CN106697057A - Front longitudinal beam reinforcing plate, front longitudinal beam assembly and automobile - Google Patents
Front longitudinal beam reinforcing plate, front longitudinal beam assembly and automobile Download PDFInfo
- Publication number
- CN106697057A CN106697057A CN201510438391.XA CN201510438391A CN106697057A CN 106697057 A CN106697057 A CN 106697057A CN 201510438391 A CN201510438391 A CN 201510438391A CN 106697057 A CN106697057 A CN 106697057A
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- reinforcing plate
- front longitudinal
- energy
- absorbing section
- subframe
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 97
- 238000005452 bending Methods 0.000 claims description 15
- 241000826860 Trapezium Species 0.000 claims description 4
- 238000005728 strengthening Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The invention provides a front longitudinal beam reinforcing plate, a front longitudinal beam assembly and an automobile. The front longitudinal beam reinforcing plate comprises a first energy absorbing section and a reinforcing section, wherein the first energy absorbing section is of a groove structure. By the adoption of the provided technical scheme, the problem that the collapsing deformation amount of a front longitudinal beam reinforcing plate in the prior art is insufficient after a collision can be solved.
Description
Technical field
The present invention relates to automobile technical field, in particular to a kind of front longitudinal reinforcing plate, front longitudinal assembly and automobile.
Background technology
At present, automobile front longitudinal beam assembly is important power transmission and the second energy-absorbing segment in vehicle collisions.As shown in figure 1, vapour
Before the front longitudinal assembly of car includes longeron front shroud 1, longeron body 2, longeron upper cover plate 3, front longitudinal reinforcing plate 4, subframe
Reinforcing plate 6 after reinforcing plate 5 and subframe, front longitudinal reinforcing plate 4 is arranged on the leading portion of longeron body 2.When collision occurs, indulge
There is crumple deformation in the impulsive force that beam body 2 can be collided, and impulsive force can backward be transmitted along self structure.
Crumple deflection is insufficient after an impact for front longitudinal reinforcing plate 4 of the prior art, causes collision energy not added by front longitudinal
The absorption well of strong plate 4, can so cause the back segment of longeron body 2 to cause larger bending to deform.
The content of the invention
It is a primary object of the present invention to provide a kind of front longitudinal reinforcing plate, front longitudinal assembly and automobile, to solve prior art
The middle front longitudinal reinforcing plate insufficient problem of crumple deflection after an impact.
To achieve these goals, according to an aspect of the invention, there is provided a kind of front longitudinal reinforcing plate, front longitudinal reinforcing plate
Including the first energy-absorbing section and strengthening segment, the first energy-absorbing section has groove structure.
Further, length direction of the length direction of groove structure perpendicular to the first energy-absorbing section.
Further, the first energy-absorbing section includes multiple groove structures, multiple groove structure interval settings.
Further, width of the width of the bottom land of groove structure less than the opening of groove structure.
Further, the cross section of groove structure is V-structure or trapezium structure.
Further, the first energy-absorbing section is the first concave inward structure, and the first energy-absorbing section has inner surface and outer surface, and groove structure sets
Put on the outer surface of the first energy-absorbing section.
Further, first side and second side of the first energy-absorbing section including body and the both sides for being arranged on body, first side,
Body and second side form the first concave inward structure, and the first groove is provided with first side, second are provided with second side recessed
Groove, is provided with the 3rd groove on body, the first groove, the second groove and the 3rd groove are interconnected.
To achieve these goals, according to an aspect of the invention, there is provided a kind of front longitudinal assembly, including longeron body and
Front longitudinal reinforcing plate, front longitudinal reinforcing plate is arranged in longeron body, and front longitudinal reinforcing plate is the front longitudinal reinforcing plate of above-mentioned offer,
First energy-absorbing section corresponds to the leading portion of longeron body.
Further, front longitudinal assembly is also including reinforcing plate after reinforcing plate before subframe and subframe；Longeron body is the second indent
Structure, longeron body includes the second energy-absorbing section and bending part, and reinforcing plate is arranged at second after reinforcing plate and subframe before subframe
The outside of concave inward structure, reinforcing plate is arranged on bending part and reinforcing plate is set after subframe after reinforcing plate and subframe before subframe
Side of the reinforcing plate away from the second energy-absorbing section before subframe；Front longitudinal reinforcing plate extends to folding from the second energy-absorbing section of longeron body
Corresponding to the position of reinforcing plate after subframe on turn of bilge.
According to another aspect of the present invention, there is provided a kind of automobile, including front longitudinal assembly, front longitudinal assembly is above-mentioned offer
Front longitudinal assembly.
