CN114132412A - Reinforcing structure for increasing rigidity of seat mounting point - Google Patents
Reinforcing structure for increasing rigidity of seat mounting point Download PDFInfo
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- CN114132412A CN114132412A CN202111432606.9A CN202111432606A CN114132412A CN 114132412 A CN114132412 A CN 114132412A CN 202111432606 A CN202111432606 A CN 202111432606A CN 114132412 A CN114132412 A CN 114132412A
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- floor
- reinforcing
- front floor
- middle section
- cross beam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D65/00—Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for
- B62D65/02—Joining sub-units or components to, or positioning sub-units or components with respect to, body shell or other sub-units or components
- B62D65/14—Joining sub-units or components to, or positioning sub-units or components with respect to, body shell or other sub-units or components the sub-units or components being passenger compartment fittings, e.g. seats, linings, trim, instrument panels
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- Combustion & Propulsion (AREA)
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- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention relates to an automobile body seat mounting structure, in particular to a reinforcing structure for increasing the rigidity of a seat mounting point. The reinforcing structure comprises a reinforcing beam, wherein the reinforcing beam comprises a pair of front row seat rear cross beams and a rear floor front cross beam which are connected with a front floor lower rear reinforcing cross beam, and the reinforcing beam also comprises a pair of front floor middle section reinforcing longitudinal beams and a pair of rear floor front reinforcing pieces; the front end of the front floor middle section reinforcing longitudinal beam is connected with the front floor lower rear reinforcing cross beam, and the rear end of the front floor middle section reinforcing longitudinal beam is connected with the front end of the rear floor front reinforcing piece; the rear end of the front rear floor reinforcement is connected with a lower rear reinforcing cross beam of the front floor. The reinforcing structure not only meets the rigidity of the mounting point of the front row seat, but also greatly improves the local mode of the front floor. Parts required by the structure are connected by adopting a welding process, so that the connection is reliable, the system cost is lower, and the manufacturability is good.
Description
Technical Field
The invention relates to an automobile body seat mounting structure, in particular to a reinforcing structure for increasing the rigidity of a seat mounting point.
Background
Along with the development of new energy automobile, the market share of PHEV motorcycle type is higher and higher, and the battery of most PHEV motorcycle types is arranged under the front floor, on the one hand, in order to satisfy whole car ground clearance, the front floor panel can upwards lift along with arranging Z of battery, and meanwhile in order to guarantee back row man-machine travelling comfort, front seat rear beam can antedisplacement, therefore front seat mounting point can't arrange directly over the seat crossbeam Z, leads to the obvious weakening of seat mounting point rigidity. On the other hand, in the past, the penetrating longitudinal beams are arranged in the lap joint area of the middle section of the front floor and the front floor of the fuel vehicle type, but due to the arrangement of batteries, the lower longitudinal beam of the front floor cannot be kept continuously, and the structural change greatly weakens the rigidity of the seat mounting point.
In the conventional vehicle type, four mounting points of a front-row seat are arranged above a seat beam, the rigidity of the mounting points of the seat is easy to achieve, but after a battery is arranged in a front floor of the PHEV type, the rigidity of the mounting points of the front-row seat is greatly influenced by the change of a vehicle body structure, and the rigidity index of the mounting points cannot be achieved.
Disclosure of Invention
The invention provides a reinforcing structure for coping with the rigidity of a mounting point of a front-row seat, systematically coping with the local rigidity of a vehicle body, and simultaneously reinforcing the whole of a front-rear floor lap joint area.
The technical scheme of the invention is that the reinforcing structure for increasing the rigidity of the seat mounting point comprises a reinforcing beam, a front floor middle section and a front floor which cover the reinforcing beam, and a front row seat rear cross beam mounting bracket; the stiffening beam comprises a pair of front row seat rear cross beams and a rear floor front cross beam which are connected with the front floor lower rear stiffening cross beam, and also comprises a pair of front floor middle section stiffening longitudinal beams and a pair of rear floor front stiffeners;
the front end of the front floor middle section reinforcing longitudinal beam is connected with the front floor lower rear reinforcing cross beam, and the rear end of the front floor middle section reinforcing longitudinal beam is connected with the front end of the rear floor front reinforcing piece;
the rear end of the front rear floor reinforcement is connected with a lower rear reinforcing cross beam of the front floor.
