CN113859163A - Vehicle and front lower protection device thereof - Google Patents
Vehicle and front lower protection device thereof Download PDFInfo
- Publication number
- CN113859163A CN113859163A CN202111083359.6A CN202111083359A CN113859163A CN 113859163 A CN113859163 A CN 113859163A CN 202111083359 A CN202111083359 A CN 202111083359A CN 113859163 A CN113859163 A CN 113859163A
- Authority
- CN
- China
- Prior art keywords
- support
- bracket
- guard
- front lower
- reinforcing
- 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.)
- Pending
Links
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 56
- 230000001681 protective effect Effects 0.000 claims abstract description 43
- 239000000463 material Substances 0.000 claims abstract description 25
- 239000007769 metal material Substances 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 3
- 230000001012 protector Effects 0.000 claims 2
- 230000002787 reinforcement Effects 0.000 claims 2
- 238000005187 foaming Methods 0.000 abstract description 17
- 230000003139 buffering effect Effects 0.000 description 10
- 238000005266 casting Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001962 electrophoresis Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/56—Fittings damping bouncing force in truck collisions, e.g. bumpers; Arrangements on high-riding vehicles, e.g. lorries, for preventing vehicles or objects from running thereunder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
- B60R2019/1806—Structural beams therefor, e.g. shock-absorbing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
- B60R2019/186—Additional energy absorbing means supported on bumber beams, e.g. cellular structures or material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention relates to the technical field of vehicle structures and discloses a vehicle and a front lower protection device thereof. The structure reinforcing support is arranged in the outer beam of the cross rod, the foaming material is filled between the structure reinforcing support and the outer beam, and the structural strength of the cross rod is reinforced by the structure reinforcing support and the foaming material, so that the collision performance of the front lower protective device is improved, the density of the structure reinforcing support and the foaming material is small, the weight of the cross rod is light, the size of the outer beam does not need to be increased, and the arrangement space of other systems is prevented from being influenced.
Description
Technical Field
The invention relates to the technical field of vehicle structures, in particular to a vehicle and a front lower protection device thereof.
Background
When the car and the higher truck in chassis take place the head-on collision, the car bores the truck bottom easily to cause serious injury to car driver and copilot personnel, in order to reduce the injury to small-size passenger car when head-on collision under the high-speed condition, effectively protect passenger car in-car passenger safety, commercial truck must install protection down before additional, and protection is usually the metal material under current, and it arranges on the frame of vehicle under.
Along with the improvement of the environmental protection requirement, the emission requirement of the vehicle is upgraded, the commercial vehicle is upgraded to the national emission standard, and the arrangement space of the cooling system of the vehicle is enlarged, so that the available space on the vehicle frame is reduced, and the front lower protection arrangement is not facilitated. Meanwhile, in order to meet the requirement of a front lower protection collision test, the front lower protection structure made of the existing metal material is complex and heavy, and the arrangement space of other systems is influenced.
The Chinese patent with the publication number of CN209776365U discloses a lightweight front lower protection assembly, which comprises two front lower protection brackets, a front lower protection plate, a backing plate, a front lower protection connecting bracket and a front lower protection welding assembly, wherein the two front lower protection brackets are respectively connected to left and right longitudinal beams of a frame, and the lower ends of the two front lower protection brackets are connected with the front lower protection cross beam welding assembly.
The protective bracket of the front lower protective assembly is usually made of thickened castings, the area of the thickened casting bracket is large, the weight is heavy, the overall rigidity is strong, and during front lower protective collision, the energy absorption effect is avoided, so that the size of the front end transverse rod assembly is increased to increase the strength of the transverse rod, the weight of parts is increased, and the arrangement space of other systems is influenced.
Disclosure of Invention
The purpose of the invention is: the front lower protection device is provided to solve the problems that in the prior art, the size of a front end cross rod assembly is required to be enhanced by a casting support, and the weight of parts is increased after the cross rods are increased to influence the arrangement space of other systems; the invention also provides a vehicle using the front lower protection device.
In order to achieve the purpose, the invention provides a front lower protection device which comprises a cross rod, a left protection support and a right protection support, wherein the cross rod comprises an outer beam and a connecting seat, the connecting seat is respectively arranged on the left side and the right side of the outer beam, the left protection support and the right protection support are both connected with the connecting seat, a structure reinforcing support is further arranged in the outer beam, a gap is formed between the structure reinforcing support and the outer beam, and a foaming material is filled in the gap.
Preferably, the structure reinforcing support is a tube structure, and an inward concave hole is arranged on the outer wall of the structure reinforcing support.
Preferably, a plurality of inner plates spaced apart from each other are disposed inside the structural reinforcing bracket, and the inner plates are distributed in parallel.
