CN214524075U - Lightweight structure of automobile door ring - Google Patents
Lightweight structure of automobile door ring Download PDFInfo
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- CN214524075U CN214524075U CN202120098024.0U CN202120098024U CN214524075U CN 214524075 U CN214524075 U CN 214524075U CN 202120098024 U CN202120098024 U CN 202120098024U CN 214524075 U CN214524075 U CN 214524075U
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 21
- 229910000712 Boron steel Inorganic materials 0.000 claims abstract description 7
- 238000003466 welding Methods 0.000 claims description 31
- 238000000034 method Methods 0.000 description 6
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 5
- 229910052796 boron Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 230000037396 body weight Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
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Abstract
The utility model discloses an automobile door ring lightweight structure, its characterized in that: the door ring assembly is made of thermal forming boron steel series materials, is arranged on the side wall of a vehicle body framework, and is welded on the vehicle body framework. The door ring assembly comprises an upper door frame boundary beam, an A column, a B column and a threshold beam, one end of the upper door frame boundary beam is connected with the top of the A column, the other end of the upper door frame boundary beam is connected with the top of the B column, the other end of the A column is connected with one end of the threshold beam, and the bottom of the B column is connected with the middle of the threshold beam. The door frame boundary beam, the A column, the B column and the threshold beam are all made of thermal forming 22MnB5 series materials, so that the mass of the door ring assembly is reduced by about 17 percent compared with that of a common steel structure, the mass is greatly reduced, light components are lightened, and the requirement of the overall light index of a vehicle body is met.
Description
Technical Field
The utility model belongs to the technical field of the automobile manufacturing, concretely relates to car door ring lightweight structure.
Background
At present, high-strength steel is commonly used for automobile bodies in the automobile industry, and the tensile strength of the material is about 400-450 MPa. After a proper amount of boron element is added into the steel, the steel is processed by a hot forming process, the tensile strength of the steel reaches 1300-1600MPa, the yield strength reaches over 1000MPa, and the steel can bear the pressure of over 10 tons per square centimeter. The hot forming steel product has higher yield strength and mechanical safety, can adopt thinner sheet materials on main stressed parts of the automobile to realize external force which can be borne only by thick common high-strength sheet materials in the past, and can improve the bearing capacity by 30 percent, so that the rigidity strength and the safety performance of the automobile body reach better levels.
The automobile side wall related modeling waist line, the side air bag/air curtain and the side impact energy resistance need to consider important basic indexes such as section space, modeling, rigidity and strength, light weight and the like at the initial design stage, and guarantee the target definition of the automobile. The automobile door ring structure is usually connected to a vehicle in a welding and bolt connection mode, a part-splitting mode is adopted in the traditional door ring structure development, the structure mostly adopts a series of common high-strength steel materials HC420/780 DP-HC 340/590DP, the weight is large, and the automobile door ring structure is not suitable for the safety performance development and upgrading of the same platform automobile type.
According to the automobile body deformation structural area predicted by design, the side anti-collision protection structure, the reasonable in-vehicle space structure and the like, effective protection can be provided for passengers. For this reason, the door ring structure plays an important role in various safety regulations. The design of ordinary high strength steel can only be realized through increasing other reinforcement, increase part material thickness, leads to whole automobile body weight to increase, can not satisfy the lightweight index simultaneously.
SUMMERY OF THE UTILITY MODEL
To exist not enough among the prior art, the utility model aims to provide a simple structure, weight reduction, simple to operate's car door ring lightweight structure frame for solve the differentiation problem that prior art standard exists, and be applicable to the car door ring lightweight structure of many configurations on the same platform motorcycle type.
In order to achieve the above purpose, the technical scheme of the utility model is that: the utility model provides an automobile door ring lightweight structure which characterized in that: the door ring assembly is made of thermal forming boron steel series materials, is arranged on the side wall of a vehicle body framework, and is welded on the vehicle body framework.