Apply the technical scheme of the present invention, front longitudinal reinforcing plate can improve the holding strength of longeron body during normal use,
Groove structure is set by the first energy-absorbing of front longitudinal reinforcing plate section so that the mistake that front longitudinal reinforcing plate collides in vehicle body
Cheng Zhong, the groove structure can occur fully conquassation deformation, improve shock-absorbing capacity of the front longitudinal reinforcing plate in collision process,
So as to reduce the deflection of longeron body back segment.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate, for explaining the present invention, not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 shows the structural representation of the front longitudinal assembly of prior art；
Fig. 2 shows the structural representation of the front longitudinal reinforcing plate provided according to the present invention；
Fig. 3 shows the scheme of installation of the front longitudinal assembly provided according to the present invention；
Fig. 4 shows the structural representation of the front longitudinal assembly provided according to the present invention；
Fig. 5 shows the scheme of installation of front longitudinal reinforcing plate in Fig. 2.
Wherein, above-mentioned accompanying drawing is marked including the following drawings：
1st, longeron front shroud；2nd, longeron body；3rd, longeron upper cover plate；4th, front longitudinal reinforcing plate；5th, reinforcing plate before subframe；
6th, reinforcing plate after subframe；10th, longeron body；11st, the second energy-absorbing section；12nd, bending part；20th, front longitudinal reinforcing plate；21、
First energy-absorbing section；21a, groove structure；22nd, strengthening segment；23rd, through hole；30th, reinforcing plate before subframe；40th, after subframe
Reinforcing plate.
Specific embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can be mutually combined.
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in Figures 2 to 5, the invention provides a kind of embodiment of front longitudinal reinforcing plate, the front longitudinal reinforcing plate 20 is set
Inside longeron body 10.Wherein, front longitudinal reinforcing plate 20 includes the first energy-absorbing section 21 and strengthening segment 22, the first energy-absorbing section
21 and strengthening segment 22 be structure as a whole, the front end that the first energy-absorbing section 21 is arranged on longeron body 10, strengthening segment 22 is along longeron sheet
The bearing of trend of body 10 is set.Specifically, groove structure 21a is provided with first energy-absorbing section 21, as the presently preferred embodiments,
Groove structure 21a is limited by length dimension, depth dimensions and width dimensions, wherein, the length direction of groove structure 21a perpendicular to
The length direction of the first energy-absorbing section 21.
Using the embodiment that the present invention is provided, front longitudinal reinforcing plate 20 can improve longeron body 10 during normal use
Holding strength, sets groove structure 21a so that front longitudinal reinforcing plate by the first energy-absorbing of front longitudinal reinforcing plate 20 section 21
20 during vehicle body collides, and groove structure 21a can occur fully conquassation deformation, improve front longitudinal reinforcing plate
20 shock-absorbing capacity in collision process, so as to reduce the deflection of the back segment of longeron body 10.
In the embodiment that the present invention is provided, first energy-absorbing section 21 and strengthening segment 22 are the first concave inward structure, wherein, should
First concave inward structure includes body, first side and second side, and groove structure 21a may be provided at the outside of the first concave inward structure,
The inner side of the first concave inward structure is may also be arranged on, as the presently preferred embodiments, groove structure 21a is arranged on the first energy-absorbing section 21
Outer surface.
Wherein, in order to reach more preferable deformation effect, the width of the width less than the opening of groove structure 21 of groove structure 21a bottom lands
Degree.Alternatively, the width of groove structure 21a becomes larger from bottom land to aperture position.Specifically, the first concave inward structure can set
V-structure is set to, and bottom land is provided with arc-shaped transition section, also the first concave inward structure can be set to trapezium structure.In this reality
Apply in example, first concave inward structure is V-structure.
The first groove is provided with order to reach good energy-absorbing effect, on first side, the second groove is provided with second side,
The 3rd groove is provided with body, the first groove, the second groove and the 3rd groove are interconnected to constitute groove structure 21a.
Also, the free end of the first groove extends to the upper edge of first side, the free end of the second groove extends to the upper of second side
Edge, can be such that the first energy-absorbing section 21 fully deforms during colliding by groove structure 21a.
Specifically, multiple groove structure 21a are provided with the first energy-absorbing section 21, and multiple groove structure 21a are arranged in parallel,
The spacing of two neighboring groove structure 21a, specifically, the one end in the first energy-absorbing section 21 away from strengthening segment 22 is first end,
Groove structure 21a is closer to the first end of the first energy-absorbing section 21, and the spacing of two neighboring groove structure 21a is smaller.
