- 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.)
- Active
Links
- 238000013016 damping Methods 0.000 claims abstract description 41
- 230000035939 shock Effects 0.000 claims abstract description 39
- 238000010521 absorption reaction Methods 0.000 claims abstract description 19
- 230000003014 reinforcing effect Effects 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 8
- 230000017525 heat dissipation Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Landscapes
- Axle Suspensions And Sidecars For Cycles (AREA)
Abstract
The utility model discloses an electric bicycle frame with an adjustable shock absorption structure, which comprises a rear bottom fork and a frame, wherein the rear bottom fork is provided with a rear bottom fork left part and a rear bottom fork right part, and the rear bottom fork left part comprises a rear bottom fork left upper fork tube, a rear bottom fork left lower fork tube and a left lifting lug mounting groove; the right part of the rear bottom fork comprises a rear bottom fork right upper fork tube, a rear bottom fork right lower fork tube and a right lifting lug mounting groove; the rear bottom fork is provided with a middle shock absorption mounting piece, the frame is provided with an upper shock absorption mounting piece, and the upper shock absorption mounting piece is an adjustable mounting position. In this way, the middle damping mounting piece is arranged on the rear bottom fork, the upper damping mounting piece is arranged on the frame, and the plurality of second mounting holes are formed in the upper damping mounting piece, so that an installer can adjust the mounting position of the damping spring according to the requirement; meanwhile, the left part of the rear bottom fork and the right part of the rear bottom fork adopt a double-rod structure, so that the structural strength of the frame is improved.
Description
Technical Field
The utility model relates to the field of frames, in particular to an electric bicycle frame with an adjustable damping structure.
Background
An electric bicycle is an electromechanical integrated personal vehicle which uses a storage battery as an auxiliary energy source and is provided with a motor, a controller, a storage battery, a handle bar, and other operating components and a display instrument system on the basis of a common bicycle. In recent years, with the continuous improvement of the living standard of people, electric bicycles are increasingly popular with people due to convenience, comfort, safety, energy conservation and environmental protection.
In order to improve comfort, the existing electric bicycle is usually provided with a damping spring, but the installation positions of the existing damping spring are fixed, so that the damping effect of the damping spring is troublesome to adjust; meanwhile, the existing frames at the rear wheels of some electric bicycles are of single-tube structures, and the problems of deformation easily occur after long-term use; secondly, the pedal position of the existing electric bicycle is fixed, and the riding is not convenient for some people.
Therefore, a new technical solution is needed to solve the above problems.
Disclosure of Invention
In order to solve the defects and shortcomings of the prior art, the utility model provides an electric bicycle frame with an adjustable damping structure, which is characterized in that a middle damping mounting piece is arranged on a rear bottom fork, an upper damping mounting piece is arranged on the frame, and a plurality of second mounting holes are formed in the upper damping mounting piece, so that an installer can adjust the mounting position of a damping spring according to the needs; meanwhile, the left part of the rear bottom fork and the right part of the rear bottom fork adopt a double-rod structure, so that the structural strength of the frame is improved.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
an electric bicycle frame with an adjustable shock absorption structure comprises a rear bottom fork and a frame, wherein the rear bottom fork is provided with a rear bottom fork left part, a rear bottom fork right part and a reinforcing tube group for connecting the rear bottom fork left part and the rear bottom fork right part;
the left part of the rear bottom fork comprises a rear bottom fork left upper fork tube and a rear bottom fork left lower fork tube which are arranged up and down, the rear ends of the rear bottom fork left upper fork tube and the rear bottom fork left lower fork tube are connected, and the rear bottom fork left upper fork tube and the rear bottom fork left lower fork tube are provided with a left lifting lug mounting groove for mounting a rear wheel; the right part of the rear bottom fork comprises a rear bottom fork right upper fork tube and a rear bottom fork right lower fork tube which are arranged up and down, the rear ends of the rear bottom fork right upper fork tube and the rear bottom fork right lower fork tube are connected, and a right lifting lug mounting groove for mounting a rear wheel is formed; the front ends of the left upper fork tube of the rear bottom fork, the left lower fork tube of the rear bottom fork, the right upper fork tube of the rear bottom fork and the right lower fork tube of the rear bottom fork are connected by the central connecting part;
the rear bottom fork is provided with a middle damping mounting piece for mounting the damping spring, and the middle damping mounting piece is provided with a first mounting hole; the frame is provided with an upper shock absorption mounting piece corresponding to the middle shock absorption mounting piece, the upper shock absorption mounting piece is an adjustable mounting position, and a plurality of second mounting holes which are arranged at intervals are formed in the upper shock absorption mounting piece.