Furthermore, the front floor is positioned at the left side and the right side of the middle section of the front floor; in a YZ section, the middle section of the front floor is in a 'Pi' shape, Y is the left and right direction of the vehicle common coordinate, and Z is the up and down direction of the vehicle common coordinate.
Furthermore, the front seat rear cross beam mounting bracket is matched with the intersection of the front floor middle section and the front floor; and in an XY plane, the front-row seat rear cross beam mounting bracket is positioned on the outer side of the intersection of the front floor middle section reinforcing longitudinal beam and the front floor lower rear reinforcing cross beam, and X is the front-rear direction of a vehicle common coordinate.
Wherein, on the YZ section, the whole front floor middle section reinforcing longitudinal beam is Z-shaped; the Z-shaped top is bent inwards to form two first cavities with the n-shaped top at the front end overlapped with the front floor middle section, the front floor middle section reinforcing longitudinal beam, the row seat rear cross beam mounting bracket and the front floor; the cavity body is extended backwards along the X direction to the tail end of the four lap joints, the bending is gradually increased, and the cavity body is gradually increased from the top of the 'several' shape to the two sides of the 'several' shape.
Wherein, on the YZ section, the front seat rear beam mounting bracket is integrally L-shaped; at the front end of the lap joint of the middle section of the front floor, the reinforcing longitudinal beam of the middle section of the front floor, the mounting bracket of the rear cross beam of the front row seat and the front floor, an L-shaped vertical arm is jointed with the outer surfaces of two sides of a reversed U-shaped section of the middle section of the front floor, an L-shaped vertical arm is jointed with the upper surface of the front floor, a corner of the L-shaped vertical arm is bent outwards to form two second cavities with the tail end of the reversed U-shaped vertical arm and the upper surface of the front floor; the L-shaped corner is bent outwards and gradually restored until the corner is jointed with the 'n' -shaped part.
Specifically, two Y-direction three-layer lap joints are formed at the lapped front ends of the front floor middle section, the front floor middle section reinforcing longitudinal beam, the front-row seat rear cross beam mounting bracket and the front floor by the front floor middle section reinforcing longitudinal beam, the middle of the front floor middle section in a 'n' shape and the front-row seat rear cross beam mounting bracket from inside to outside.
Specifically, the rear ends of the front floor middle section, the front floor middle section reinforcing longitudinal beam, the front row seat rear cross beam mounting bracket and the front floor in lap joint are from top to bottom, and two X-direction four-layer lap joints are formed by the front row seat rear cross beam mounting bracket, the tail end of the front floor middle section 'n' shape, the front floor and the front floor middle section reinforcing longitudinal beam.
Furthermore, the front reinforcing piece of the rear floor is Z-shaped, and two third cavities are formed in the middle of the Z-shaped front reinforcing piece and the middle of the middle section of the front floor.
Wherein, the lap joints are all welded.
Preferably, the distance between the pair of front floor middle section reinforcing longitudinal beams is 0; the distance between the pair of rear floor front reinforcements is 0.
The invention has the beneficial effects that:
the structure for increasing the rigidity of the seat mounting point is characterized in that the reinforcing longitudinal beam structure is added, the rear cross beam of the front row seat is connected with the front cross beam of the rear floor, a new beam system force transmission channel is formed while the rigidity of the mounting point is improved, meanwhile, the lap-jointed weak area of the front floor and the rear floor is supported, the local mode of the floor is greatly improved, all parts of the structure are connected in a welding mode, and compared with a general assembly reinforcing piece, the structure is lighter in weight, lower in cost and good in technological performance.