Further, the door ring assembly includes door frame boundary beam, A post, B post and threshold roof beam, and the one end of going up the door frame boundary beam is connected with the top of A post, and the other end of going up the door frame boundary beam is connected with the top of B post, and the other end of A post is connected with the one end connection of threshold roof beam, and the middle part at the threshold roof beam is connected to the bottom of B post.
Furthermore, the A column is of an L-shaped structure, and the B column is connected to the threshold beam to form a T-shaped structure.
Furthermore, the upper door frame side beam, the A column, the B column and the threshold beam are all made of thermal forming steel 22MnB 5.
Furthermore, the junction of the upper door frame boundary beam and the A column and the junction of the doorsill beam and the A column and the B column are connected by laser tailor welding.
Furthermore, lightening holes are formed in the upper door frame side beam, the A column, the B column and the threshold beam.
Furthermore, be equipped with the welding stent on A post and the threshold roof beam, welding stent fixed connection is on A post and threshold roof beam, and the opposite side welding of welding stent is on the automobile body skeleton, and the knocker assembly passes through welding stent fixed connection on the automobile body skeleton.
Furthermore, a welding bracket is also arranged at the joint of the threshold beam and the A-pillar.
Adopt the utility model discloses technical scheme's advantage does:
1. the utility model discloses an adopt thermal forming boron steel, its advantage that has for ordinary high strength steel is as follows: 1. the trace boron element is utilized, and the high formability and the extremely high strength of the material are obtained by a method of rapid cooling after the hot forming process; 2. the addition of trace boron element ensures the high strength level of the parts, and the strength of the steel plate can reach 1500MP at the lowest, which is 3-4 times of the strength index of the common steel plate; when the material is applied to the automobile body, the structural design material thickness can be directly reduced, the automobile body mass is reduced, and the bending rigidity of the automobile body can be improved; 3. cage safety car body door ring is designed and developed by the hot formed steel, to laws and regulations requirements such as side collision, offset collision, provides comprehensive passenger living space protection.
2. The utility model discloses door frame boundary beam, A post, B post and threshold roof beam have all adopted the 22MnB5 series of materials of thermoforming, make the door ring assembly quality compare ordinary steel structure and reduce about 17%, and the quality reduces greatly, and the lightweight part satisfies the whole lightweight index requirement of automobile body.
3. The utility model discloses welding stent has both played the connection effect when welding, has still played the effect of strengthening door ring assembly structural strength, has still increased automobile body end structural fixation moreover, has guaranteed this body rigidity intensity of side wall structure when guaranteeing protection passenger living space. The mounting mode can ensure the relative stability of the vehicle and the side wall structure, and ensure the stability of the whole structure while ensuring the light weight of the structure to a certain extent.
Drawings
The invention will be described in further detail with reference to the following drawings and detailed description:
fig. 1 is a schematic view of an automobile door loop structure of the present invention;
FIG. 2 is a schematic view of the split body of the door ring of the present invention;
FIG. 3 is a schematic view of the A-pillar structure of the present invention;
fig. 4 is the connection schematic diagram of the a pillar and the threshold beam of the present invention.
The labels in the above figures are respectively: 1. a door ring assembly; 2. an upper door frame edge beam; 3. a column A; 4. a column B; 5. a threshold beam; 6. lightening holes; 7. and (6) welding the bracket.
Detailed Description
In the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "plane direction", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
As shown in fig. 1 and 2, the light weight structure of the automobile door ring is characterized in that: the door ring assembly comprises a door ring assembly 1, wherein the door ring assembly 1 is made of a thermal forming boron steel series material, the door ring assembly 1 is installed on the side wall of a vehicle body framework, and the door ring assembly 1 is welded on the vehicle body framework. Door ring assembly 1 includes door frame boundary beam 2, A post 3, B post 4 and threshold roof beam 5, and the one end of going up door frame boundary beam 2 is connected with the top of A post 3, and the other end of going up door frame boundary beam 2 is connected with the top of B post 4, and the other end of A post 3 and the one end connection of threshold roof beam 5, and the middle part at threshold roof beam 5 is connected to the bottom of B post 4.
