CN112373576A - Front floor assembly structure - Google Patents
Front floor assembly structure Download PDFInfo
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- CN112373576A CN112373576A CN202010242655.5A CN202010242655A CN112373576A CN 112373576 A CN112373576 A CN 112373576A CN 202010242655 A CN202010242655 A CN 202010242655A CN 112373576 A CN112373576 A CN 112373576A
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- floor
- front floor
- assembly
- cross beam
- fixed
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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
- B62D25/2054—Load carrying floors for commercial vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/005—Arrangement or mounting of seats in vehicles, e.g. dismountable auxiliary seats
- B60N2/015—Attaching seats directly to vehicle chassis
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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
- B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
- B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
- B60K2001/0438—Arrangement under the floor
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Aviation & Aerospace Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention discloses a front floor assembly structure which comprises a front floor body and a front floor frame arranged on the front floor body, wherein the front floor body comprises a central channel, the front floor frame comprises a front floor front cross beam, a front seat cross beam assembly, a rear seat cross beam assembly, two threshold inner plates, a channel rear longitudinal beam and two front floor longitudinal beams, the front floor front cross beam, the front seat cross beam assembly, the rear seat cross beam assembly and the threshold inner plates are transversely arranged, the channel rear longitudinal beams and the two front floor longitudinal beams are longitudinally arranged, the central channel is respectively fixed with the front seat cross beam assembly and the rear seat cross beam assembly, the left side and the right side of the front floor front cross beam are respectively fixed with the rear side of the front longitudinal beam in a two-layer mode, and the front seat cross beam assembly, the rear seat cross beam assembly and the. The front floor assembly provided by the invention has a simple structure, improves the structural strength of the vehicle body and the NVH performance of the whole vehicle, meets the requirements of safety regulations, solves the safety problems of protecting passengers and a battery pack in side collision, and solves the local high stress problem of the front floor.
Description
Technical Field
The invention relates to the technical field of automobile bodies, in particular to a front floor assembly structure.
Background
The structure of a front floor assembly of a conventional power vehicle type in the prior art is shown in fig. 1, because an exhaust pipe needs to be avoided, a central channel 2 is usually designed in the middle of a floor and penetrates from the position of a front cabin of an automobile to the position of a rear floor assembly, and a left central channel longitudinal beam 3, a right central channel longitudinal beam 3 and more than two floor cross beams are arranged on two sides of the central channel 2 and used for lateral support of the lower part of a front floor. When the front floor assembly structure is used for a PHEV (hybrid electric vehicle) type, the PHEV type needs to reserve the space of the high-voltage battery and cancel the longitudinal beams 3 of the central channel at two sides of the central channel because the high-voltage battery is arranged at the bottom of the front floor, so that the deformation of the vehicle body is uncontrollable when the side column is collided due to the insufficient rigidity and strength of the front floor assembly structure, and the intrusion amount of the high-voltage battery is large due to the downward deformation of the front floor when the front floor is extruded, so that the requirements of regulations are not met, and potential safety hazards exist.
Disclosure of Invention
The invention is completed for solving the defects in the prior art, and aims to provide a front floor assembly structure which is simple in structure, improves the structural strength of a vehicle body and the NVH performance of a whole vehicle, meets the requirements of safety regulations, solves the safety problems of protecting passengers and a battery pack in side collision and solves the local high stress problem of a front floor.
The invention relates to a front floor assembly structure, which comprises a front floor body and a front floor frame arranged on the front floor body, wherein the front floor body comprises a central channel longitudinally arranged in the center, the front floor frame comprises a front floor front cross beam, a front seat cross beam assembly, a rear seat cross beam assembly, a channel rear longitudinal beam and two front floor longitudinal beams, the front floor front cross beam, the front seat cross beam assembly and the rear seat cross beam assembly are sequentially and transversely arranged from front to back, the channel rear longitudinal beam and the two front floor longitudinal beams are longitudinally arranged, the central channel extends from a front cabin frame to the rear seat cross beam assembly, the front side and the rear side of the channel rear longitudinal beam are respectively fixed with the central channel and the rear floor front cross beam in a two-layer manner, the two front floor longitudinal beams are arranged on the left side and the right side of the central channel in parallel, the front end and the rear end of the front floor longitudinal beam are respectively fixed with the front floor front cross beam in a two-layer manner, the front, the central channel is fixed with the front seat beam assembly and the rear seat beam assembly in two layers at corresponding positions respectively, the left side and the right side of the front floor front beam are fixed with the rear side of the front crossbeam in two layers respectively, the left side and the right side of the front seat beam assembly and the left side and the right side of the rear seat beam assembly are fixed with the doorsill inner plate in two layers at corresponding positions respectively, and the front seat beam assembly and the rear seat beam assembly are fixed with the front floor longitudinal beam in two layers at corresponding positions respectively.