As a preferable mode, the frame is provided with a first seat tube and a second seat tube which are arranged left and right, and the first seat tube and the second seat tube extend obliquely towards the rear; the upper shock absorption installation parts are 2, one of the upper shock absorption installation parts is arranged on the first seat pipe, and the other of the upper shock absorption installation parts is arranged on the second seat pipe.
As a preferable scheme, the reinforced pipe group is I-shaped and is provided with an upper connecting pipe, a lower connecting pipe and a middle connecting pipe for connecting the middle parts of the upper connecting pipe and the lower connecting pipe; the two ends of the upper connecting pipe are correspondingly connected with the left upper fork pipe of the rear bottom fork and the right upper fork pipe of the rear bottom fork, and the two ends of the lower connecting pipe are correspondingly connected with the left upper fork pipe of the rear bottom fork and the right upper fork pipe of the rear bottom fork.
As a preferable scheme, a first reinforcing pipe is arranged at the left part of the rear bottom fork, and two ends of the first reinforcing pipe are correspondingly connected with the middle part of the upper left fork pipe of the rear bottom fork and the middle part of the lower left fork pipe of the rear bottom fork; the right part of the rear bottom fork is provided with a second reinforcing pipe, and two ends of the second reinforcing pipe are correspondingly connected with the middle part of the upper right fork pipe of the rear bottom fork and the middle part of the lower right fork pipe of the rear bottom fork.
As a preferable scheme, the lower extreme of frame is provided with five through-holes, just the frame is provided with the third mounting hole that is used for connecting auxiliary member five-way spare in the downside of five through-holes, be provided with the fourth mounting hole that is used for connecting auxiliary member five-way spare in the upside of five through-holes.
As a preferable scheme, a battery compartment is arranged on the frame, and a plurality of heat dissipation holes are formed in the battery compartment; and a motor bin for installing a motor is reserved at the lower side of the battery bin.
As a preferable scheme, the central connecting part is provided with a central shaft hole, the central shaft hole is provided with a transfer flywheel, and the transfer flywheel is provided with a first gear disc and a second gear disc which are concentrically arranged.
Compared with the prior art, the utility model has obvious advantages and beneficial effects, in particular, the technical proposal can be known that the utility model mainly comprises the steps that the rear bottom fork is provided with a middle damping mounting piece, the frame is provided with an upper damping mounting piece, and the upper damping mounting piece is provided with a plurality of second mounting holes, so that an installer can adjust the mounting position of the damping spring according to the requirement; meanwhile, the left part of the rear bottom fork and the right part of the rear bottom fork adopt a double-rod structure, so that the structural strength of the frame is improved;
furthermore, the height of the pedal can be adjusted by additionally arranging the five-way piece through the third mounting hole and the fourth mounting hole, so that the pedal is suitable for different riders.
In order to more clearly illustrate the structural features and efficacy of the present utility model, the present utility model will be described in detail below with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of the present utility model;
FIG. 2 is a perspective view of another embodiment of the present utility model;
FIG. 3 is an enlarged view of a portion of FIG. 2;
FIG. 4 is a schematic perspective view of a rear fork according to an embodiment of the present utility model;
fig. 5 is a side view of an embodiment of the present utility model.
The attached drawings are used for identifying and describing:
10. a rear bottom fork; 11. the left part of the rear bottom fork; 111. a rear bottom fork left upper fork tube; 112. a left lower fork tube of the rear bottom fork; 113. a left lifting lug mounting groove; 114. a first reinforcing tube; 12. the right part of the rear bottom fork; 121. a rear bottom fork right upper fork tube; 122. a rear bottom fork right lower fork tube; 123. a right shackle mounting slot; 124. a second reinforcing tube; 13. a reinforcing tube group; 131. an upper connecting pipe; 132. a lower connecting pipe; 133. a middle connecting pipe; 14. a middle shock absorbing mount; 15. a center connection portion; 151. a middle shaft hole; 16. a lower shock absorbing mount; 20. a frame; 201. a first seat tube; 202. a second seat tube; 203. five through holes; 204. a third mounting hole; 205. a fourth mounting hole; 206. a battery compartment; 2061. a heat radiation hole; 207. a motor bin; 21. an upper shock absorbing mount; 211. a second mounting hole; 22. the auxiliary part is a five-way part; 30. a transfer flywheel; 31. a first gear plate; 32. and a second gear plate.
