CN113200007A - Vehicle body side impact reinforcing structure - Google Patents
Vehicle body side impact reinforcing structure Download PDFInfo
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- CN113200007A CN113200007A CN202110564205.2A CN202110564205A CN113200007A CN 113200007 A CN113200007 A CN 113200007A CN 202110564205 A CN202110564205 A CN 202110564205A CN 113200007 A CN113200007 A CN 113200007A
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- Prior art keywords
- plate
- threshold
- energy
- inner plate
- column
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/42—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects extending primarily along the sides of, or completely encircling, a vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/04—Door pillars ; windshield pillars
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/20—Floors or bottom sub-units
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention relates to the technical field of automobiles, and discloses a vehicle body side impact reinforcing structure which comprises a B column, a threshold beam, a seat cross beam and a seat mounting bracket which are sequentially connected; the sill beam comprises a sill outer plate and a sill inner plate connected with the sill outer plate; the lower end part of the B-pillar outer plate is connected with the threshold outer plate, and the lower end part of the B-pillar inner plate is positioned between the threshold outer plate and the threshold inner plate and is arranged in the threshold cavity; the seat mounting bracket is positioned on the seat beam and connected with the threshold inner plate; the first crumpling energy-absorbing piece and the second crumpling energy-absorbing piece are arranged in the doorsill cavity, the first crumpling energy-absorbing piece is arranged between the lower end portion of the B column inner plate and the doorsill outer plate, and the second crumpling energy-absorbing piece is arranged between the lower end portion of the B column inner plate and the doorsill inner plate. The structure can unload and transmit larger local impact energy under the side impact working condition, thereby improving the deformation of the doorsill and the B column and more fully protecting the safety of passengers during side impact.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a side impact reinforcing structure of an automobile body.
Background
The poor side collision resistance of the passenger car is always a problem troubling automobile manufacturers, because when the car has a side collision accident, drivers and passengers are easily injured or even die. With the development of economy in China, family cars have become popular in common families, and meanwhile, with the rapid development of the automobile industry and science and technology, the comprehensive protection of drivers and passengers is more and more emphasized. The safety performance concept of modern automobile structural design is as follows: when an automobile has a collision accident, the personal safety of drivers and passengers in the automobile needs to be protected to the maximum extent. The automobile driver and the passenger are near the automobile door and the B column, and the automobile door and the B column are easy to deform when suffering collision, so that the intrusion amount is too large, and the automobile driver and the passenger are very easy to be injured. Therefore, the design of the automobile structure is required to have a good side collision effect.
However, in the prior art, the improvement of the side collision performance of the automobile only locally strengthens the strength of a certain part of the automobile body, but does not consider the load transmission path and the energy absorption effect in the collision as a whole, so that the intrusion amount of a side collision area is difficult to be effectively reduced, the deformation of a doorsill and a B column is difficult to be improved, and the effect of protecting drivers and passengers is not ideal.
Disclosure of Invention
The purpose of the invention is: a side impact reinforcing structure for a vehicle body is provided, which can unload and transmit larger local impact energy under the side impact working condition, further improve the deformation of a doorsill and a B column, and more fully protect the safety of passengers under the side impact.
In order to achieve the above object, the present invention provides a vehicle body side impact reinforcement structure, which comprises a B-pillar, a rocker beam, a seat cross beam and a seat mounting bracket, which are connected in sequence;
the B column comprises a B column outer plate and a B column inner plate connected with the B column outer plate, the threshold beam comprises a threshold outer plate and a threshold inner plate connected with the threshold outer plate, and a threshold cavity is formed between the threshold outer plate and the threshold inner plate; the lower end part of the B-column outer plate is connected with the threshold outer plate, and the lower end part of the B-column inner plate is positioned between the threshold outer plate and the threshold inner plate and is arranged in the threshold cavity; the seat beam is connected with the inner threshold plate, and the seat mounting bracket is positioned on the seat beam and connected with the inner threshold plate;
the energy-absorbing structure is characterized in that a first crumpling energy-absorbing piece and a second crumpling energy-absorbing piece are arranged in the doorsill cavity, the first crumpling energy-absorbing piece is arranged between the lower end portion of the B column inner plate and the doorsill outer plate, and the second crumpling energy-absorbing piece is arranged between the lower end portion of the B column inner plate and the doorsill inner plate.