The utility model discloses an adopt thermal forming boron steel, its advantage that has for ordinary high strength steel is as follows: 1. the trace boron element is utilized, and the high formability and the extremely high strength of the material are obtained by a method of rapid cooling after the hot forming process; 2. the addition of trace boron element ensures the high strength level of the parts, and the strength of the steel plate can reach 1500MP at the lowest, which is 3-4 times of the strength index of the common steel plate; when the material is applied to the automobile body, the structural design material thickness can be directly reduced, the automobile body mass is reduced, and the bending rigidity of the automobile body can be improved; 3. cage safety car body door ring is designed and developed by the hot formed steel, to laws and regulations requirements such as side collision, offset collision, provides comprehensive passenger living space protection.
The A-pillar 3 is of an L-shaped structure, and the B-pillar 4 is connected to the threshold beam 5 to form a T-shaped structure. The upper door frame side beam 2, the A column 3, the B column 4 and the threshold beam 5 are all made of hot forming steel 22MnB 5. The hot forming steel 22MnB5 material is applied to 4 parts such as an A column, a B column, an upper doorframe side beam, a doorsill beam and the like, and the hot forming application enables the weight of the door ring structure to be reduced by 17% in total, so that the weight reduction coefficient of the vehicle body structure is obviously improved.
The joints of the upper door frame boundary beam 2 and the A-pillar 3 and the B-pillar 4 and the joints of the threshold beam 5 and the A-pillar 3 and the B-pillar 4 are all connected by laser tailor welding. The door ring assembly is made of thermal forming boron steel series materials, and according to the laser welding process requirements, suitable lap joint positions are selected for laser welding at the connecting positions between the upper door frame boundary beam 2, the A column 3, the B column 4 and the threshold beam 5. Meanwhile, a welding support structure is added in the pillar A, and lightening holes 6 are formed in the door frame boundary beam 2, the pillar A3, the pillar B4 and the threshold beam 5, so that the safety protection performance is guaranteed while the weight is reduced. The door ring installation assembly is connected with the side wall end of the vehicle body, installation and matching are carried out according to different rule requirements, and the installation form is flexible and various.
Be equipped with welding stent 7 on A post 3 and threshold roof beam 5, welding stent 7 fixed connection is on A post 3 and threshold roof beam 5, and the opposite side welding of welding stent 7 is on the automobile body skeleton, and door ring assembly 1 passes through welding stent 7 fixed connection on the automobile body skeleton. The junction of the sill beam 5 and the a-pillar 3 is also provided with a welding bracket 7.
The door ring assembly is connected to the side wall system of the vehicle body through welding and bolts. The welding support has not only played the connection effect when welding, has still played the effect of strengthening door ring assembly structural strength, but also has increased automobile body end structural fixation, has guaranteed the body rigidity intensity of this side wall structure when guaranteeing protection passenger living space. The mounting mode can ensure the relative stability of the vehicle and the side wall structure, and ensure the stability of the whole structure while ensuring the light weight of the structure to a certain extent.
The door frame boundary beam 2, the A column 3, the B column 4 and the threshold beam 5 are all made of thermal forming 22MnB5 series materials, so that the mass of the door ring assembly is reduced by about 17 percent compared with that of a common steel structure, the mass is greatly reduced, and light parts meet the overall light index requirement of an automobile body.
The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements can be made without the technical solutions of the present invention, or the present invention can be directly applied to other occasions without the improvements, and all are within the protection scope of the present invention.
Claims (8)
1. The utility model provides an automobile door ring lightweight structure which characterized in that: the automobile door ring assembly is characterized by comprising a door ring assembly (1), wherein the door ring assembly (1) is made of a thermal forming boron steel series material, the door ring assembly (1) is installed on the side wall of an automobile body framework, and the door ring assembly (1) is welded on the automobile body framework.