Preferably, the structure reinforcing bracket is an injection molding structure, and the material of the structure reinforcing bracket is a non-metallic material or a cast aluminum material.
Preferably, the outer beam is of a rectangular tube structure, and sealing plates are arranged at two ends of the outer beam respectively.
Preferably, the connecting seat comprises a reinforcing plate and a connecting plate, the reinforcing plate is fixedly arranged on the outer beam, a connecting hole is formed in the connecting plate, and the connecting plate is used for being connected with the left protective support and the right protective support.
Preferably, the connecting seat is further connected with a buffering support through a bolt, and the buffering support is used for being connected with the frame.
Preferably, the buffering support is the steel pipe tailor-welded structure, the buffering support with between the left side protective bracket the buffering support with all be provided with the contained angle between the right side protective bracket.
Preferably, the left protective bracket and the right protective bracket are both of stamping structures, and the left protective bracket and the right protective bracket are respectively connected with the connecting seat through bolts.
The invention also provides a vehicle which comprises a frame and a front lower protection device, wherein the front lower protection device is the front lower protection device in any technical scheme.
Compared with the prior art, the vehicle and the front lower protection device thereof have the advantages that: the structure reinforcing support is arranged in the outer beam of the cross rod, the foaming material is filled between the structure reinforcing support and the outer beam, and the structural strength of the cross rod is reinforced by the structure reinforcing support and the foaming material, so that the collision performance of the front lower protective device is improved, the density of the structure reinforcing support and the foaming material is small, the weight of the cross rod is light, the size of the outer beam does not need to be increased, and the arrangement space of other systems is prevented from being influenced.
Drawings
FIG. 1 is a schematic view of a connection structure of a front lower guard and a vehicle frame according to the present invention;
FIG. 2 is a schematic structural view of a cross bar of the front lower guard of FIG. 1;
FIG. 3 is a cross-sectional view of the cross-bar of FIG. 2;
FIG. 4 is a schematic structural view from another perspective of the attachment of the lower front guard of FIG. 1 to a vehicle frame;
fig. 5 is a structural view of a buffering bracket of the front lower guard of fig. 4.
In the figure, 1, a cross bar; 11. an outer beam; 12. a connecting seat; 121. a reinforcing plate; 122. a connecting plate; 2. a left protective bracket; 3. a right protective bracket; 4. a structural reinforcing scaffold; 41. concave holes; 42. an inner plate; 5. a foam material; 6. closing the plate; 7. a buffer bracket; 8. a frame; 81. a left bracket; 82. and a right bracket.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
As shown in fig. 1 to 5, the front lower guard device of the present invention includes a cross bar 1, a left guard support 2, and a right guard support 3, wherein the left guard support 2 and the right guard support 3 are disposed at left and right sides of the cross bar 1 at intervals, and the left guard support 2 and the right guard support 3 are respectively used for connecting a vehicle frame 8 and the cross bar 1, so that the front lower guard device is fixedly connected to the vehicle frame 8.
The structure reinforcing support 4 is further arranged in the outer beam 11, a gap is formed between the structure reinforcing support 4 and the outer beam 11, and the gap is filled with the foaming material 5. The foaming material 5 is coated on the surface of the structural reinforcing bracket 4, and the foaming material 5 can be cured and expanded when the structural reinforcing bracket 4 is baked in a painting workshop, so that the foaming material is filled between the reinforcing plate and the outer beam 11. Structural strength of the cross rod 1 can be strengthened by the structural reinforcing support 4 and the foaming material 5, so that the collision performance of the front lower protection device is improved, the density of the structural reinforcing support 4 and the foaming material 5 is low, the weight of the cross rod 1 is light, the size of the outer beam 11 does not need to be increased, and the arrangement space of other systems is prevented from being influenced.
Preferably, the structure-enhancing bracket 4 is a tube structure, and concave holes 41 which are recessed inwards are arranged on the outer wall of the structure-enhancing bracket 4. Shrinkage pool 41 has a plurality ofly and along the outer wall interval equipartition of structure reinforcing support 4, and shrinkage pool 41 is the semicircle orifice structure, and shrinkage pool 41 structure can increase the rigidity and the intensity of structure reinforcing support 4, increases the surface area of structure reinforcing support 4 simultaneously, and the contact surface of increase expanded material 5 and structure reinforcing support 4 support, better transmission effort to reinforcing horizontal pole 1's structural strength.
Preferably, a plurality of inner plates 42 spaced apart from each other are disposed inside the structural reinforcing bracket 4, and the inner plates 42 are distributed in parallel. Inner panel 42 horizontal layout, shrinkage pool 41 symmetrical arrangement on structure reinforcing support 4 is on structure reinforcing support 4, and the both ends of inner panel 42 are connected between shrinkage pool 41 of structure reinforcing support 4. In a collision in which the vehicle is generally in a horizontal collision, the inner panel 42 may increase the strength of the structural reinforcing bracket 4 in the horizontal direction, and the inner panel 42 may also structurally support the recessed hole 41 of the structural reinforcing bracket 4, further increasing the strength of the structural reinforcing bracket 4.
