CN106926902B - Integral frame structure of tandem lap joint - Google Patents
Integral frame structure of tandem lap joint Download PDFInfo
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- CN106926902B CN106926902B CN201710213859.4A CN201710213859A CN106926902B CN 106926902 B CN106926902 B CN 106926902B CN 201710213859 A CN201710213859 A CN 201710213859A CN 106926902 B CN106926902 B CN 106926902B
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- girder
- floor
- frame structure
- tandem
- lap joint
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/02—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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Abstract
The invention relates to the field of automobile frame installation, in particular to a serial lap joint integral frame structure. The structure comprises a front girder, a rear girder, a first floor beam and a front girder Liang Yan, wherein the rear end of the front girder and the front end of the rear girder are of an opening structure formed by girders on the left side and the right side, the opening width of the rear end of the front girder is smaller than that of the front end of the rear girder, the rear ends of the front girder and the front ends of the rear girder are staggered, the tail end of the front end of the rear girder is connected with the outer side surface of the front girder through a front girder extension beam, the tail end of the rear end of the front girder is connected with the inner side surface of the rear girder through the first floor beam, and the front girder, the rear girder, the first floor beam and the front girder extension beam form an overlapping joint in the shape of a Chinese character 'kou'. The strengthening of the side beam structures at two sides can improve the torsional rigidity of the whole vehicle, so that the NVH performance of the whole vehicle is improved; the front girder and the rear girder are connected through the joint in the shape of the Chinese character 'kou', which is beneficial to the transmission of the frontal collision energy and ensures the frontal collision resistance of the whole vehicle.
Description
Technical Field
The invention relates to the field of automobile frame installation, in particular to a serial lap joint integral frame structure.
Background
The existing frame structure comprises: the front and rear girders are directly connected, as shown in the broken line frame of figure 1; the threshold beam is connected with the front girder 91 and the rear girder 92 through a plurality of extension beams (Y direction); the threshold beam 93 is connected in parallel with the front girder 91 and the rear girder 92 to constitute 2 parallel longitudinal beam structures.
Such a structure has the following disadvantages:
1. the torsion rigidity of the whole vehicle is poor;
2. the front girder and the rear girder are directly overlapped, and the joint rigidity and the strength are poor;
3. the whole car is not provided with a corner structure, energy cannot be well transferred during collision, and the front collision and rear collision performance is poor.
Disclosure of Invention
The invention provides a serial lap joint integral frame structure, which aims to solve the problem of insufficient rigidity and strength of the existing integral frame.
The invention provides a tandem lap joint integral frame structure, which comprises a front girder, a rear girder, a first floor beam and a front girder Liang Yan, wherein the rear end of the front girder and the front end of the rear girder are all of opening structures formed by left and right side girders, the opening width of the rear end of the front girder is smaller than that of the front end of the rear girder, the rear end of the front girder and the front end of the rear girder are arranged in a staggered manner, the tail end of the front end of the rear girder is connected with the outer side surface of the front girder through a front girder extension beam, the tail end of the rear end of the front girder is connected with the inner side surface of the rear girder through the first floor beam, and the front girder, the rear girder, the first floor beam and the front girder extension beam form a 'mouth' -shaped lap joint.
As a further improvement of the invention, the front girder is vertically connected with the first floor beam to form a T-shaped joint, the middle part of the first floor beam is connected with the tail of the rear end of the front girder, one end of the first floor beam is vertically connected with the inner side surface of the rear girder, and the other end of the first floor beam extends towards the middle part of the frame.
As a further improvement of the present invention, the front girder extension beams are vertically connected with the front girder and the rear girder, respectively.
As a further improvement of the invention, the structure comprises a threshold inner plate, wherein a threshold flanging is arranged on the outer side of the rear girder, and the threshold inner plate is connected to the threshold flanging.
As a further improvement of the invention, the structure comprises a floor, wherein the rear girder is provided with a rear large Liang Deban flanging, the floor is connected to the rear girder floor flanging, and the rear girder, the threshold inner plate and the floor form a closed cavity.