Further, the collision force of the vehicle body side collision working condition sequentially passes through the B column outer plate, the threshold outer plate, the first crumpling energy-absorbing part, the B column inner plate, the second crumpling energy-absorbing part and the threshold inner plate, and then is transmitted to the seat beam and the seat mounting bracket by the threshold inner plate.
Furthermore, the lower end part of the B-pillar inner plate penetrates through the threshold cavity from top to bottom and is respectively connected with the threshold outer plate and the threshold inner plate.
Furthermore, one end of the first crumpling energy-absorbing piece is welded with the outer doorsill plate, and the other end of the first crumpling energy-absorbing piece is abutted against the inner B-pillar plate or has a gap with the inner B-pillar plate; one end of the second crumpling energy-absorbing piece is welded with the B column inner plate, and the other end of the second crumpling energy-absorbing piece is abutted to the doorsill inner plate or has a gap with the doorsill inner plate.
Furthermore, the first crumple energy-absorbing piece and the second crumple energy-absorbing piece are both of U-shaped plate structures, and each U-shaped plate structure comprises a bottom plate and support legs oppositely arranged on two sides of the bottom plate; one end, far away from the bottom plate, of the supporting leg of the first crumpling energy-absorbing part is welded with the outer doorsill plate; and one end, far away from the bottom plate, of the supporting leg of the second crumpling energy-absorbing part is welded with the B-pillar inner plate.
Furthermore, a local reinforcing plate connected with the inner doorsill plate is arranged between the second crumpling energy-absorbing piece and the inner doorsill plate.
Furthermore, the seat mounting bracket is provided with an inclined strut bracket, one end of the inclined strut bracket is connected with the seat beam, and the other end of the inclined strut bracket is connected with the inner doorsill plate.
Compared with the prior art, the vehicle body side impact reinforcing structure provided by the technical scheme has the beneficial effects that: the B column outer plate, the doorsill outer plate and the first crumpling energy-absorbing piece form a first-stage crumpling energy-absorbing structure and transmit collision force to the B column inner plate; the B column inner plate and the second crumple energy absorption piece form a second-stage crumple energy absorption structure and transmit the collision force to the doorsill inner plate; the inner doorsill plate, the seat cross beam and the seat mounting bracket form a third-stage crumple energy absorption structure; when taking place the side impact, the energy-absorbing structure that contracts of bursting at all levels transmits the impact in proper order to can offset the impact through the deformation of each part with the unloading of bursting to contract, finally transmit the impact to central channel through the seat crossbeam, realized unloading and transmitting step by step to the energy of great local impact, and then improve the deformation of B post, promote the anti upset ability of threshold roof beam, effectively reduced the invasion injury to the passenger, be applied to electric vehicle, can also fully protect the integrality of battery package.
Drawings
FIG. 1 is a schematic structural view of a side impact reinforcement structure of a vehicle body according to an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 rotated through another angle;
FIG. 3 is a schematic structural view of a first stage crush energy absorbing structure according to an embodiment of the invention;
FIG. 4 is a schematic structural view of a second stage crush energy-absorbing structure according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of a third stage crush energy-absorbing structure of an embodiment of the invention;
FIG. 6 is a schematic structural view of a partial reinforcing plate according to an embodiment of the present invention;
fig. 7 is a schematic structural view of a sprag bracket according to an embodiment of the present invention.