The reinforcing structure is integrally in a shape like a Chinese character 'kou', the front floor lower rear reinforcing cross beam is connected with the front floor middle reinforcing longitudinal beam and the rear floor front reinforcing part and extends to be connected with the rear floor front cross beam in the X direction to form a new force transmission channel, so that the rigidity of a seat rear mounting point on the side of the middle channel is obviously improved, meanwhile, the area between the front floor lower longitudinal beams (left/right) is divided into three parts, the local mode of the lap joint of the front floor and the rear floor is greatly improved, and the reinforcing structure also has a good supporting effect on side collision. The front floor middle section reinforcing longitudinal beam extends backwards to the rear floor front cross beam to form two rows of Z-direction lap joints, on one hand, the integrity and the good force transmission path of the beam system structure are guaranteed, on the other hand, the lap joint area of the front floor and the rear floor is strengthened, and the vehicle body structure is greatly improved. Meanwhile, the beam system structure added in the invention has another advantage that the Z-direction battery arrangement space is limited, the advantage of the cross-section structure of the middle section of the front floor in a shape like a Chinese character 'ji' is skillfully borrowed, the size of the added cavity mainly extends towards the Y direction, the space size is utilized to the maximum extent under the condition of ensuring that the peripheral boundary arrangement is not influenced, the structure is not only beneficial to the optimization of the arrangement space, but also meets the rigidity requirement and the process requirement of the seat installation point.
Drawings
FIG. 1 is a schematic view of a reinforcement beam;
FIG. 2 is an exploded view of the reinforcement beam;
FIG. 3 is a cross-sectional view of the YZ plane of FIG. 1 taken along line A-A;
FIG. 4 is a cross-sectional view of the YZ plane of FIG. 1 taken along line B-B;
FIG. 5 is a cross-sectional view of the YZ plane of FIG. 1 taken along line C-C;
reference is made to 1/1 '-front seat rear cross member, 2-front floor lower rear reinforcement cross member, 3-rear floor front cross member, 4/4' -front floor middle section reinforcement longitudinal member, 5/5 '-rear floor front reinforcement member, 6/6' -front seat rear cross member mounting bracket, 7-front floor middle section, 8/8 '-front floor, 9/9' -first cavity, 10/10 '-second cavity, 11/11' -triple lap joint, 12/12 '-quadruple lap joint, 13/13' -third cavity.
Detailed Description
Examples Assembly of the inventive Structure
As shown in FIGS. 1 to 3, the reinforcing structure of the invention comprises a reinforcing beam, a front floor middle section 7 and a front floor 8/8 'which cover the reinforcing beam, and a front row seat rear cross beam mounting bracket 6/6'; the reinforcing beam comprises a pair of front seat rear cross beams 1/1' and a rear floor front cross beam 3 which are connected by a front underfloor rear reinforcing cross beam 2; the reinforcement beam further includes a pair of front mid-floor reinforcement stringers 4/4 'and a pair of rear floor front reinforcements 5/5'; the front end of the front floor middle section reinforcing longitudinal beam 4/4 'is connected with the front floor lower rear reinforcing cross beam 2, and the rear end is connected with the front end of the rear floor front reinforcing piece 5/5'; the rear end of the rear under-floor front reinforcement 5/5' is connected to the front under-floor rear reinforcement beam 3.
As a preferred embodiment, as shown in fig. 2 and 3, the front floor 8/8' is located on the left and right sides of the front floor mid-section 7; on a YZ section, the middle section 7 of the front floor is in a 'n' shape; the front seat rear cross member mounting bracket 6/6 'is mated with the intersection of the front floor mid-section 7 and the front floor 8/8'; the front seat rear cross beam mounting bracket 6/6 'is positioned on the outer side of the intersection of the front floor middle section reinforcing longitudinal beam 4/4' and the front floor lower rear reinforcing cross beam 2 in the XY plane; the X is the front and back direction of the vehicle common coordinate, the Y is the up and down direction of the vehicle common coordinate, and the Z is the left and right direction of the vehicle common coordinate.