As a further improvement of the invention, the two sides of the front girder are provided with the front big Liang Deban flanges, and the front girder is connected with the floor through the front big Liang Deban flanges to form a closed cavity.
As a further improvement of the invention, the front end of the front girder turns outwards and forms a first obtuse angle with the rear end of the front girder, and the center of the front girder is offset from the center of the overlapping joint in the shape of a Chinese character 'kou'.
As a further improvement of the invention, the rear end of the rear girder turns inwards and forms a second obtuse angle with the front end of the rear girder, and the center of the front girder and the center of the rear girder are on the same straight line.
As a further improvement of the invention, the structure comprises a second floor beam, wherein two ends of the second floor beam are respectively and vertically connected with the corners of the front end and the rear end of the rear girder on the left side and the right side.
As a further improvement of the invention, the structure comprises a third floor beam, wherein two ends of the third floor beam are respectively and vertically connected with the rear ends of the front girders on the left side and the right side.
The beneficial effects of the invention are as follows: the strengthening of the side beam structures at two sides can improve the torsional rigidity of the whole vehicle, so that the NVH performance of the whole vehicle is improved; the front girder and the rear girder are connected through the joint in the shape of the Chinese character 'kou', which is beneficial to the transmission of the frontal collision energy and ensures the frontal collision resistance of the whole vehicle.
Drawings
FIG. 1 is a prior art frame structure of the present invention;
FIG. 2 is a block diagram of a tandem lap joint overall frame of the present invention;
figure 3 is a cross-sectional view of a tandem lap integral center frame structure A-A of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent.
Embodiment one:
as shown in fig. 1, the integral frame structure of tandem lap joint comprises a front girder 1, a rear girder 2, a first floor beam 3 and a front girder extension beam 4, wherein the rear end 12 of the front girder and the front end 21 of the rear girder are all open structures formed by left and right side girders, the opening width of the rear end 12 of the front girder is smaller than that of the front end 21 of the rear girder, the rear ends 12 of the front girder and the front end 21 of the rear girder are staggered, the tail end of the front end 21 of the rear girder is connected with the outer side surface of the front girder 1 through the front girder extension beam 4, the tail end of the rear end 12 of the front girder is connected with the inner side surface of the rear girder 2 through the first floor beam 3, and the front girder 2, and the front girder Liang Yan extension beam 4 form a lap joint 5 in a shape of a Chinese character 'kou'.
The structure of the 'mouth' -shaped lap joint 5 can effectively ensure the energy to be transferred to the side of the threshold beam in the process of receiving the frontal collision of the automobile, and ensure the integrity of the passenger cabin; meanwhile, the connecting strength and rigidity of the front and rear girders can be effectively ensured, and the front and rear lap joints are not easy to crack or fail.
Embodiment two:
as shown in fig. 1, on the basis of the first embodiment, a front girder 1 is vertically connected with a first floor cross member 3 to form a T-shaped joint, the middle part of the first floor cross member 3 is connected to the end of the rear end 12 of the front girder, one end of the first floor cross member is vertically connected to the inner side surface of a rear girder 2, the other end of the first floor cross member extends toward the middle part of the vehicle frame, and a front girder extension girder 4 is vertically connected with the front girder 1 and the rear girder 2 respectively. The T-shaped joint is beneficial to the transmission of the frontal collision energy to the two sides, and meanwhile, the bending rigidity of the whole vehicle can be improved.
Embodiment III:
as shown in fig. 2, on the basis of the first embodiment, the present structure further includes a rocker inner panel 6, a rocker flange is provided on the outer side of the rear girder 2, and the rocker inner panel 6 is connected to the rocker flange. The floor 7 is further included, the rear girder 2 is provided with a rear big Liang Deban flanging, the floor is connected to the rear girder floor flanging, and the rear girder 2, the threshold inner plate 6 and the floor 7 form a closed cavity.
The front girder 1 is provided with a front big Liang Deban flanging at both sides, and the front girder 1 is connected with the floor 7 through the front big Liang Deban flanging to form a closed cavity.
The rear girder 2 is overlapped with the threshold inner plate 6 and the floor 7 through resistance spot welding to form a closed cavity, so that the torsional rigidity and the bending rigidity of the whole car can be effectively improved.