The front floor assembly structure of the invention can also be as follows:
the rear seat cross beam assembly and the channel rear longitudinal beam are respectively provided with an overlapping part at the fixing part of the central channel, and the rear seat cross beam assembly, the channel rear longitudinal beam and the central channel are fixed in a three-layer mode at the corresponding positions of the overlapping parts.
Front floor extension beams are symmetrically and longitudinally arranged on the inner sides of the front portions of the front floor front cross beams respectively, and the front side and the rear side of each front floor extension beam are fixed with the front girder and the front floor front cross beam in a two-layer mode respectively.
The middle part of preceding floor extension beam is provided with the portion of bending, the front portion of preceding floor extension beam by the inboard of preceding girder transversely extends to the portion of bending, the rear portion of preceding floor extension beam by the portion of bending vertically extends to the front side of preceding floor front beam.
Inner plate connecting pieces are symmetrically arranged on the outer sides of the front parts of the two front floor longitudinal beams respectively, and the front end of the doorsill inner plate is fixed with the inner plate connecting pieces in a two-layer mode.
The rear seat beam assembly comprises a left rear beam, a right rear beam and a beam connecting piece, the left side and the right side of the beam connecting piece are fixed with the left rear beam and the right rear beam in a two-layer mode respectively, the front side and the rear side of the beam connecting piece are fixed with the central channel and the front floor rear longitudinal beam in a two-layer mode respectively, the left side of the left rear beam and the right side of the right rear beam are fixed with the doorsill inner plate in a two-layer mode respectively, and the middle of the left rear beam and the middle of the right rear beam are fixed with the front floor longitudinal beam in a two-layer mode respectively.
The rear seat beam assembly is connected with the central channel, a beam reinforcing plate is arranged at a position corresponding to the connecting position of the rear seat beam assembly and the central channel, the front side of the beam reinforcing plate is fixed with the central channel, and the rear side of the beam reinforcing plate is fixed with the rear seat beam assembly.
The rear seat beam assembly is connected with the front floor longitudinal beam on the left side and the right side, and a second longitudinal beam extension piece is arranged at a corresponding position, integrally formed or fixed on the outer side of the front floor longitudinal beam and transversely extends along the rear seat beam assembly, and the second longitudinal beam extension piece and the rear seat beam assembly are fixed in a two-layer mode.
The front cross beam assembly comprises a left front cross beam and a right front cross beam, the left side and the right side of the left front cross beam are fixed with the doorsill inner plate and the central channel in a two-layer mode, and the left side and the right side of the right front cross beam are fixed with the central channel and the doorsill inner plate in a two-layer mode.
The front seat beam assembly is connected with the front floor longitudinal beam on the left side and the right side, and a first longitudinal beam extension piece is arranged at a corresponding position, integrally formed or fixed at the outer side of the bottom of the front floor longitudinal beam and transversely extends along the front seat beam assembly, and the top of the first longitudinal beam extension piece is fixed with the bottom of the front seat beam assembly in a two-layer mode.
The invention relates to a front floor assembly structure, which comprises a front floor body and a front floor frame arranged on the front floor body, wherein the front floor body comprises a central channel longitudinally arranged in the center, the front floor frame comprises a front floor front cross beam, a front seat cross beam assembly, a rear seat cross beam assembly, a channel rear longitudinal beam and two front floor longitudinal beams, the front floor front cross beam, the front seat cross beam assembly and the rear seat cross beam assembly are sequentially and transversely arranged from front to back, the channel rear longitudinal beam and the two front floor longitudinal beams are longitudinally arranged, the central channel extends from a front cabin frame to the rear seat cross beam assembly, the front side and the rear side of the channel rear longitudinal beam are respectively fixed with the central channel and the rear floor front cross beam in a two-layer manner, the two front floor longitudinal beams are arranged on the left side and the right side of the central channel in parallel, the front end and the rear end of the front floor longitudinal beam are respectively fixed with the front floor front cross beam in a two-layer manner, the front, the central channel is fixed with the front seat beam assembly and the rear seat beam assembly in two layers at corresponding positions respectively, the left side and the right side of the front floor front beam are fixed with the rear side of the front crossbeam in two layers respectively, the left side and the right side of the front seat beam assembly and the left side and the right side of the rear seat beam assembly are fixed with the doorsill inner plate in two layers at corresponding positions respectively, and the front seat beam assembly and the rear seat beam assembly are fixed with the front floor longitudinal