Preferably, the structure-reinforced bracket 4 is an injection-molded structure, and the material of the structure-reinforced bracket 4 is a non-metallic material or a cast aluminum material. The article density of injection moulding structure is little, weight is lighter relatively, and structure reinforcing support 4 adopts non-metallic material or cast aluminium material simultaneously, and cast aluminium is light metal, and non-metallic material's weight is also lighter, under the prerequisite of the structural strength of guaranteeing structure reinforcing support 4, has further reduced the weight of structure reinforcing support 4, and then has reduced the weight of horizontal pole 1.
Preferably, the outer beam 11 is a rectangular tube structure, and the two ends of the outer beam 11 are respectively provided with the sealing plates 6. Rectangular pipe structure arrangement structure reinforcing support 4 of being convenient for, the both ends slope of outer beam 11 is arranged to the rear side of vehicle, with the appearance looks adaptation of vehicle, installs 6 welded fastening of back shrouding on outer beam 11 in outer beam 11 at structure reinforcing support 4, can be sealed with horizontal pole 1.
And the closing plate 6 on the cross rod 1 is subjected to electrophoresis and powder spraying operation after welding is finished, so that rust removal is realized. When powder is sprayed, the surface temperature of the part rises, the foaming material 5 on the surface of the structure reinforcing support 4 is solidified and expanded, and the expanded foam is in close contact with the outer beam 11 to reinforce the structure of the cross rod 1. The foaming material 5 may be a material that expands and deforms when heated, such as a foaming resin.
Preferably, the connecting seat 12 includes a reinforcing plate 121 and a connecting plate 122, the reinforcing plate 121 is fixedly disposed on the outer beam 11, the connecting plate 122 is opened with a connecting hole, and the connecting plate 122 is used for connecting with the left protective bracket 2 and the right protective bracket 3. Reinforcing plate 121 welded fastening is in the outside of outer beam 11, connecting plate 122 and reinforcing plate 121 welded fastening, connecting plate 122 is perpendicular with reinforcing plate 121, connecting hole on connecting plate 122 can with left protective bracket 2, right protective bracket 3 passes through the bolt assembly, reinforcing plate 121 can increase outer beam 11 and left protective bracket 2, the structural strength of right protective bracket 3 hookup location department, connecting plate 122 can avoid directly trompil and influence the intensity of horizontal pole 1 on horizontal pole 1.
Preferably, the connecting seat 12 is further connected with a buffer bracket 7 through bolts, and the buffer bracket 7 is connected with the frame 8. The number of the buffer supports 7 is two, and the two buffer supports 7 are respectively connected with the connecting holes in the connecting plate 122 through bolts, so that the connecting structure is simplified.
Preferably, buffering support 7 is steel pipe tailor-welded structure, all is provided with the contained angle between buffering support 7 and the left protective housing 2, between buffering support 7 and the right protective housing 3. The space that the steel pipe tailor-welded structure occupy is little, can effectively avoid other systems to arrange the space when guaranteeing the intensity of buffering support 7. Aiming at different plate springs and tire models, the ground clearance of the front lower protection device is required to be less than 400mm, the buffer support 7 is a standard type steel pipe, and the requirement for adjusting the ground clearance of the front lower protection device can be met by adjusting the length and the arrangement angle of the steel pipe according to the requirement for arranging the whole vehicle.
And after forming the contained angle between buffer support 7 and left protective cradle 2, right protective cradle 3, form triangle-shaped stable structure with frame 8, when the vehicle collision, buffer support 7 can strengthen the joint strength between horizontal pole 1 and the frame 8 with left protective cradle 2, the cooperation of right protective cradle 3.
Preferably, left protective bracket 2 and right protective bracket 3 are stamping structure, and left protective bracket 2 and right protective bracket 3 are connected with connecting seat 12 through the bolt respectively. The stamped structure has a low mass, and the weight of the front lower guard can be reduced while maintaining the same strength.
A left support 81 and a right support 82 are arranged on the frame 8, the left protective support 2 is fixedly connected with the left support 81 through bolts, and the right protective support 3 is fixedly connected with the right support 82 through bolts.
The present application further provides a vehicle including a frame and a front lower guard, the structure of which is the same as that of any one of the above embodiments, and the description will not be repeated here.