Embodiment four:
as shown in fig. 1, on the basis of the first embodiment, the front end 11 of the front girder turns outwards and forms a first obtuse angle with the rear end 12 of the front girder, and a certain offset exists between the center of the front girder 1 and the center of the overlapping joint 5 in the shape of a Chinese character 'kou'. Wherein, the Y-direction offset distance P between the center of the front girder 1 and the center of the U-shaped lap joint 5 is 70mm. The front end 11 of the front girder turns inwards to form the characteristic that the first obtuse included angle alpha is 160 degrees, so that the energy can be effectively transmitted to the rear side in the front collision process of the automobile, meanwhile, the front girder 1 is ensured to face the outer direction of the automobile when in bending deformation, the front girder can be freely deformed, and the sufficient absorption of collision energy is ensured, thereby effectively protecting passengers. The Y-direction offset distance between the center of the front girder 1 and the center of the U-shaped overlap joint 5 can effectively ensure that energy is transferred to the threshold girder towards the rear side in the process of frontal collision of the automobile.
The rear girder rear end 22 turns inward and forms a second obtuse angle with the rear girder front end 21, and the center of the front girder 1 and the center of the rear girder 2 are on the same straight line. The rear end 22 of the rear girder turns inwards to form the characteristic that the second obtuse included angle beta is 150 degrees, so that the energy is effectively transmitted to the threshold beams from two sides when the automobile receives a frontal collision, the forward transmission of the rear collision energy is ensured, and the integrity of an oil tank or a power battery is ensured.
The structure further comprises a second floor beam 81 and a third floor beam 82, wherein two ends of the second floor beam 81 are respectively and vertically connected with corners of the front end and the rear end of the rear girder 2 on the left side and the right side, and two ends of the third floor beam 82 are respectively and vertically connected with the rear end 12 of the front girder on the left side and the right side.
The invention has the overall beneficial effects that:
a. the reinforcing of the side beam structures at two sides can improve the torsional rigidity of the whole vehicle, so that the NVH performance of the whole vehicle is improved;
b. the front girder and the rear girder are connected through the joint in the shape of a Chinese character 'kou', and the Y-direction offset distance is small from the center of the front girder, thereby being beneficial to the transmission of the front collision energy and ensuring the front collision resistance of the whole vehicle;
the T-shaped joint is beneficial to the transmission of the frontal collision energy to the two sides, and meanwhile, the bending rigidity of the whole vehicle can be improved;
d. the large included angle at the front end of the front girder is beneficial to the transmission of the frontal collision energy, so that the frontal collision resistance of the whole automobile is ensured;
e. the large included angle at the rear end of the rear girder is beneficial to the transmission of rear collision energy, and the integrity of an oil tank or a power battery in the area in front of the floor beam is effectively ensured.
The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.
Claims (10)
1. The utility model provides a whole frame structure of tandem type overlap joint, its characterized in that includes preceding girder, back girder, first floor crossbeam, preceding big Liang Yan stretch beam, preceding girder rear end and back girder front end are the open structure of constituteing by left and right sides roof beam, the open width of preceding girder rear end is less than the open width of back girder front end, preceding girder rear end and back girder front end staggered arrangement, the lateral surface of preceding girder is connected through preceding girder extension beam to the end of back girder front end, the medial surface of back girder is connected through first floor crossbeam to the end of preceding girder rear end, preceding girder, back girder, first floor crossbeam, preceding girder extension beam constitute "mouthful" style of calligraphy overlap joint.
2. The tandem lap joint whole frame structure according to claim 1, wherein the front girder is vertically connected with the first floor cross member to form a T-shaped joint, the middle part of the first floor cross member is connected to the end of the rear end of the front girder, one end of the first floor cross member is vertically connected to the inner side surface of the rear girder, and the other end of the first floor cross member extends toward the middle part of the frame.
3. The tandem lap joint whole frame structure according to claim 1, wherein the front girder extension beams are vertically connected with the front girder and the rear girder, respectively.