beam in two layers at corresponding positions respectively. In this way, the high-voltage battery of the PHEV hybrid vehicle is arranged at the bottom of the vehicle body, the central channel longitudinal beams at two sides of the central channel are cancelled in order to avoid the high-voltage battery at the lower side, so that the resistance of the frame structure when the vehicle body is collided is weakened, in order to meet the requirements of safety regulations, the front floor front cross beam is added at the front side of the central channel, the front end and the rear end of the front floor longitudinal beam are respectively fixed with the front crossbeam and the rear floor front cross beam in a two-layer manner, the left side and the right side of the front floor front cross beam are respectively fixed with the rear side of the front crossbeam in a two-layer manner, the front floor front cross beam, the two front floor longitudinal beams and the rear floor front cross beam form a closed frame structure, the high-voltage battery of the PHEV hybrid vehicle is arranged at the bottom of the closed frame structure, namely is completely accommodated in the protection space of the, no matter which direction of the vehicle body is collided, the collision force can be transmitted to both sides from the collided part by the closed frame structure, and the absorption is weakened along with the increase of the transmission distance, so that the high-voltage battery is prevented from being extruded and damaged due to the collision of the vehicle body. The left side and the right side of the front seat beam assembly and the left side and the right side of the rear seat beam assembly are fixed with the inner doorsill plate in two layers at corresponding positions, the middle parts of the front seat beam assembly and the rear seat beam assembly are also fixed with the central channel in two layers, the arrangement of the front seat beam assembly and the rear seat beam assembly strengthens that the closed frame structure has stronger resistance to the collision of a vehicle body, when the force is transmitted to the connecting position of the front seat beam assembly or the rear seat beam assembly and the inner doorsill plate along the frame structure no matter any part of the vehicle body is collided, part of the load originally born by the inner doorsill plate can be shared and transmitted down along the front seat beam assembly or the rear seat beam assembly, namely, a force transmission path is added to the front seat beam assembly or the rear seat beam assembly, the force on each force transmission path is reduced, the probability of deformation of the beam on the frame structure when the vehicle body is collided is reduced, the high-voltage battery on the lower side of the frame structure and the passenger on the upper side are protected, the safety regulation requirements are met, and the structural strength of the vehicle body and the NVH performance of the whole vehicle are improved. The rear part of the central channel is provided with the channel rear longitudinal beam, the front side and the rear side of the channel rear longitudinal beam are respectively fixed with the central channel and the rear floor front cross beam in a two-layer manner, a new force transmission path is additionally arranged between the rear seat cross beam and the rear floor front cross beam, the force applied to the automobile body during collision can be transmitted to the position of the channel rear longitudinal beam in a further dispersed manner and transmitted and weakened, and the bending resistance of the frame structure during collision of the automobile body is further improved. Compared with the prior art, the front floor assembly structure has the advantages that: the structure is simple, the structural strength of the vehicle body and the NVH performance of the whole vehicle are improved, the safety regulation requirements are met, the safety problems of protecting passengers and a battery pack in side collision are solved, and the local high stress problem of the front floor is solved.
Drawings
Fig. 1 is a schematic structural diagram of a front floor assembly in the prior art.
Fig. 2 is a bottom view of a front floor assembly configuration of the present invention.
FIG. 3 is a schematic view of a rear seat cross member assembly of a front floor assembly structure of the present invention.
FIG. 4 is a schematic view of a front floor frame of a front floor assembly structure of the present invention.
FIG. 5 is a top view of a front floor assembly structure of the present invention.
FIG. 6 is a cross-sectional view taken along A-A of a front floor assembly of the present invention as shown in FIG. 5.
FIG. 7 is a cross-sectional view taken along B-B of a front floor assembly of the present invention as shown in FIG. 5.
Description of the figures
1 … front floor stringer 2 … center channel 3 … center channel stringer
4 … front seat Beam Assembly 5 … rear seat Beam Assembly 6 … Right front Beam
7 … left front beam 8 … sill inner panel 9 … right rear beam
10 … left rear beam 11 … beam connector 12 … channel rear longitudinal beam
13 … front floor body 14 … beam reinforcement 15 … first rail extension
16 … second rail extension 17 … front floor front cross member 18 … rear floor front cross member
19 … front floor extension beam 20 … front girder 21 … inner plate connecting piece
22 … battery nut plate 23 … bending part
Detailed Description
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "vertical", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
A front floor assembly structure of the present invention will be described in further detail with reference to fig. 2 to 7 of the drawings.