In the embodiment that the present invention is mentioned, the thickness of the first energy-absorbing section 21 is set smaller than the thickness of strengthening segment 22.So
The intensity of strengthening segment 22 can be increased while the energy-absorbing effect of the first energy-absorbing section 21 is met so that front longitudinal reinforcing plate 20
The abundant conquassation deformation when colliding of first energy-absorbing section 21, and avoid the back segment excessive deformation of longeron body 10.Specifically,
The thickness of the first energy-absorbing section 21 is set to 2.2mm, the thickness of strengthening segment 22 is set to 2.8mm.
As shown in Fig. 2 the front longitudinal reinforcing plate 20 also includes through hole 23, through hole 23 is arranged on the first energy-absorbing section 21 and strengthening segment
On 22.Circulation of the fluid in front longitudinal reinforcing plate 20 ensure that by through hole 23.Alternatively, two neighboring groove structure
A through hole 23 is provided between 21a.
As shown in Figures 2 to 5, present invention also offers a kind of front longitudinal assembly, the front longitudinal assembly includes the He of longeron body 10
Front longitudinal reinforcing plate 20, front longitudinal reinforcing plate 20 is arranged in longeron body 10, and front longitudinal reinforcing plate 20 is in above-described embodiment
Front longitudinal reinforcing plate 20, the first energy-absorbing section 21 correspond to longeron body 10 leading portion.
Using front longitudinal assembly provided in an embodiment of the present invention, set by the first energy-absorbing of front longitudinal reinforcing plate 20 section 21
Groove structure 21a so that when colliding, the first energy-absorbing section 21 fully can deform vehicle in conquassation, and then make longeron body
Leading portion abundant conquassation deformation, and absorb the energy produced by collision, reduce the deformation of the strengthening segment 22 of front longitudinal reinforcing plate 20,
And then reduce the deflection of longeron body back segment.
In the embodiment that the present invention is provided, the front longitudinal assembly also includes before subframe reinforcing plate 40 after reinforcing plate 30 and subframe,
Longeron body 10 is the second concave inward structure, and longeron body 10 includes the second energy-absorbing section 11 and bending part 12, front longitudinal reinforcing plate 20
The first energy-absorbing section 21 be arranged on the second energy-absorbing section 11, the strengthening segment 22 of front longitudinal reinforcing plate 20 is correspondingly arranged at bending part 12.
Wherein, longeron body 10 and front longitudinal reinforcing plate 20 are structure as a whole.Reinforcing plate after reinforcing plate 30 and subframe before subframe
40 outsides for being arranged at the second concave inward structure, reinforcing plate 40 is arranged on bending part 12 after reinforcing plate 30 and subframe before subframe
Reinforcing plate 40 is arranged on side of the reinforcing plate 30 away from the second energy-absorbing section 11 before subframe after upper and subframe.Before subframe
Reinforcing plate 40 can strengthen the intensity of bending part 12 after reinforcing plate 30 and subframe.Wherein, the second concave inward structure could be arranged to
U-shape structure, may be alternatively provided as trapezium structure.In the present embodiment, second concave inward structure is U-shape structure.
Specifically, in order to increase the rigidity at the bending part 12 of longeron body 10, by the front longitudinal reinforcing plate 20 from longeron body 10
The second energy-absorbing section 11 extend on bending part 12 correspond to subframe after reinforcing plate 40 position.
In order to when vehicle collides, the second energy-absorbing section 11 of longeron body 10 fully can deform in conquassation, and reduce vertical
Deformation at the bending part 12 of beam body 10, the thickness of the second energy-absorbing section 11 is set smaller than the thickness of bending part 12.Wherein,
As the presently preferred embodiments, the thickness at the second energy-absorbing section 11 is set to 2.2mm, the thickness at bending part 12 is set to 2.8mm.
As shown in Figures 2 to 5, present invention also offers a kind of automobile, including front longitudinal assembly, front longitudinal assembly is above-mentioned reality
The front longitudinal assembly provided in example is provided.
Using automobile provided in an embodiment of the present invention, groove knot is set by the first energy-absorbing of front longitudinal reinforcing plate 20 section 21
Structure 21a so that when colliding, the first energy-absorbing section 21 fully can deform vehicle in conquassation, and then make the second of longeron body
Energy-absorbing 11 abundant conquassation of section deform and absorb the energy produced by collision, so as to reduce the change of the strengthening segment 22 of front longitudinal reinforcing plate 20
Shape, and then reduce the deflection of longeron body back segment, it is ensured that the security of driver's cabin.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for those skilled in the art
For, the present invention can have various modifications and variations.All any modifications within the spirit and principles in the present invention, made, etc.