The energy-saving and energy-saving seat comprises a seat beam 1, a seat mounting bracket 2, a column 3-B outer plate, a column 4-B inner plate, a threshold outer plate 5, a threshold inner plate 6, a threshold cavity 7, a first crumple energy-absorbing part 8, a second crumple energy-absorbing part 9, a local reinforcing plate 10 and a diagonal bracing bracket 11.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the terms "central", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., used herein are used in the orientation or positional relationship indicated in the drawings, which are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 5, an embodiment of the present invention provides a vehicle body side impact reinforcement structure, which includes a B-pillar, a rocker beam, a seat cross member 1, and a seat mounting bracket 2, which are connected in this order; the B-pillar comprises a B-pillar outer plate 3 and a B-pillar inner plate 4 connected with the B-pillar outer plate 3, the threshold beam comprises a threshold outer plate 5 and a threshold inner plate 6 connected with the threshold outer plate 5, and a threshold cavity 7 is formed between the threshold outer plate 5 and the threshold inner plate 6; the lower end part of the B-pillar outer plate 3 is connected with the threshold outer plate 5, and the lower end part of the B-pillar inner plate 4 is positioned between the threshold outer plate 5 and the threshold inner plate 6 and is arranged in the threshold cavity 7; the seat beam 1 is connected with the threshold inner plate 6, and the seat mounting bracket 2 is positioned on the seat beam 1 and connected with the threshold inner plate 6; a first crumpling energy-absorbing piece 8 and a second crumpling energy-absorbing piece 9 are arranged in the doorsill cavity 7, the first crumpling energy-absorbing piece 8 is arranged between the lower end part of the B-pillar inner plate 4 and the doorsill outer plate 5, and the second crumpling energy-absorbing piece 9 is arranged between the lower end part of the B-pillar inner plate 4 and the doorsill inner plate 6.
Based on the above scheme, please continue to refer to fig. 1 to 5, the B-pillar outer panel 3, the rocker outer panel 5 and the first crumple energy-absorbing piece 8 form a first-stage crumple energy-absorbing structure, and transmit the impact force to the B-pillar inner panel 4; the B column inner plate 4 and the second crumple energy absorption piece 9 form a second-stage crumple energy absorption structure, and the collision force is transmitted to the doorsill inner plate 6; the inner doorsill plate 6, the seat cross beam 1 and the seat mounting bracket 2 form a third-stage crumple energy absorption structure; when taking place the side impact, the energy-absorbing structure that contracts of bursting at all levels transmits the impact in proper order to can offset the impact through the deformation of each part with the unloading of bursting to contract, finally transmit the impact to central channel through seat crossbeam 1, realized unloading and transmitting step by step to the energy of great local impact, and then improve the deformation of B post, promote the anti upset ability of threshold roof beam, effectively reduced the invasion injury to the passenger, this embodiment is applied to electric vehicle, can also fully protect the integrality of battery package.
Specifically, as shown in fig. 1 to 5, the collision force of the vehicle body side collision working condition sequentially passes through the B-pillar outer plate 3, the rocker outer plate 5, the first crumple energy-absorbing member 8, the B-pillar inner plate 4, the second crumple energy-absorbing member 9, and the rocker inner plate 6, then is transmitted to the seat cross beam 1 and the seat mounting bracket 2 by the rocker inner plate 6, and finally is transmitted to the central channel by the seat cross beam 1; the collision energy is unloaded through the three crumpling energy absorption structures, the integral rigidity performance of the vehicle body is considered, the stability of the side collision key parts is improved, and the consistency of simulation analysis and test is realized.
As shown in fig. 1 to 6, the lower end of the B-pillar inner panel 4 penetrates through the threshold cavity 7 from top to bottom and is connected to the threshold outer panel 5 and the threshold inner panel 6, respectively, so as to meet the rigidity requirement of the entire vehicle. Specifically, the lower end portion of the B-pillar inner panel 4 is welded to the upper and lower edges of the rocker outer panel 5 and the rocker inner panel 6, respectively.