The invention relates to a front floor assembly structure, please refer to the relevant figures in fig. 2 to 7, which comprises a front floor body 13 and a front floor frame arranged on the front floor body 13, wherein the front floor body 13 comprises a central channel 2 longitudinally arranged at the center, the front floor frame comprises a front floor front cross beam 17, a front seat cross beam component 4 and a rear seat cross beam component 5 which are sequentially and transversely arranged from front to back, and a longitudinally arranged channel rear longitudinal beam 12 and two front floor longitudinal beams 1, the central channel 2 extends from a front cabin frame to the rear seat cross beam component 5, the front side and the back side of the channel rear longitudinal beam 12 are respectively fixed with the central channel 2 and the rear floor front cross beam 18 in a two-layer manner, the two front floor longitudinal beams 1 are arranged on the left side and the right side of the central channel 2 in a parallel manner, the front end and the back end of the front floor longitudinal beam 1 are respectively fixed with the front cross beam 20 and the rear floor front cross beam 18 in a two-layer manner, the front crossbeam 20 and the rear floor front beam 18 are fixed with the front and rear sides of the doorsill inner plate 8 in a two-layer mode respectively, the central passage 2 is fixed with the front seat beam assembly 4 and the rear seat beam assembly 5 in a two-layer mode in corresponding positions respectively, the left and right sides of the front floor front beam 17 are fixed with the rear side of the front crossbeam 20 in a two-layer mode respectively, the left and right sides of the front seat beam assembly 4 and the left and right sides of the rear seat beam assembly 5 are fixed with the doorsill inner plate 8 in corresponding positions respectively, and the front seat beam assembly 4 and the rear seat beam assembly 5 are fixed with the front floor longitudinal beam 1 in corresponding positions in a two-layer mode respectively. In this way, the high-voltage battery of the PHEV hybrid vehicle is arranged at the bottom of the vehicle body, the central channel longitudinal beams at two sides of the central channel 2 are cancelled in order to avoid the high-voltage battery at the lower side, so that the resistance of the frame structure is weakened when the vehicle body is collided, in order to meet the requirements of safety regulations, the front floor front cross beam 17 is added at the front side of the central channel 2, the front end and the rear end of the front floor longitudinal beam 1 are respectively fixed with the front crossbeam 20 and the rear floor front cross beam 18 in a two-layer manner, the left side and the right side of the front floor front cross beam 17 are respectively fixed with the rear side of the front crossbeam 20 in a two-layer manner, the front floor front cross beam 17, the two front floor longitudinal beams 1 and the rear floor front cross beam 18 form a closed frame structure, the high-voltage battery of the PHEV hybrid vehicle is arranged at the bottom of the closed, the protection space provides enough protection for the high-voltage battery, no matter which direction of the vehicle body is collided, collision force can be transmitted to two sides from the collided part by the closed frame structure, and the absorption is weakened along with the increase of the transmission distance, so that the high-voltage battery is prevented from being extruded and damaged due to the fact that the vehicle body is collided. The left and right sides of the front seat cross beam assembly 4 and the left and right sides of the rear seat cross beam assembly 5 are fixed to the rocker inner panel 8 at corresponding positions in a two-layer manner, the middle portions of the front seat cross beam assembly 4 and the rear seat cross beam assembly 5 are also fixed to the central channel 2 in a two-layer manner, the arrangement of the front seat cross beam assembly 4 and the rear seat cross beam assembly 5 strengthens the resistance of the closed frame structure to the collision of the vehicle body, and when a force is transmitted to the connecting position of the front seat cross beam assembly 4 or the rear seat cross beam assembly 5 and the rocker inner panel 8 along the frame structure regardless of the collision of any part of the vehicle body, a part of the load originally supposed to be borne by the rocker inner panel 8 can be transmitted down along the front seat cross beam assembly 4 or the rear seat cross beam assembly 5 and weakened, namely, the front seat beam assembly 4 or the rear seat beam assembly 5 is additionally provided with a force transmission path, so that the force on each force transmission path is reduced, the probability of deformation of a beam on the frame structure when the vehicle body is collided is reduced, the safety of a high-voltage battery on the lower side of the frame structure and the safety of passengers on the upper side are protected, the safety regulation requirements are met, and the structural strength of the vehicle body and the NVH performance of the whole vehicle are improved. In order to further increase the resistance of the frame structure, the rear channel longitudinal beam 12 is arranged at the rear part of the central channel 2, the front side and the rear side of the rear channel longitudinal beam 12 are respectively fixed with the central channel 2 and the rear floor front cross beam 18 in a two-layer manner, a new force transmission path is added between the rear seat cross beam and the rear floor front cross beam 18, the force applied to the vehicle body during collision can be transmitted to the position of the rear channel longitudinal beam 12 to be further dispersed, transmitted and weakened, and the bending resistance of the frame structure during the vehicle body collision is further increased. Compared with the prior art, the front floor assembly structure has the advantages that: the structure is simple, the structural strength of the vehicle body and the NVH performance of the whole vehicle are improved, the safety regulation requirements are met, the safety problems of protecting passengers and a battery pack in side collision are solved, and the local high stress problem of the front floor is solved.
Referring to fig. 2 to 7, a front floor assembly structure of the present invention may further include: the rear seat cross beam assembly 5 and the channel rear longitudinal beam 12 are respectively provided with an overlapping part at the fixing position of the central channel 2, and the rear seat cross beam assembly 5, the channel rear longitudinal beam 12 and the central channel 2 are fixed in a three-layer manner at the corresponding positions of the overlapping parts. Thus, the central channel 2, the channel rear longitudinal beam 12 and the rear seat cross beam assembly 5 form a cross structure, the three parts are fixedly connected in a three-layer mode at the overlapping portion to form a firm connection, one part is divided into three parts when force is transmitted to the overlapping portion, load on each path is greatly weakened, the load is accelerated and weakened in the transmission process, originally, only one path weakened force is shared by three paths and weakened at the same time, when the force of each shared transmission path is converged together, the force is greatly smaller than the force directly transmitted by one path, the rear portion of the front floor is powerfully supported by the channel rear longitudinal beam 12, and the problem of high stress of the rear portion of the front floor is solved.