Detailed Description
The technical solutions of the present embodiment will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiment is only a preferred embodiment of the present utility model.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 5, an electric bicycle frame with an adjustable shock absorbing structure in an embodiment of the present utility model includes a rear bottom fork 10, a frame 20, the rear bottom fork 10 having a rear bottom fork left portion 11, a rear bottom fork right portion 12, and a reinforcement tube set 13 connecting the rear bottom fork left portion 11 and the rear bottom fork right portion 12;
the rear bottom fork left part 11 comprises a rear bottom fork left upper fork tube 111 and a rear bottom fork left lower fork tube 112 which are arranged up and down, the rear ends of the rear bottom fork left upper fork tube 111 and the rear bottom fork left lower fork tube 112 are connected (usually connected through a left hook), and a left lifting lug mounting groove 113 for mounting a rear wheel is arranged (the lifting lug mounting groove 13 is usually arranged on the left hook); the rear bottom fork right part 12 comprises a rear bottom fork right upper fork tube 121 and a rear bottom fork right lower fork tube 122 which are arranged up and down, the rear ends of the rear bottom fork right upper fork tube 121 and the rear bottom fork right lower fork tube 122 are connected (usually connected through a right hook), and a right lifting lug mounting groove 123 for mounting a rear wheel is formed, wherein the lifting lug mounting groove 13 is usually arranged on the right hook; the front ends of the rear bottom fork left upper fork tube 111, the rear bottom fork left lower fork tube 112, the rear bottom fork right upper fork tube 121 and the rear bottom fork right lower fork tube 122 are connected by the center connecting part 15;
a middle damping mounting piece 14 for mounting a damping spring is arranged on the rear bottom fork 10, and a first mounting hole is formed in the middle damping mounting piece 14; the frame 20 is provided with an upper shock absorbing mounting piece 21 corresponding to the middle shock absorbing mounting piece 14, the upper shock absorbing mounting piece 21 is an adjustable mounting position, and a plurality of second mounting holes 211 are arranged at intervals on the upper shock absorbing mounting piece.
In this way, by arranging the middle damping mounting part 14 on the rear bottom fork 10, arranging the upper damping mounting part 21 on the frame 20, during mounting, one end of the damping spring is connected with the middle damping mounting part 14 through the connecting component, the other end of the damping spring is connected with the upper damping mounting part 21 through the connecting component, and an installer can connect the other end of the damping spring with different second mounting holes 211 of the upper damping mounting part 21 according to actual needs, so that the damping effect can be adjusted, and a rider can also adjust the damping capacity of the spring according to the scenes of ordinary riding or off road; in addition, the rear bottom fork left part 11 and the rear bottom fork right part 12 of the rear bottom fork 10 in the frame of the application adopt a double-rod structural design, so that the structural strength of the frame is also improved.
Preferably, a lower shock mount 16 is provided at the rear lower side of the middle shock mount 14 so that the lower end of the shock spring can be selectively coupled to the lower shock mount 16, providing more mounting options.
Preferably, the reinforced pipe set 13 is in an "I" shape, and has an upper connection pipe 131, a lower connection pipe 132, and a middle connection pipe 133 connecting the middle parts thereof; the two ends of the upper connecting pipe 131 are correspondingly connected with the rear bottom fork left upper fork pipe 111 and the rear bottom fork right upper fork pipe 121, and the two ends of the lower connecting pipe 132 are correspondingly connected with the rear bottom fork left upper fork pipe 111 and the rear bottom fork right upper fork pipe 121; thus, by the specific design of the reinforcing tube group 13, the structural strength of the rear bottom fork 10 is further improved, and the safety is improved; preferably, the middle shock absorbing mount 14 is provided at the upper connection pipe 131.
Preferably, the left part 11 of the rear bottom fork is provided with a first reinforced pipe 114, and two ends of the first reinforced pipe 114 are correspondingly connected with the middle part of the upper left fork pipe 111 of the rear bottom fork and the middle part of the lower left fork pipe 111 of the rear bottom fork; the rear bottom fork right part 12 is provided with a second reinforcing pipe 124, and two ends of the second reinforcing pipe 124 are correspondingly connected with the middle part of the rear bottom fork right upper fork pipe 121 and the middle part of the rear bottom fork right lower fork pipe 122, so that the structural strength of the rear bottom fork left part 11 and the rear bottom fork right part 12 is further improved.