As another preferred embodiment, as shown in fig. 3 to 5, in a YZ cross section, the front floor middle section reinforcing side member 4/4' is entirely in a "Z" shape; at the front end where the front floor middle section 7, the front floor middle section reinforcing longitudinal beam 4/4 ', the row seat rear cross beam mounting bracket 6/6' and the front floor 8/8 'are overlapped, the top of the Z shape is bent inwards to form two first cavities 9/9' with the top of the Z shape; the first cavity 9/9 ' gradually increases from the top of the ' n ' shape to the two sides of the ' n ' shape;
on a YZ section, the front seat rear cross beam mounting bracket 6/6' is integrally L-shaped; at the front end where the front floor middle section 7, the front floor middle section reinforcing longitudinal beam 4/4 ', the front row seat rear cross beam mounting bracket 6/6' and the front floor 8/8 'overlap, an "L" -shaped vertical arm is attached to the outer surfaces of two sides of a "few" shape of the front floor middle section 7, an "L" -shaped vertical arm is attached to the upper surface of the front floor 8/8', a corner of the "L" -shaped vertical arm is bent outwards to form two second cavities 10/10 'with the end of the "few" shape and the upper surface of the front floor 8/8'; the L-shaped corner is bent outwards and gradually restored until the corner is jointed with the 'n' -shaped part;
at the front end of the lap joint of the front floor middle section 7, the front floor middle section reinforcing longitudinal beam 4/4 ', the front row seat rear cross beam mounting bracket 6/6' and the front floor 8/8 ', from inside to outside, 2Y-direction three-layer lap joints 11/11' are formed by the front floor middle section reinforcing longitudinal beam 4/4 ', the middle part of the' several 'shape of the front floor middle section 7 and the front row seat rear cross beam mounting bracket 6/6';
at the overlapped rear ends of the front floor middle section 7, the front floor middle section reinforcing longitudinal beam 4/4 ', the front row seat rear cross beam mounting bracket 6/6 ' and the front floor 8/8 ', 2 four-layer overlapped 12/12 ' in the X direction are formed by the front row seat rear cross beam mounting bracket 6/6 ', the tail end of the reversed U shape of the front floor middle section 7, the front floor 8/8 ' and the front floor middle section reinforcing longitudinal beam 4/4 ' from top to bottom;
the front rear floor reinforcement 5/5 'is "Z" shaped and forms two third cavities 13/13' with the middle of the "bottom" of the front floor center section 7.
In a preferred embodiment, the lap joints are all welded.
As another preferred embodiment, in order to further increase the strength of the reinforcing structure, the distances between the pair of front floor center section reinforcing stringers 4/4 'and between the pair of rear floor front reinforcements 5/5' may be adjusted, the closer the distance, the better the strength. Therefore, it is preferable to adjust the interval between the pair of front floor center section reinforcing side members 4/4' to 0; the spacing between the pair of rear floor front reinforcements 5/5' is 0.
Claims (10)
1. A reinforcing structure for increasing rigidity of a seat mounting point comprises a reinforcing beam, a front floor middle section (7) and a front floor (8/8 ') which are covered on the reinforcing beam, and a front seat rear cross beam mounting bracket (6/6'); the stiffening beam comprises a pair of front seat rear cross beams (1/1') and a rear floor front cross beam (3) which are connected by a front underfloor rear stiffening cross beam (2), and is characterized in that: the reinforcement beam further comprising a pair of front mid-floor reinforcement stringers (4/4 ') and a pair of rear floor front reinforcements (5/5');
the front end of the front floor middle section reinforcing longitudinal beam (4/4 ') is connected with a front floor lower rear reinforcing cross beam (2), and the rear end of the front floor middle section reinforcing longitudinal beam is connected with the front end of a rear floor front reinforcing piece (5/5');
the rear end of the rear floor front reinforcement (5/5') is connected to the front underfloor rear reinforcement cross member (3).
2. The reinforcing structure of claim 1, wherein: the front floor (8/8') is positioned at the left and right sides of the front floor middle section (7); on a YZ section, the middle section (7) of the front floor is of a 'n' shape, Y is the left and right direction of the vehicle common coordinate, and Z is the up and down direction of the vehicle common coordinate.
3. The reinforcing structure of claim 2, wherein: the front seat rear cross member mounting bracket (6/6 ') engaging the intersection of the front floor mid-section (7) and the front floor (8/8'); and in an XY plane, the front-row seat rear cross beam mounting bracket (6/6 ') is positioned outside the intersection of the front floor middle-section reinforcing longitudinal beam (4/4') and the front floor lower rear reinforcing cross beam (2), and X is the front-rear direction of common coordinates of the vehicle.