Referring to fig. 2 to 7, a front floor assembly structure of the present invention may further include: front floor extension beams 19 are symmetrically and longitudinally arranged on the inner sides of the front portions of the front floor front cross beams 17 respectively, and the front side and the rear side of each front floor extension beam 19 are fixed with the front girders 20 and the front floor front cross beams 17 in a two-layer mode respectively. Thus, a cross-shaped structure is formed at the front side of the front floor side member 1, and when the force received when the vehicle body is collided is transmitted to the front side of the front floor side member 1, the force is transmitted continuously in three parts, namely, the force is transmitted to the front side member 20, the threshold inner plate 8 and the front floor side member 1 from the front floor front cross member 17, the threshold inner plate 8 and the front floor side member 1 from the front floor side member 20, or is transmitted to the threshold inner plate 8, the front floor front cross member 17 and the front side member 20 from the front floor side member 1, or is transmitted to the front floor side member 1, the front floor front cross member 17 and the front side member 20 from the threshold inner plate 8, so that the force fixed point passing through the cross-shaped structure is greatly weakened and is shared to other three plate type or beam type structural members, and the rigidity and the strength of the frame structure are increased, thereby protecting the passengers on the upper side of the frame structure and the high-voltage battery on the lower side of the frame structure from being safely collided with each other on the vehicle body. A bending part 23 is arranged in the middle of the front floor extension beam 19, the front part of the front floor extension beam 19 transversely extends from the inner side of the front girder 20 to the bending part 23, and the rear part of the front floor extension beam 19 longitudinally extends from the bending part 23 to the front side of the front floor front cross beam 17. Therefore, the front floor extension beam 19 transversely and inwardly extends to the bending part 23 from the inner side of the front girder 20, and after the front floor extension beam is bent and turned by the bending part 23, the front floor extension beam longitudinally extends to the front side of the front floor cross beam 17, so that the transmission distance of the force transmission path is increased, in the process of force transmission, the force is buffered and attenuated by a longer distance, the rigidity and the strength of the whole frame structure are increased when a vehicle body is collided, the original frame shape is maintained, and the high-voltage battery at the bottom of the frame structure is better protected.
Referring to fig. 2 to 7, a front floor assembly structure of the present invention may further include: the outer sides of the front parts of the two front floor longitudinal beams 1 are symmetrically provided with inner plate connecting pieces 21 respectively, and the front end of the doorsill inner plate 8 is fixed with the inner plate connecting pieces 21 in a two-layer mode. In this way, the inner plate connecting member 21 extends outward from the fixed position of the front girder 20 and the front floor side member 1, so that a certain distance is formed between the rocker inner plate 8 and the front floor side member 1, and it is further ensured that when the position of the rocker inner plate 8 is impacted, force is transmitted through a beam-like structural member having a connecting portion with the rocker inner plate 8, that is, the force is reduced through more force transmission paths, instead of directly impacting the front floor side member 1 when the rocker inner plate 8 is impacted and deformed, the impact force is transmitted along the extending direction of the front floor side member 1, so that the risk that the high-voltage battery pack is extruded due to deformation of the front floor side member 1 is reduced.
Referring to fig. 2 to 7, a front floor assembly structure of the present invention may further include: rear seat beam assembly 5 includes left rear frame member 10, right rear frame member 9 and crossbeam connecting piece 11, the left and right sides of crossbeam connecting piece 11 respectively with left rear frame member 10 with the two-layer formula of right rear frame member 9 is fixed, the front and back both sides of crossbeam connecting piece 11 respectively with central channel 2 with the two-layer formula of front floor back longeron is fixed, the left side of left rear frame member 10 with the right side of right rear frame member 9 respectively with 8 two-layer formulas of threshold inner panel are fixed, the middle part of left rear frame member 10 with the middle part of right rear frame member 9 is fixed with 1 two-layer formula of front floor longeron respectively. Like this, back seat beam assembly 5 has increased crossbeam connecting piece 11, crossbeam connecting piece 11 will a left side rear beam 10 with right side rear beam 9 links together and forms a run-through crossbeam, forms coherent power transmission route, and crossbeam connecting piece 11 around both sides respectively with central channel 2 with two laminar fixed of front floor back longeron form stable cross frame, will transmit through the power one minute of this intersect for three, and then strengthened the joint strength and the whole car rigidity of frame to satisfy the safety regulation requirement, high-voltage battery can receive more effective protection when the automobile body side receives the post to bump. A further preferred solution is that the beam connector 11 is arranged directly behind the central channel 2. Like this, because central channel 2 just in time vertically sets up in frame construction's central point department, like this, crossbeam connecting piece 11 also transversely sets up in frame construction's central point department, left side rear frame member 10 with right side rear frame member 9 set up respectively in crossbeam connecting piece 11's the left and right sides, and then increased whole frame construction's intensity, when making the automobile body front and back both sides bump, power can the equilibrium transmit to left side rear frame member 10 with on the right rear frame member 9, and then make whole frame construction more controllable when taking place deformation.