With replacement, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of front longitudinal reinforcing plate, it is characterised in that the front longitudinal reinforcing plate (20) including the first energy-absorbing section (21) and plus
Strong section (22), first energy-absorbing section (21) is with groove structure (21a).
2. front longitudinal reinforcing plate according to claim 1, it is characterised in that the length direction of the groove structure (21a) hangs down
The straight length direction in first energy-absorbing section (21).
3. front longitudinal reinforcing plate according to claim 2, it is characterised in that first energy-absorbing section (21) includes multiple institutes
State groove structure (21a), multiple groove structure (21a) interval settings.
4. front longitudinal reinforcing plate according to claim 3, it is characterised in that the width of the bottom land of the groove structure (21a)
Less than the width of the opening of the groove structure (21a).
5. front longitudinal reinforcing plate according to claim 4, it is characterised in that the cross section of the groove structure (21a) is V
Type structure or trapezium structure.
6. front longitudinal reinforcing plate according to any one of claim 1 to 5, it is characterised in that first energy-absorbing section (21)
It is the first concave inward structure, with inner surface and outer surface, the groove structure (21a) sets first energy-absorbing section (21)
Put on the outer surface of first energy-absorbing section (21).
7. front longitudinal reinforcing plate according to claim 6, it is characterised in that first energy-absorbing section (21) including body and
It is arranged on the first side and second side of the both sides of the body, the first side, the body and second side
While forming first concave inward structure, the first groove is provided with the first side, is provided with the second side
Two grooves, are provided with the 3rd groove, first groove, second groove and the 3rd groove on the body
It is interconnected.
8. a kind of front longitudinal assembly, including longeron body (10) and front longitudinal reinforcing plate (20), the front longitudinal reinforcing plate (20)
It is arranged in the longeron body (10), it is characterised in that the front longitudinal reinforcing plate (20) is claim 1 to 7
Any one of front longitudinal reinforcing plate (20), first energy-absorbing section (21) is corresponding to the longeron body (10)
Leading portion.
9. front longitudinal assembly according to claim 8, it is characterised in that
The front longitudinal assembly is also including reinforcing plate (40) after reinforcing plate (30) before subframe and subframe；
The longeron body (10) is the second concave inward structure, and the longeron body (10) includes the second energy-absorbing section (11)
With bending part (12), before the subframe after reinforcing plate (30) and the subframe reinforcing plate (40) be arranged at it is described
The outside of the second concave inward structure, reinforcing plate (40) is arranged on after reinforcing plate (30) and the subframe before the subframe
Reinforcing plate (30) is remote before reinforcing plate (40) is arranged on the subframe on the bending part (12) and after the subframe
From the side of second energy-absorbing section (11)；
The front longitudinal reinforcing plate (20) extends to the folding from second energy-absorbing section (11) of the longeron body (10)
Corresponding to the position of reinforcing plate (40) after the subframe on turn of bilge (12).
10. a kind of automobile, including front longitudinal assembly, it is characterised in that the front longitudinal assembly be claim 8 or 9 described in before
Longeron assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510438391.XA CN106697057B (en) | 2015-07-23 | 2015-07-23 | Front longitudinal beam stiffening plate, front longitudinal beam assembly and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510438391.XA CN106697057B (en) | 2015-07-23 | 2015-07-23 | Front longitudinal beam stiffening plate, front longitudinal beam assembly and automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106697057A true CN106697057A (en) | 2017-05-24 |
| CN106697057B CN106697057B (en) | 2019-04-19 |
Family
ID=58894745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510438391.XA Active CN106697057B (en) | 2015-07-23 | 2015-07-23 | Front longitudinal beam stiffening plate, front longitudinal beam assembly and automobile |
Country Status (1)
| Country | Link |
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| CN (1) | CN106697057B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108583689A (en) * | 2018-05-08 | 2018-09-28 | 江苏敏安电动汽车有限公司 | Longeron with force transferring structure and automobile |