4. The tandem lap joint whole frame structure according to claim 1, comprising a rocker inner panel, wherein a rocker flange is provided on the outer side of the rear girder, and the rocker inner panel is connected to the rocker flange.
5. The tandem lap joint whole frame structure according to claim 4, comprising a floor, said rear girder having a rear large Liang Deban flange, said floor being attached to the rear girder floor flange, said rear girder, inner sill plate, floor forming a closed cavity.
6. The tandem lap joint whole frame structure according to claim 5, wherein both sides of the front girder are provided with a front large Liang Deban flange, and the front girder is connected with the floor through the front large Liang Deban flange to form a closed cavity.
7. The tandem lap joint whole frame structure according to claim 1, wherein the front end of the front girder turns to the outside and forms a first obtuse angle with the rear end of the front girder, and the center of the front girder is offset from the center of the lap joint in the shape of a Chinese character 'kou'.
8. The tandem lap joint whole frame structure according to claim 1, wherein the rear end of the rear girder turns inward and forms a second obtuse angle with the front end of the rear girder, and the center of the front girder and the center of the rear girder are on the same straight line.
9. The tandem overlapping unitary frame structure of claim 8, comprising a second floor cross member having two ends that are vertically connected to the corners of the front and rear ends of the left and right rear cross members, respectively.
10. The tandem overlapping unitary frame structure of claim 1, including a third floor cross member having two ends vertically connected to the rear ends of the left and right side front cross members, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710213859.4A CN106926902B (en) | 2017-04-01 | 2017-04-01 | Integral frame structure of tandem lap joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710213859.4A CN106926902B (en) | 2017-04-01 | 2017-04-01 | Integral frame structure of tandem lap joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106926902A CN106926902A (en) | 2017-07-07 |
| CN106926902B true CN106926902B (en) | 2023-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710213859.4A Active CN106926902B (en) | 2017-04-01 | 2017-04-01 | Integral frame structure of tandem lap joint |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201390293Y (en) * | 2008-12-19 | 2010-01-27 | 奇瑞汽车股份有限公司 | Vehicle body reinforcing structure at bridging position of front floor and rear floor |
| CN204150122U (en) * | 2014-10-11 | 2015-02-11 | 重庆长安汽车股份有限公司 | A kind of automobile door sill beam assembly structure |
| CN105015620A (en) * | 2015-07-24 | 2015-11-04 | 奇瑞汽车股份有限公司 | Passenger car back longitudinal beam structure |
| JP2016107767A (en) * | 2014-12-04 | 2016-06-20 | フタバ産業株式会社 | Vehicle side part structure |
| CN106494511A (en) * | 2016-11-29 | 2017-03-15 | 上汽通用五菱汽车股份有限公司 | Girder assembly and automobile rear lower body structure after a kind of automobile |
| CN206749898U (en) * | 2017-04-01 | 2017-12-15 | 上汽通用五菱汽车股份有限公司 | A kind of Integral frame structure of tandem overlap joint |
-
2017
- 2017-04-01 CN CN201710213859.4A patent/CN106926902B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201390293Y (en) * | 2008-12-19 | 2010-01-27 | 奇瑞汽车股份有限公司 | Vehicle body reinforcing structure at bridging position of front floor and rear floor |
| CN204150122U (en) * | 2014-10-11 | 2015-02-11 | 重庆长安汽车股份有限公司 | A kind of automobile door sill beam assembly structure |
| JP2016107767A (en) * | 2014-12-04 | 2016-06-20 | フタバ産業株式会社 | Vehicle side part structure |
| CN105015620A (en) * | 2015-07-24 | 2015-11-04 | 奇瑞汽车股份有限公司 | Passenger car back longitudinal beam structure |
| CN106494511A (en) * | 2016-11-29 | 2017-03-15 | 上汽通用五菱汽车股份有限公司 | Girder assembly and automobile rear lower body structure after a kind of automobile |
| CN206749898U (en) * | 2017-04-01 | 2017-12-15 | 上汽通用五菱汽车股份有限公司 | A kind of Integral frame structure of tandem overlap joint |
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| Publication number | Publication date |
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| CN106926902A (en) | 2017-07-07 |
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