Referring to fig. 2 to 7, a front floor assembly structure of the present invention may further include: a cross beam reinforcing plate 14 is arranged at a position corresponding to the connection position of the rear seat cross beam assembly 5 and the central channel 2, the front side of the cross beam reinforcing plate 14 is fixed with the central channel 2, and the rear side of the cross beam reinforcing plate 14 is fixed with the rear seat cross beam assembly 5. In this way, the front side of the cross member reinforcing plate 14 is fixed to the center tunnel 2, the rear side of the cross member reinforcing plate 14 is fixed to the rear seat cross member assembly 5, and the cross member reinforcing plate 14 increases the thickness of the joint between the center tunnel 2 and the rear seat cross member assembly 5, that is, the cross sectional area where the center tunnel 2 and the rear seat cross member assembly 5 are connected increases, so that the load borne by a unit area is greatly reduced due to the increase of the cross sectional area for the same amount of force in the process of force transmission, and the rigidity and strength of the joint between the center tunnel 2 and the rear seat cross member assembly 5 are increased. A further preferred solution is to fix the rear side of the beam reinforcement plate 14 to the beam connector 11 in two layers. In this way, the beam connector 11 is located at the central position of the whole frame structure, the beam reinforcing plate 14 increases the thickness of the central channel 2 and the beam connector 11 at the joint, that is, the cross-sectional area where the central channel 2 and the beam connector 11 are connected is increased, so that in the process of force transmission, for the same force, the load born by a unit area is greatly reduced due to the increase of the cross-sectional area, and the rigidity and the strength of the central channel 2 and the beam connector 11 at the fixed position are increased.
Referring to fig. 2 to 7, a front floor assembly structure of the present invention may further include: the rear seat cross beam assembly 5 and the positions, corresponding to the connection positions of the front floor longitudinal beam 1, on the left side and the right side of the rear seat cross beam assembly are provided with second longitudinal beam extending pieces 16, the second longitudinal beam extending pieces 16 are integrally formed or fixed on the outer side of the front floor longitudinal beam 1 and transversely extend along the rear seat cross beam assembly 5, and the second longitudinal beam extending pieces 16 and the rear seat cross beam assembly 5 are fixed in a two-layer mode. In this way, the second side rail extension 16 is integrally formed or fixed on the outer side of the bottom of the front floor side rail 1 and extends transversely along the rear seat cross member assembly 5, the second side rail extension 16 and the rear seat cross member assembly 5 form a cavity structure, the top of the second side rail extension 16 and the bottom of the rear seat cross member assembly 5 are fixed in two layers, the second side rail extension 16 increases the fixing area of the front floor side rail 1 and the rear seat cross member assembly 5 at the fixing position of the front floor side rail 1 and the rear seat cross member assembly 5, and supports up the rear seat cross member assembly 5 at the bottom thereof to bear the weight of the rear seat cross member assembly 5 together with the center tunnel 2 and the threshold inner plate 8, because the center tunnel 2 and the threshold inner plate 8 are both plate-type structural members, and the rigidity and strength thereof are much smaller than beam-type structural members, the provision of the second rail extension 16 in turn reduces the load-bearing capacity of the centre tunnel 2 and the sill inner panel 8, and thus increases the rigidity and strength of the sill inner panel 8 and the centre tunnel 2. In a further preferred embodiment, the top of the second longitudinal beam extension 16 on the left side and the bottom of the left rear cross beam 10 are fixed in two layers at corresponding positions, and the bottom of the second longitudinal beam extension 16 on the right side and the bottom of the right rear cross beam 9 are fixed in two layers at corresponding positions. Therefore, the second longitudinal beam extending pieces 16 on the left side and the right side are symmetrically distributed on two sides of the central channel 2 and are fixed with the left rear cross beam 10 and the right rear cross beam 9 in a two-layer mode respectively, a force transmission path of the whole frame structure is optimized, when the front side and the rear side of a vehicle body collide, force can be transmitted on the left rear cross beam 10 and the right rear cross beam 9 in a balanced mode, and deformation controllability of the whole frame structure is improved.