4. A reinforcing arrangement according to claim 3, wherein: on a YZ section, the front floor middle section reinforcing longitudinal beam (4/4') is integrally Z-shaped; at the front end where the front floor middle section (7), the front floor middle section reinforcing longitudinal beam (4/4 '), the row seat rear cross beam mounting bracket (6/6') and the front floor (8/8 ') are overlapped, the Z-shaped top is bent inwards to form two first cavities (9/9') with the top of the 'n' -shaped; extending back in the X direction to the end of the four laps, the bends gradually increasing, and the cavities (9/9') gradually increasing from the top of the "several" to the sides of the "several".
5. A reinforcing arrangement according to claim 3 or 4, wherein: on a YZ section, the mounting bracket (6/6') of the rear cross beam of the front seat is integrally L-shaped;
at the front end where the front floor middle section (7), the front floor middle section reinforcing longitudinal beam (4/4 '), the front row seat rear cross beam mounting bracket (6/6') and the front floor (8/8 ') are overlapped, an L-shaped vertical arm is attached to the outer surfaces of two sides of a' n '-shaped shape of the front floor middle section (7), the L-shaped vertical arm is attached to the upper surface of the front floor (8/8'), the corner of the 'L' -shaped shape is bent outwards, and two second cavities (10/10 ') are formed by the end of the' n '-shaped shape and the upper surface of the front floor (8/8'); extend to four lapped terminal ends backward along the X direction, the corner of L "type is buckled outward and is resumeed gradually until corner and" several "type laminating.
6. The reinforcing structure of claim 5, wherein: at the front end where the front floor middle section (7), the front floor middle section reinforcing longitudinal beam (4/4 '), the front-row seat rear cross beam mounting bracket (6/6') and the front floor (8/8 ') are overlapped, from inside to outside, 2 three-layer overlapping joints (11/11') in the Y direction are formed by the front floor middle section reinforcing longitudinal beam (4/4 '), the middle part of the' several 'shape of the front floor middle section (7) and the front-row seat rear cross beam mounting bracket (6/6').
7. The reinforcing structure of claim 5, wherein: at the rear end where the front floor center section (7), the front floor center section reinforcing longitudinal beam (4/4 '), the front seat rear cross beam mounting bracket (6/6 ') and the front floor (8/8 ') are overlapped, 2 four-layer overlapping joints (12/12 ') in the X direction are formed from the front seat rear cross beam mounting bracket (6/6 '), the end of the ' several ' shape of the front floor center section (7), the front floor (8/8 ') and the front floor center section reinforcing longitudinal beam (4/4 ') from top to bottom.
8. The reinforcing structure of claim 7, wherein: the front reinforcement (5/5 ') of the rear floor is Z-shaped, and forms two third cavities (13/13') with the middle part of the middle section (7) of the front floor in a shape of 'several'.
9. The reinforcing structure of claim 8, wherein: the lap joints are all welded.
10. The reinforcing structure of claim 1, wherein: the distance between the pair of front floor middle section reinforcing longitudinal beams (4/4') is 0; the pair of rear floor front reinforcements (5/5') has a spacing of 0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111432606.9A CN114132412B (en) | 2021-11-29 | 2021-11-29 | Increase additional strengthening of seat mounting point rigidity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111432606.9A CN114132412B (en) | 2021-11-29 | 2021-11-29 | Increase additional strengthening of seat mounting point rigidity |
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| Publication Number | Publication Date |
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| CN114132412A true CN114132412A (en) | 2022-03-04 |
| CN114132412B CN114132412B (en) | 2023-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111432606.9A Active CN114132412B (en) | 2021-11-29 | 2021-11-29 | Increase additional strengthening of seat mounting point rigidity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114537537A (en) * | 2022-03-09 | 2022-05-27 | 奇瑞汽车股份有限公司 | Automobile front floor beam assembly and preparation method thereof |
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| FR2859447A1 (en) * | 2003-09-09 | 2005-03-11 | Peugeot Citroen Automobiles Sa | Base for e.g. two door convertible sedan, has rail reinforcement piece that forms hollow body, and another reinforcement piece fixed to branch of side rail in lower transversal direction of base by forming another hollow body |
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