2. The automobile door ring light-weight structure according to claim 1, characterized in that: the doorring assembly (1) comprises an upper doorframe boundary beam (2), an A column (3), a B column (4) and a doorsill beam (5), one end of the upper doorframe boundary beam (2) is connected with the top of the A column (3), the other end of the upper doorframe boundary beam (2) is connected with the top of the B column (4), the other end of the A column (3) is connected with one end of the doorsill beam (5), and the bottom of the B column (4) is connected with the middle of the doorsill beam (5).
3. The automobile door ring light-weight structure according to claim 2, characterized in that: the A column (3) is of an L-shaped structure, and the B column (4) is connected to the threshold beam (5) to form a T-shaped structure.
4. The automobile door ring light-weight structure according to claim 2 or 3, characterized in that: the upper door frame side beam (2), the A column (3), the B column (4) and the threshold beam (5) are all made of thermal forming steel 22MnB5 materials.
5. The automobile door ring light-weight structure according to claim 4, characterized in that: the junction of the upper door frame boundary beam (2) and the A column (3) and the B column (4) and the junction of the threshold beam (5) and the A column (3) and the B column (4) are all connected by laser tailor welding.
6. The automobile door ring light-weight structure according to claim 5, characterized in that: and lightening holes (6) are formed in the upper door frame side beam (2), the A column (3), the B column (4) and the threshold beam (5).
7. The automobile door ring light-weight structure according to claim 6, characterized in that: be equipped with welding stent (7) on A post (3) and threshold roof beam (5), welding stent (7) fixed connection is on A post (3) and threshold roof beam (5), and the opposite side welding of welding stent (7) is on the automobile body skeleton, and door ring assembly (1) passes through welding stent (7) fixed connection on the automobile body skeleton.
8. The automobile door ring light-weight structure according to claim 6, characterized in that: and a welding bracket (7) is also arranged at the joint of the threshold beam (5) and the A column (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120098024.0U CN214524075U (en) | 2021-01-14 | 2021-01-14 | Lightweight structure of automobile door ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120098024.0U CN214524075U (en) | 2021-01-14 | 2021-01-14 | Lightweight structure of automobile door ring |
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| Publication Number | Publication Date |
|---|---|
| CN214524075U true CN214524075U (en) | 2021-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120098024.0U Active CN214524075U (en) | 2021-01-14 | 2021-01-14 | Lightweight structure of automobile door ring |
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| Country | Link |
|---|---|
| CN (1) | CN214524075U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114291167A (en) * | 2021-12-28 | 2022-04-08 | 东风汽车集团股份有限公司 | Threshold beam structure and vehicle |
| CN115257938A (en) * | 2022-07-20 | 2022-11-01 | 岚图汽车科技有限公司 | A post, door ring and vehicle |
-
2021
- 2021-01-14 CN CN202120098024.0U patent/CN214524075U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114291167A (en) * | 2021-12-28 | 2022-04-08 | 东风汽车集团股份有限公司 | Threshold beam structure and vehicle |
| CN114291167B (en) * | 2021-12-28 | 2023-09-05 | 东风汽车集团股份有限公司 | Threshold beam structure and vehicle |
| CN115257938A (en) * | 2022-07-20 | 2022-11-01 | 岚图汽车科技有限公司 | A post, door ring and vehicle |
| CN115257938B (en) * | 2022-07-20 | 2024-04-16 | 岚图汽车科技有限公司 | A post, door ring and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240508 Address after: 241000 No. 8, Changchun Road, Wuhu economic and Technological Development Zone, Anhui, China Patentee after: CHERY AUTOMOBILE Co.,Ltd. Country or region after: China Address before: 241000 Building 8, science and Technology Industrial Park, 717 Zhongshan South Road, Yijiang District, Wuhu City, Anhui Province Patentee before: Chery Commercial Vehicles (Anhui) Co., Ltd. Country or region before: China |
|
| TR01 | Transfer of patent right |