Referring to fig. 2 to 7, a front floor assembly structure of the present invention may further include: the front cross beam assembly comprises a left front cross beam 7 and a right front cross beam 6, the left side and the right side of the left front cross beam 7 are fixed with the doorsill inner plate 8 and the central channel 2 in a two-layer mode respectively, and the left side and the right side of the right front cross beam 6 are fixed with the central channel 2 and the doorsill inner plate 8 in a two-layer mode respectively. Thus, the left front cross beam 7 is lapped between the central channel 2 and the left side inner sill plate 8, the right front cross beam 6 is lapped between the central channel 2 and the right side inner sill plate 8, namely the left front cross beam 7 forms a strong support between the central channel 2 and the left side inner sill plate 8, the right front cross beam 6 forms a strong support between the central channel 2 and the right side inner sill plate 8, the front seat cross beam assembly 4 and the rear seat cross beam assembly 5 are lapped with the two front floor longitudinal beams 1 at corresponding positions respectively, the front seat cross beam assembly 4, the rear seat cross beam assembly 5, the central channel 2, the front floor front cross beam 17 and the front floor longitudinal beams 1 form a closed structure in a shape like a Chinese character 'tian', so that the collision force of the vehicle body is greatly weakened when the force is converged together through a force transmission path of one-half and two-half parts, thereby increasing the strength and rigidity of the frame structure.
Referring to fig. 2 to 7, a front floor assembly structure of the present invention may further include: the front seat cross beam assembly 4 is provided with a first longitudinal beam extending piece 15 at a position corresponding to the connection position of the front floor longitudinal beam 1 on the left side and the right side, the first longitudinal beam extending piece 15 is integrally formed or fixed on the outer side of the bottom of the front floor longitudinal beam 1 and transversely extends along the front seat cross beam assembly 4, and the top of the first longitudinal beam extending piece 15 is fixed with the bottom of the front seat cross beam assembly 4 in a two-layer mode. Thus, the first side rail extension 15 is integrally formed or fixed on the bottom outer side of the front floor side rail 1 and extends transversely along the front seat cross beam assembly 4, the top of the first side rail extension 15 is fixed with the bottom of the front seat cross beam assembly 4 in a two-layer manner, the first side rail extension 15 increases the fixing area of the front floor side rail 1 and the front seat cross beam assembly 4 at the fixing position of the front floor side rail 1 and the front seat cross beam assembly 4 and supports the front floor side rail assembly 4 at the bottom of the front seat cross beam assembly 4, and bears the gravity of the front seat cross beam assembly 4 together with the center channel 2 and the threshold inner panel 8 because the center channel 2 and the threshold inner panel 8 are both plate type structural members and have much smaller rigidity and strength than beam type structural members, and the arrangement of the first side rail extension 15 reduces the load bearing of the center channel 2 and the threshold inner panel 8, thereby increasing the rigidity and strength of the rocker inner panel 8 and the centre channel 2. A further preferable technical solution is that the top of the first longitudinal beam extension 15 on the left side and the bottom of the left front cross beam 7 are fixed in two layers at corresponding positions, and the bottom of the first longitudinal beam extension 15 on the right side and the bottom of the right front cross beam 6 are fixed in two layers at corresponding positions. Therefore, the first longitudinal beam extending pieces 15 on the left side and the right side are symmetrically distributed on two sides of the central channel 2 and are fixed with the left front cross beam 7 and the right front cross beam 6 in a two-layer mode respectively, a force transmission path of the whole frame structure is optimized, when the front side and the rear side of a vehicle body collide, force can be transmitted on the left front cross beam 7 and the right front cross beam 6 in a balanced mode, and deformation controllability of the whole frame structure is improved.
Referring to fig. 2 to 7, a front floor frame structure of the present invention may further include: at least two battery nut plates 22 for installing a high-voltage battery are arranged on the two front floor longitudinal beams 1 at intervals respectively, and the battery nut plates 22 are fixed with the front floor longitudinal beams 1 at corresponding positions in a two-layer mode respectively. In this way, the battery nut plate 22 detachably fixes the high-voltage battery to the front floor longitudinal beams 1 at a plurality of points on each side in the front, rear, left and right directions, the front floor front cross beam 17 is located in front of the high-voltage battery, the two front floor longitudinal beams 1 are respectively located on the left and right sides of the high-voltage battery, the rear floor front cross beam 18 is located on the rear side of the high-voltage battery, and the whole closed frame structure protects the high-voltage battery from deformation caused by vehicle body collision in the front, rear, left and right directions.
The above description is only for the purpose of illustrating a few embodiments of the present invention, and should not be taken as limiting the scope of the present invention, in which equivalent changes, modifications, or scaling up or down, etc. made in accordance with the spirit of the present invention should be considered as falling within the scope of the present invention.