| CN108891484A (en) * | 2018-04-25 | 2018-11-27 | 力帆实业(集团)股份有限公司 | Automobile front longitudinal beam assembly |
| CN109987140A (en) * | 2017-12-29 | 2019-07-09 | 长城汽车股份有限公司 | Automobile frame |
| CN110395315A (en) * | 2019-07-26 | 2019-11-01 | 鄂尔多斯市元盟工贸有限公司 | A kind of automobile front longitudinal beam inside reinforcement girder construction |
| CN110510005A (en) * | 2019-07-18 | 2019-11-29 | 东风商用车有限公司 | A kind of commercial-vehicle cab longitudinal floor beam |
| CN113232726A (en) * | 2021-04-29 | 2021-08-10 | 宝能(广州)汽车研究院有限公司 | Longitudinal beam reinforcing plate and preparation method thereof |
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| JP2011207263A (en) * | 2010-03-29 | 2011-10-20 | Jfe Steel Corp | Reinforcing structure of collision energy absorbing member of automobile |
| CN202295020U (en) * | 2011-10-16 | 2012-07-04 | 浙江吉利汽车研究院有限公司 | Front floor longitudinal beam reinforcing piece of automobile |
| JP2012236525A (en) * | 2011-05-12 | 2012-12-06 | Mazda Motor Corp | Vehicular frame structure |
| CN103552604A (en) * | 2013-10-08 | 2014-02-05 | 安徽江淮汽车股份有限公司 | Automobile longitudinal beam structure |
| CN104908816A (en) * | 2015-05-28 | 2015-09-16 | 华晨汽车集团控股有限公司 | Stiffening beam structure |
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2015
- 2015-07-23 CN CN201510438391.XA patent/CN106697057B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2011207263A (en) * | 2010-03-29 | 2011-10-20 | Jfe Steel Corp | Reinforcing structure of collision energy absorbing member of automobile |
| JP2012236525A (en) * | 2011-05-12 | 2012-12-06 | Mazda Motor Corp | Vehicular frame structure |
| CN202295020U (en) * | 2011-10-16 | 2012-07-04 | 浙江吉利汽车研究院有限公司 | Front floor longitudinal beam reinforcing piece of automobile |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109987140A (en) * | 2017-12-29 | 2019-07-09 | 长城汽车股份有限公司 | Automobile frame |
| CN108891484A (en) * | 2018-04-25 | 2018-11-27 | 力帆实业(集团)股份有限公司 | Automobile front longitudinal beam assembly |
| CN108583689A (en) * | 2018-05-08 | 2018-09-28 | 江苏敏安电动汽车有限公司 | Longeron with force transferring structure and automobile |
| CN110510005A (en) * | 2019-07-18 | 2019-11-29 | 东风商用车有限公司 | A kind of commercial-vehicle cab longitudinal floor beam |
| CN110510005B (en) * | 2019-07-18 | 2024-05-10 | 东风商用车有限公司 | Commercial car driver's cabin floor longeron |
| CN110395315A (en) * | 2019-07-26 | 2019-11-01 | 鄂尔多斯市元盟工贸有限公司 | A kind of automobile front longitudinal beam inside reinforcement girder construction |
| CN113232726A (en) * | 2021-04-29 | 2021-08-10 | 宝能(广州)汽车研究院有限公司 | Longitudinal beam reinforcing plate and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106697057B (en) | 2019-04-19 |
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Effective date of registration: 20180508 Address after: No. 188, Miyun District, Miyun District, Beijing, Beijing Applicant after: Beijing treasure Car Co.,Ltd. Address before: 102206 Beiqi Futian Motor Company Limited, law and intellectual property department, Shayang Road, Shahe Town, Changping District, Beijing Applicant before: BEIQI FOTON MOTOR Co.,Ltd. |
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Address after: No. 188, Miyun District, Miyun District, Beijing, Beijing Patentee after: Beijing baowo Automobile Co.,Ltd. Address before: No. 188, Miyun District, Miyun District, Beijing, Beijing Patentee before: Beijing treasure Car Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Front longitudinal beam reinforcing plate, front longitudinal beam assembly and automobile Effective date of registration: 20211213 Granted publication date: 20190419 Pledgee: BEIJING AUTOMOTIVE GROUP Co.,Ltd. Pledgor: Beijing baowo Automobile Co.,Ltd. Registration number: Y2021990001167 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230925 Granted publication date: 20190419 Pledgee: BEIJING AUTOMOTIVE GROUP Co.,Ltd. Pledgor: Beijing baowo Automobile Co.,Ltd.|Borgward Automotive (China) Co., Ltd. Registration number: Y2021990001167 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20231007 Address after: 102206, Beijing, Shahe, Changping District Town, Sha Yang Road, Lao Wan Village North Patentee after: BEIQI FOTON MOTOR Co.,Ltd. Address before: 101300 Shuanghe Street, Shunyi District, Beijing, 99 Patentee before: BEIJING AUTOMOTIVE GROUP Co.,Ltd. Effective date of registration: 20231007 Address after: 101300 Shuanghe Street, Shunyi District, Beijing, 99 Patentee after: BEIJING AUTOMOTIVE GROUP Co.,Ltd. Address before: No. 188, Miyun District, Miyun District, Beijing, Beijing Patentee before: Beijing baowo Automobile Co.,Ltd. |