In the embodiment, as shown in fig. 1 to 6, one end of the first crumpling energy-absorbing piece 8 is welded with the outer sill plate 5, and the other end of the first crumpling energy-absorbing piece 8 is abutted to the inner B-pillar plate 4 or has a gap with the inner B-pillar plate 4, so that 3 layers of welding connection are formed among the outer B-pillar plate 3, the outer sill plate 5 and the first crumpling energy-absorbing piece 8, and the first crumpling energy-absorbing piece 8 transmits force to the inner B-pillar plate 4 while crumpling energy absorption occurs; one end of the second collapse energy-absorbing piece 9 is welded with the B-pillar inner plate 4, the other end of the second collapse energy-absorbing piece 9 is abutted to the threshold inner plate 6 or has a gap with the threshold inner plate 6, and the second collapse energy-absorbing piece 9 transmits force to the threshold inner plate 6 when collapse energy absorption occurs. The two crumple energy-absorbing pieces are arranged, so that the requirements of a collision force transmission path and rigidity performance can be met.
As shown in fig. 1 to 6, the first crumple energy absorbing member 8 and the second crumple energy absorbing member 9 are both U-shaped plate structures, and each U-shaped plate structure includes a bottom plate and legs oppositely disposed on two sides of the bottom plate; one end of the supporting leg of the first crumpling energy-absorbing piece 8, which is far away from the bottom plate, is welded with the threshold outer plate 5; and one end of the supporting leg of the second crumpling energy-absorbing piece 9, which is far away from the bottom plate, is welded with the B-pillar inner plate 4. This way the first and second energy-collapsing elements 8, 9 are arranged in the same direction instead of back-to-back.
Further, as shown in fig. 6, a local reinforcement panel 10 connected to the rocker inner panel 6 is provided between the second crush absorber 9 and the rocker inner panel 6. The increase of the local reinforcing plate 10 at the impact position of the rocker inner panel 6 can reduce the thickness of the rocker, and only local reinforcement is performed. The two U-shaped plate structures are arranged in the same direction, so that the local reinforcing plate 10 is not welded with the second crumpling energy-absorbing part 9, the local reinforcing plate 10, the doorsill inner plate 6 and the seat mounting bracket 2 are welded in 3 layers, if the two crumpling energy-absorbing parts are arranged in a back-to-back mode, the second crumpling energy-absorbing part 9 needs to be welded with the local reinforcing plate 10, 4 layers of welding can be generated, and the welding requirements can not be met.
As shown in fig. 7, a bracing bracket 11 is provided on the seat mounting bracket 2, one end of the bracing bracket 11 is connected to the seat cross member 1, and the other end of the bracing bracket 11 is connected to the rocker inner panel 6. The inclined strut bracket 11 is used as an element of a third-level collapse energy absorption structure, supports the inner doorsill plate 6, transmits impact force to the seat cross beam 1 and can collapse and absorb energy.
In summary, the embodiment of the invention provides a vehicle body side impact reinforcement structure, a three-stage crumple energy absorption structure is formed through the structure and arrangement of all parts, impact energy is unloaded, meanwhile, energy is transmitted to a seat cross beam 1, a central channel and the like, and the energy is unloaded step by step; when the unloading energy is transmitted, the threshold beam is anti-inversion, the bottom of the B column is reasonable in deformation, the invasion injury to passengers is effectively reduced, the stability of key parts due to side collision (including side column collision and side body collision) is improved, the consistency of simulation analysis and test is realized, and the safety of the passengers during the side collision is protected more fully.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (7)
1. A vehicle body side collision reinforcing structure is characterized by comprising a B column, a threshold beam, a seat cross beam and a seat mounting bracket which are sequentially connected;
the B column comprises a B column outer plate and a B column inner plate connected with the B column outer plate, the threshold beam comprises a threshold outer plate and a threshold inner plate connected with the threshold outer plate, and a threshold cavity is formed between the threshold outer plate and the threshold inner plate; the lower end part of the B-column outer plate is connected with the threshold outer plate, and the lower end part of the B-column inner plate is positioned between the threshold outer plate and the threshold inner plate and is arranged in the threshold cavity; the seat beam is connected with the inner threshold plate, and the seat mounting bracket is positioned on the seat beam and connected with the inner threshold plate;
the energy-absorbing structure is characterized in that a first crumpling energy-absorbing piece and a second crumpling energy-absorbing piece are arranged in the doorsill cavity, the first crumpling energy-absorbing piece is arranged between the lower end portion of the B column inner plate and the doorsill outer plate, and the second crumpling energy-absorbing piece is arranged between the lower end portion of the B column inner plate and the doorsill inner plate.