Claims (10)
1. A front floor assembly structure, characterized in that: the floor comprises a front floor body and a front floor frame arranged on the front floor body, wherein the front floor body comprises a central channel longitudinally arranged in the center, the front floor frame comprises a front floor front cross beam, a front seat cross beam assembly, a rear seat cross beam assembly, a longitudinally arranged channel rear longitudinal beam and two front floor longitudinal beams, the front floor front cross beam, the front seat cross beam assembly and the rear seat cross beam assembly are sequentially and transversely arranged from front to back, the central channel extends from a front cabin frame to the rear seat cross beam assembly, the front side and the rear side of the channel rear longitudinal beam are respectively fixed with the central channel and the rear floor front cross beam in a two-layer mode, the two front floor longitudinal beams are arranged on the left side and the right side of the central channel in parallel, the front end and the rear end of each front floor longitudinal beam are respectively fixed with the front cross beam and the rear floor front cross beam in a two-layer mode, the front floor front cross beam and the, the central channel is fixed with the front seat beam assembly and the rear seat beam assembly in two layers at corresponding positions respectively, the left side and the right side of the front floor front beam are fixed with the rear side of the front crossbeam in two layers respectively, the left side and the right side of the front seat beam assembly and the left side and the right side of the rear seat beam assembly are fixed with the doorsill inner plate in two layers at corresponding positions respectively, and the front seat beam assembly and the rear seat beam assembly are fixed with the front floor longitudinal beam in two layers at corresponding positions respectively.
2. A front floor assembly structure according to claim 1, wherein: the rear seat cross beam assembly and the channel rear longitudinal beam are respectively provided with an overlapping part at the fixing part of the central channel, and the rear seat cross beam assembly, the channel rear longitudinal beam and the central channel are fixed in a three-layer mode at the corresponding positions of the overlapping parts.
3. A front floor assembly structure according to claim 1, wherein: front floor extension beams are symmetrically and longitudinally arranged on the inner sides of the front portions of the front floor front cross beams respectively, and the front side and the rear side of each front floor extension beam are fixed with the front girder and the front floor front cross beam in a two-layer mode respectively.
4. A front floor assembly structure according to claim 3, wherein: the middle part of preceding floor extension beam is provided with the portion of bending, the front portion of preceding floor extension beam by the inboard of preceding girder transversely extends to the portion of bending, the rear portion of preceding floor extension beam by the portion of bending vertically extends to the front side of preceding floor front beam.
5. A front floor assembly structure according to claim 1, wherein: inner plate connecting pieces are symmetrically arranged on the outer sides of the front parts of the two front floor longitudinal beams respectively, and the front end of the doorsill inner plate is fixed with the inner plate connecting pieces in a two-layer mode.
6. A front floor assembly structure according to claim 1, wherein: the rear seat beam assembly comprises a left rear beam, a right rear beam and a beam connecting piece, the left side and the right side of the beam connecting piece are fixed with the left rear beam and the right rear beam in a two-layer mode respectively, the front side and the rear side of the beam connecting piece are fixed with the central channel and the front floor rear longitudinal beam in a two-layer mode respectively, the left side of the left rear beam and the right side of the right rear beam are fixed with the doorsill inner plate in a two-layer mode respectively, and the middle of the left rear beam and the middle of the right rear beam are fixed with the front floor longitudinal beam in a two-layer mode respectively.
7. A front floor assembly structure according to any one of claims 1-6, wherein: the rear seat beam assembly is connected with the central channel, a beam reinforcing plate is arranged at a position corresponding to the connecting position of the rear seat beam assembly and the central channel, the front side of the beam reinforcing plate is fixed with the central channel, and the rear side of the beam reinforcing plate is fixed with the rear seat beam assembly.
8. A front floor assembly structure according to any one of claims 1-6, wherein: the rear seat beam assembly is connected with the front floor longitudinal beam on the left side and the right side, and a second longitudinal beam extension piece is arranged at a corresponding position, integrally formed or fixed on the outer side of the front floor longitudinal beam and transversely extends along the rear seat beam assembly, and the second longitudinal beam extension piece and the rear seat beam assembly are fixed in a two-layer mode.
9. A front floor assembly structure according to any one of claims 1-6, wherein: the front cross beam assembly comprises a left front cross beam and a right front cross beam, the left side and the right side of the left front cross beam are fixed with the doorsill inner plate and the central channel in a two-layer mode, and the left side and the right side of the right front cross beam are fixed with the central channel and the doorsill inner plate in a two-layer mode.
10. A front floor assembly structure according to any one of claims 1-6, wherein: the front seat beam assembly is connected with the front floor longitudinal beam on the left side and the right side, and a first longitudinal beam extension piece is arranged at a corresponding position, integrally formed or fixed at the outer side of the bottom of the front floor longitudinal beam and transversely extends along the front seat beam assembly, and the top of the first longitudinal beam extension piece is fixed with the bottom of the front seat beam assembly in a two-layer mode.
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| CN202010242655.5A CN112373576A (en) | 2020-03-31 | 2020-03-31 | Front floor assembly structure |
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| CN202010242655.5A CN112373576A (en) | 2020-03-31 | 2020-03-31 | Front floor assembly structure |
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| CN112373576A true CN112373576A (en) | 2021-02-19 |
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Application publication date: 20210219 |