Further, the frame 20 has a first seat tube 201 and a second seat tube 202 arranged in a left-right direction, and the first seat tube 201 and the second seat tube 202 each extend obliquely rearward; the upper shock absorbing mounting member 21 includes a first fixed mounting plate disposed on the first seat tube 201 and a second fixed mounting plate disposed on the second seat tube 202, where the first fixed mounting plate and the second fixed mounting plate are disposed in parallel, and the second mounting hole 211 is disposed in the first fixed mounting plate and the second fixed mounting plate.
Further, the method comprises the following steps: the lower end of the frame 20 is provided with a five-through hole 203 for mounting pedals, the lower side of the five-through hole 203 of the frame 20 is provided with a third mounting hole 204 for connecting an auxiliary member five-way piece 22 (an external five-way piece), and the upper side of the five-through hole 203 is provided with a fourth mounting hole 205 for connecting the auxiliary member five-way piece 22 (the external five-way piece);
so, when the height of former five through-holes 203 can not with the person of riding the adaptation, can install the pedal in the top or the below installation of former five through-holes 203 and connect external five through-pieces 22 annex for the suitability of the frame structure of this application is better, more can satisfy different person's of riding demand.
Preferably, a battery compartment 206 for installing a battery is provided on the frame 20, and a motor compartment 207 for installing a motor is reserved at the lower side of the battery compartment 206; the battery compartment 206 is provided with a plurality of heat dissipation holes 2061, which improves the heat dissipation effect of the battery and the safety.
The center connecting portion 15 is provided with a center shaft hole 151, the center shaft hole 151 is provided with a transfer flywheel 30, and the transfer flywheel 3 is provided with a first gear disc 31 and a second gear disc 32 which are concentrically arranged, so that a transmission chain can be matched with different gear discs, and the adaptation degree is improved.
The utility model mainly comprises a middle damping mounting piece arranged on a rear bottom fork, an upper damping mounting piece arranged on a frame, and a plurality of second mounting holes arranged on the upper damping mounting piece, so that an installer can adjust the mounting position of a damping spring according to the requirement; meanwhile, the left part of the rear bottom fork and the right part of the rear bottom fork adopt a double-rod structure, so that the structural strength of the frame is improved;
furthermore, the height of the pedal can be adjusted by additionally arranging the five-way piece through the third mounting hole and the fourth mounting hole, so that the pedal is suitable for different riders.
The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the technical scope of the present utility model, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present utility model are still within the scope of the technical solutions of the present utility model.
Claims (7)
1. An electric bicycle frame with adjustable shock-absorbing structure, its characterized in that: the rear bottom fork comprises a rear bottom fork and a frame, wherein the rear bottom fork is provided with a rear bottom fork left part, a rear bottom fork right part and a reinforcing tube group for connecting the rear bottom fork left part and the rear bottom fork right part;
the left part of the rear bottom fork comprises a rear bottom fork left upper fork tube and a rear bottom fork left lower fork tube which are arranged up and down, the rear ends of the rear bottom fork left upper fork tube and the rear bottom fork left lower fork tube are connected, and the rear bottom fork left upper fork tube and the rear bottom fork left lower fork tube are provided with a left lifting lug mounting groove for mounting a rear wheel; the right part of the rear bottom fork comprises a rear bottom fork right upper fork tube and a rear bottom fork right lower fork tube which are arranged up and down, the rear ends of the rear bottom fork right upper fork tube and the rear bottom fork right lower fork tube are connected, and a right lifting lug mounting groove for mounting a rear wheel is formed; the front ends of the left upper fork tube of the rear bottom fork, the left lower fork tube of the rear bottom fork, the right upper fork tube of the rear bottom fork and the right lower fork tube of the rear bottom fork are connected by the central connecting part;
the rear bottom fork is provided with a middle damping mounting piece for mounting the damping spring, and the middle damping mounting piece is provided with a first mounting hole; the frame is provided with an upper shock absorption mounting piece corresponding to the middle shock absorption mounting piece, the upper shock absorption mounting piece is an adjustable mounting position, and a plurality of second mounting holes which are arranged at intervals are formed in the upper shock absorption mounting piece.
2. An electric bicycle frame with an adjustable shock absorbing structure as defined in claim 1, wherein: the frame is provided with a first seat pipe and a second seat pipe which are arranged left and right, and the first seat pipe and the second seat pipe extend obliquely towards the rear; the upper shock absorption installation parts are 2, one of the upper shock absorption installation parts is arranged on the first seat pipe, and the other of the upper shock absorption installation parts is arranged on the second seat pipe.