To sum up, the embodiment of the invention provides a vehicle and a front lower protection device thereof, wherein a structure reinforcing support is arranged in an outer beam of a cross rod, and the structural strength of the cross rod is reinforced by the structure reinforcing support and a foaming material, so that the collision performance of the front lower protection device is improved.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a preceding protector down, its characterized in that, includes horizontal pole, left protective bracket and right protective bracket, the horizontal pole includes outer roof beam and connecting seat, the left and right sides of outer roof beam has arranged respectively the connecting seat, left side protective bracket with right side protective bracket all with the connecting seat is connected, still arranged the structure reinforcing support in the outer roof beam, the structure reinforcing support with have the clearance between the outer roof beam, the clearance intussuseption is filled with expanded material.
2. The front lower guard according to claim 1, wherein the structural reinforcement bracket is a tube structure having an inwardly recessed recess disposed in an outer wall thereof.
3. The under-front guard according to claim 2, wherein the structural reinforcement bracket has disposed therein a plurality of spaced apart inner plates, each of the inner plates being disposed in parallel.
4. The under-front guard according to any one of claims 1-3, wherein the structural-reinforcing bracket is an injection-molded structure, and the structural-reinforcing bracket is made of a non-metallic material or a cast aluminum material.
5. The under-front guard according to any one of claims 1-3, wherein the outer beam is of a rectangular tube structure, and sealing plates are arranged at both ends of the outer beam.
6. The front lower guard according to any one of claims 1 to 3, wherein the connecting base includes a reinforcing plate and a connecting plate, the reinforcing plate is fixedly disposed on the outer beam, the connecting plate is provided with a connecting hole, and the connecting plate is used for connecting with the left guard support and the right guard support.
7. The under-front protector according to any one of claims 1-3, characterized in that a buffer bracket is further bolted to the connecting base, the buffer bracket being adapted to be connected to a vehicle frame.
8. The front lower protection device according to claim 7, wherein the buffer support is a steel pipe tailor-welded structure, and included angles are arranged between the buffer support and the left protection support and between the buffer support and the right protection support.
9. The front lower guard device according to any one of claims 1 to 3, wherein the left guard support and the right guard support are both of a stamped structure, and the left guard support and the right guard support are respectively connected with the connecting seat through bolts.
10. A vehicle comprising a frame and a front under guard as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111083359.6A CN113859163A (en) | 2021-09-15 | 2021-09-15 | Vehicle and front lower protection device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111083359.6A CN113859163A (en) | 2021-09-15 | 2021-09-15 | Vehicle and front lower protection device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113859163A true CN113859163A (en) | 2021-12-31 |
Family
ID=78996116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111083359.6A Pending CN113859163A (en) | 2021-09-15 | 2021-09-15 | Vehicle and front lower protection device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113859163A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114655309A (en) * | 2022-03-29 | 2022-06-24 | 东风柳州汽车有限公司 | First cross beam of automobile frame |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08164805A (en) * | 1994-08-16 | 1996-06-25 | Jsp Corp | Impact absorbing bumper |
| US6096403A (en) * | 1997-07-21 | 2000-08-01 | Henkel Corporation | Reinforced structural members |
| US20050057053A1 (en) * | 2003-07-03 | 2005-03-17 | Darin Evans | Bumper system incorporating thermoformed energy absorber |
| JP2010100249A (en) * | 2008-10-27 | 2010-05-06 | Aisin Seiki Co Ltd | Bumper reinforcement for vehicle |
| US20130043692A1 (en) * | 2010-04-26 | 2013-02-21 | Toyota Jidosha Kabushiki Kaisha | Bumper structure |
| CN105015468A (en) * | 2015-07-30 | 2015-11-04 | 东风柳州汽车有限公司 | Front protective device of automobile |
-
2021
- 2021-09-15 CN CN202111083359.6A patent/CN113859163A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08164805A (en) * | 1994-08-16 | 1996-06-25 | Jsp Corp | Impact absorbing bumper |
| US6096403A (en) * | 1997-07-21 | 2000-08-01 | Henkel Corporation | Reinforced structural members |
| US20050057053A1 (en) * | 2003-07-03 | 2005-03-17 | Darin Evans | Bumper system incorporating thermoformed energy absorber |
| JP2010100249A (en) * | 2008-10-27 | 2010-05-06 | Aisin Seiki Co Ltd | Bumper reinforcement for vehicle |
| US20130043692A1 (en) * | 2010-04-26 | 2013-02-21 | Toyota Jidosha Kabushiki Kaisha | Bumper structure |
| CN105015468A (en) * | 2015-07-30 | 2015-11-04 | 东风柳州汽车有限公司 | Front protective device of automobile |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114655309A (en) * | 2022-03-29 | 2022-06-24 | 东风柳州汽车有限公司 | First cross beam of automobile frame |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211231 |
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| RJ01 | Rejection of invention patent application after publication |