2. The vehicle body side impact reinforcement structure according to claim 1, wherein the collision force of the vehicle body side impact working condition is transmitted to the seat cross beam and the seat mounting bracket by the rocker inner plate after passing through the B-pillar outer plate, the rocker outer plate, the first crumple energy absorbing member, the B-pillar inner plate, the second crumple energy absorbing member and the rocker inner plate in sequence.
3. The side impact reinforcement structure for the vehicle body according to claim 1, wherein the lower end portion of the B-pillar inner panel penetrates through the rocker cavity from top to bottom and is connected to the rocker outer panel and the rocker inner panel, respectively.
4. The vehicle body side impact reinforcement structure according to claim 1, wherein one end of the first crumple energy-absorbing member is welded to the rocker outer panel, and the other end of the first crumple energy-absorbing member abuts against the B-pillar inner panel or has a gap with the B-pillar inner panel; one end of the second crumpling energy-absorbing piece is welded with the B column inner plate, and the other end of the second crumpling energy-absorbing piece is abutted to the doorsill inner plate or has a gap with the doorsill inner plate.
5. The vehicle body side impact reinforcement structure according to claim 4, wherein the first crumple energy-absorbing member and the second crumple energy-absorbing member are both U-shaped plate structures, and each U-shaped plate structure comprises a bottom plate and support legs oppositely arranged on two sides of the bottom plate; one end, far away from the bottom plate, of the supporting leg of the first crumpling energy-absorbing part is welded with the outer doorsill plate; and one end, far away from the bottom plate, of the supporting leg of the second crumpling energy-absorbing part is welded with the B-pillar inner plate.
6. The vehicle body side impact reinforcement structure according to claim 1, wherein a local reinforcement plate connected to the rocker inner plate is provided between the second crush energy absorber and the rocker inner plate.
7. The vehicle body side impact reinforcement structure according to claim 1, wherein a bracing bracket is provided on the seat mounting bracket, one end of the bracing bracket is connected to the seat cross member, and the other end of the bracing bracket is connected to the rocker inner panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110564205.2A CN113200007A (en) | 2021-05-24 | 2021-05-24 | Vehicle body side impact reinforcing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110564205.2A CN113200007A (en) | 2021-05-24 | 2021-05-24 | Vehicle body side impact reinforcing structure |
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| Publication Number | Publication Date |
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| CN113200007A true CN113200007A (en) | 2021-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110564205.2A Pending CN113200007A (en) | 2021-05-24 | 2021-05-24 | Vehicle body side impact reinforcing structure |
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| CN (1) | CN113200007A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113771959A (en) * | 2021-09-24 | 2021-12-10 | 浙江零跑科技股份有限公司 | New energy automobile strengthens threshold |
| CN114313015A (en) * | 2021-12-15 | 2022-04-12 | 东风汽车集团股份有限公司 | Side collision additional strengthening and vehicle |
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| CN114313015A (en) * | 2021-12-15 | 2022-04-12 | 东风汽车集团股份有限公司 | Side collision additional strengthening and vehicle |
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Application publication date: 20210803 |
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