3. An electric bicycle frame with an adjustable shock absorbing structure as defined in claim 1, wherein: the reinforced pipe group is I-shaped and is provided with an upper connecting pipe, a lower connecting pipe and a middle connecting pipe for connecting the middle parts of the upper connecting pipe and the lower connecting pipe; the two ends of the upper connecting pipe are correspondingly connected with the left upper fork pipe of the rear bottom fork and the right upper fork pipe of the rear bottom fork, and the two ends of the lower connecting pipe are correspondingly connected with the left upper fork pipe of the rear bottom fork and the right upper fork pipe of the rear bottom fork.
4. An electric bicycle frame with an adjustable shock absorbing structure as defined in claim 3, wherein: the left part of the rear bottom fork is provided with a first reinforcing pipe, and two ends of the first reinforcing pipe are correspondingly connected with the middle part of the left upper fork pipe of the rear bottom fork and the middle part of the left lower fork pipe of the rear bottom fork; the right part of the rear bottom fork is provided with a second reinforcing pipe, and two ends of the second reinforcing pipe are correspondingly connected with the middle part of the upper right fork pipe of the rear bottom fork and the middle part of the lower right fork pipe of the rear bottom fork.
5. An electric bicycle frame with an adjustable shock absorbing structure as defined in claim 2, wherein: the lower extreme of frame is provided with five through-holes, just the frame is provided with the third mounting hole that is used for connecting outer auxiliary member five-way piece in the downside of five through-holes, be provided with the fourth mounting hole that is used for connecting auxiliary member five-way piece in the upside of five through-holes.
6. An electric bicycle frame with an adjustable shock absorbing structure as defined in claim 2, wherein: the frame is provided with a battery compartment, and the battery compartment is provided with a plurality of heat dissipation holes; and a motor bin for installing a motor is reserved at the lower side of the battery bin.
7. An electric bicycle frame with an adjustable shock absorbing structure as defined in claim 4, wherein: the center connecting part is provided with a center shaft hole, the center shaft hole is provided with a transfer flywheel, and the transfer flywheel is provided with a first gear disc and a second gear disc which are concentrically arranged.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202321565874.2U CN220500902U (en) | 2023-06-19 | 2023-06-19 | Electric bicycle frame with adjustable shock-absorbing structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202321565874.2U CN220500902U (en) | 2023-06-19 | 2023-06-19 | Electric bicycle frame with adjustable shock-absorbing structure |
Publications (1)
Publication Number | Publication Date |
---|---|
CN220500902U true CN220500902U (en) | 2024-02-20 |
Family
ID=89880620
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202321565874.2U Active CN220500902U (en) | 2023-06-19 | 2023-06-19 | Electric bicycle frame with adjustable shock-absorbing structure |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN220500902U (en) |
-
2023
- 2023-06-19 CN CN202321565874.2U patent/CN220500902U/en active Active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN220500902U (en) | Electric bicycle frame with adjustable shock-absorbing structure | |
CN201457650U (en) | Shock absorber on moped | |
CN201633848U (en) | Vehicle frame of load-carrying type electric vehicle | |
CN201587486U (en) | Motorcycle frame | |
CN218198631U (en) | Shock-proof type long-endurance electric vehicle frame | |
CN208264464U (en) | A kind of double antitheft unilateral chain stay systems of rear-wheel | |
CN206984212U (en) | A kind of bicycle with shock-damping structure | |
CN2252760Y (en) | High performance bicycle with special structure | |
CN207670571U (en) | Juvenile's frame for cross-country motorcycle | |
CN2895217Y (en) | Integral folding electric bicycle | |
CN221114186U (en) | Bicycle with good saddle damping effect | |
CN210000467U (en) | electric vehicle frame | |
CN206141712U (en) | Electric bicycle's easy reassembling type rear wheel subassembly | |
CN209351530U (en) | A kind of built-in perambulator damping | |
CN221418505U (en) | Two-wheeled horizontal motorcycle frame and two-wheeled motorcycle | |
CN2129730Y (en) | Spring rack shock-proof structure for bicycle | |
CN215706883U (en) | Electric bicycle frame | |
CN212529917U (en) | Electric motor car shock attenuation frame | |
CN208306872U (en) | A kind of vehicle frame of electric bicycle | |
CN217893139U (en) | Low-span electric bicycle | |
CN101654136B (en) | Vehicle shock absorber | |
CN221757673U (en) | Electric power-assisted bicycle | |
CN220518490U (en) | Bicycle frame with high bearing capacity | |
CN208181292U (en) | A kind of intelligent balance tricycle | |
CN221251616U (en) | Two-wheeled vehicle |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |