CN111434562A - Lower vehicle body frame structure - Google Patents
Lower vehicle body frame structure Download PDFInfo
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- CN111434562A CN111434562A CN201910027410.8A CN201910027410A CN111434562A CN 111434562 A CN111434562 A CN 111434562A CN 201910027410 A CN201910027410 A CN 201910027410A CN 111434562 A CN111434562 A CN 111434562A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/02—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members
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- 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
- B62D21/152—Front or rear frames
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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
- B62D25/2009—Floors or bottom sub-units in connection with other superstructure subunits
- B62D25/2018—Floors or bottom sub-units in connection with other superstructure subunits the subunits being front structures
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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
- B62D25/2009—Floors or bottom sub-units in connection with other superstructure subunits
- B62D25/2027—Floors or bottom sub-units in connection with other superstructure subunits the subunits being rear structures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D27/00—Connections between superstructure or understructure sub-units
- B62D27/02—Connections between superstructure or understructure sub-units rigid
- B62D27/023—Assembly of structural joints
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention provides a lower vehicle body frame structure which comprises a left front longitudinal beam, a right front longitudinal beam, a left door sill, a right door sill and a middle channel, and further comprises a front wall lower cross beam, a left front longitudinal beam joint and a right front longitudinal beam joint, wherein the front wall lower cross beam is positioned between the left door sill and the right door sill, and the middle part of the front wall lower cross beam is connected with the front end of the middle channel; the left front longitudinal beam joint and the right front longitudinal beam joint are upwards opened, the left front longitudinal beam joint is respectively connected with the rear end of the left front longitudinal beam, the front end of the left doorsill and the left end of the front wall lower cross beam, and the right front longitudinal beam joint is respectively connected with the rear end of the right front longitudinal beam, the front end of the right doorsill and the right end of the front wall lower cross beam. The invention provides a lower vehicle body frame structure, which can improve the collision performance and realize the light weight.
Description
Technical Field
The invention relates to the field of automobiles, in particular to a lower vehicle body frame structure.
Background
At present, gasoline-driven transmission automobiles and pure electric vehicles generally have a lower body frame serving as a whole vehicle framework, and most parts and assemblies of the automobiles are fixed through the lower body frame, such as a transmission system, a suspension, a steering system, a cab, a container and related operating mechanisms. The lower body frame serves to support and connect parts of the vehicle and to receive various loads from the inside and outside of the vehicle, and thus must have sufficient strength and rigidity to receive the load of the vehicle and the impact transmitted from the wheels.
With the improvement of safety awareness of people and the promotion of subjective and objective factors such as driving experience and environmental requirements, collision safety and lightweight design become important subjects of current vehicle body design, and are inevitable development trends in the future, and especially for pure electric vehicles, the lightweight requirement is higher. The vehicle body lower frame is reasonably arranged, and the most effective measure for realizing light weight is realized on the basis of meeting the characteristics of collision resistance and rigidity of the vehicle body.
The front and rear longitudinal beam joints of the lower vehicle body frame of the existing pure electric vehicle generally adopt anti-torque joints to promote a transmission path from a cabin longitudinal beam to a threshold, and a front wall root cross beam adopts a large extruded section structure to stabilize a support frame, but the general technical problem of the structure is that the light weight is not ideal.
Disclosure of Invention
The invention aims to solve the technical problem of providing a lower vehicle body frame structure aiming at the requirements of the lower vehicle body frame structure of the existing pure electric vehicle on the improvement of the collision performance and the weight control.
The lower vehicle body frame structure comprises a left front longitudinal beam, a right front longitudinal beam, a left doorsill, a right doorsill and a middle channel, and further comprises a front-wall lower cross beam, a left front longitudinal beam joint and a right front longitudinal beam joint, wherein the front-wall lower cross beam is positioned between the left doorsill and the right doorsill, and the middle part of the front-wall lower cross beam is connected with the front end of the middle channel; the left front longitudinal beam joint and the right front longitudinal beam joint are upwards opened, the left front longitudinal beam joint is respectively connected with the rear end of the left front longitudinal beam, the front end of the left doorsill and the left end of the front wall lower cross beam, and the right front longitudinal beam joint is respectively connected with the rear end of the right front longitudinal beam, the front end of the right doorsill and the right end of the front wall lower cross beam.
Furthermore, a quadrilateral rib-shaped structure is arranged inside the left front longitudinal beam joint and the right front longitudinal beam joint.
Furthermore, a rib-shaped structure shaped like a Chinese character 'mi' is arranged inside the front wall lower cross beam.
The left front longitudinal beam joint comprises a left front longitudinal beam upper joint and a left front longitudinal beam lower joint, and the left front longitudinal beam upper joint and the left front longitudinal beam lower joint are buckled at a connecting end close to the rear end of the left front longitudinal beam to form a closed beam body; the right front longitudinal beam connects and includes right front longitudinal beam top connection and right front longitudinal beam lower clutch, right front longitudinal beam top connection with right front longitudinal beam lower clutch is close the link lock of right front longitudinal beam rear end forms the closed roof beam body.
Furthermore, a rib structure shaped like a Chinese character 'mi' is arranged inside the left front longitudinal beam upper joint and the right front longitudinal beam upper joint, and a quadrilateral rib structure is arranged inside the left front longitudinal beam lower joint and the right front longitudinal beam lower joint.
Further, the height of the side wall of the left front longitudinal beam lower joint at the position connected with the left doorsill is larger than that of the left doorsill, and the height of the side wall of the right front longitudinal beam lower joint at the position connected with the right doorsill is larger than that of the right doorsill.
Further, the lower vehicle body frame structure further comprises a front wall upper cross beam, a front row seat front cross beam, a front row seat rear cross beam and a rear row seat front cross beam, the front wall upper cross beam is connected between the left front longitudinal beam upper joint and the right front longitudinal beam upper joint, the front row seat front cross beam, the front row seat rear cross beam and the rear row seat front cross beam are sequentially connected between the left threshold and the right threshold, and the middle channel is sequentially connected with the middle parts of the front row seat front cross beam, the front row seat rear cross beam and the rear row seat front cross beam.
Furthermore, the lower vehicle body frame structure further comprises a left rear longitudinal beam, a right rear longitudinal beam, a rear floor cross beam, a left rear longitudinal beam joint and a right rear longitudinal beam joint, wherein the rear floor cross beam is connected between the front end of the left rear longitudinal beam and the front end of the right rear longitudinal beam; the left rear longitudinal beam joint and the right rear longitudinal beam joint are opened upwards, the front end of the left rear longitudinal beam joint is respectively connected with the rear end of the left doorsill and the left end of the rear row of seat front cross beam, and the rear end of the left rear longitudinal beam joint is respectively connected with the front end of the left rear longitudinal beam and the left end of the rear floor cross beam; the front end of the right rear longitudinal beam joint is connected with the rear end of the right doorsill and the right end of the rear row seat front cross beam respectively, and the rear end of the right rear longitudinal beam joint is connected with the front end of the right rear longitudinal beam and the right end of the rear floor cross beam respectively.
Furthermore, crossed rib-shaped structures are arranged inside the left rear longitudinal beam joint and the right rear longitudinal beam joint.
Further, the lower vehicle body frame structure further comprises a rear wall cross beam, and the rear wall cross beam is connected between the rear end of the left rear longitudinal beam and the rear end of the right rear longitudinal beam.
The invention has the advantages that the front longitudinal beam is supported to absorb energy by resisting bending deformation force through the left front longitudinal beam joint and the right front longitudinal beam joint, the front wall is stabilized by the front wall lower cross beam, and the collision safety performance and the light weight are realized through three force transmission paths of the middle channel, the left doorsill and the right doorsill of the floor.
Drawings
Fig. 1 is a schematic structural view of a lower body frame structure according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a left front rail upper joint according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a left front rail lower joint according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a left front rail joint according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a cowl frame according to an embodiment of the present invention.
The reference numbers in the drawings of the specification are as follows:
1. a left front rail; 2. a right front rail; 3. a left threshold; 4. a right threshold; 5. a middle channel; 6. a front wall lower beam; 601. a fifth base plate; 602. a fifth side plate; 603. a fifth inner rib; 7. a left front rail joint; 701. an upper joint of the left front longitudinal beam; 7011. a first base plate; 7012. a first side plate; 7013. a first inner rib; 702. a left front longitudinal lower joint; 7021. a first connection end; 7022. a second connection end; 7023. a third connection end; 7024. a second base plate; 7025. a second side plate; 7026. a second inner rib; 8. a right front rail joint; 801. a right front longitudinal beam upper joint; 8011. a third base plate; 8012. a third side plate; 8013. a third inner rib; 802. a right front longitudinal beam lower joint; 8021. a fourth connection end; 8022. a fifth connection end; 8023. a sixth connection end; 8024. a fourth base plate; 8025. a fourth side plate; 8026. a fourth inner rib; 9. the front wall is provided with an upper beam; 10. a front seat front cross member; 11. a front seat rear cross member; 12. a rear row seat front cross beam; 13. a left rear stringer; 14. a right rear stringer; 15. a rear floor beam; 16. a left rear stringer joint; 1601. a sixth chassis base; 1602. a sixth side plate; 1603. a sixth inner rib; 17. a right rear stringer joint; 1701. a seventh base plate; 1702. a seventh side plate; 1703. a seventh inner rib; 18. and a rear wall beam.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 to 5, a lower body frame structure provided in an embodiment of the present invention includes a left front longitudinal beam 1, a right front longitudinal beam 2, a left side sill 3, a right side sill 4, and a center tunnel 5, and further includes a front wall lower cross beam 6, a left front longitudinal beam joint 7, and a right front longitudinal beam joint 8, where the front wall lower cross beam 6 is located between the left side sill 3 and the right side sill 4, and a middle portion of the front wall lower cross beam 6 is connected to a front end of the center tunnel 5; the left front longitudinal beam joint 7 and the right front longitudinal beam joint 8 are opened upwards, the left front longitudinal beam joint 7 is respectively connected with the rear end of the left front longitudinal beam 1, the front end of the left doorsill 3 and the left end of the front wall lower cross beam 6, and the right front longitudinal beam joint 8 is respectively connected with the rear end of the right front longitudinal beam 2, the front end of the right doorsill 4 and the right end of the front wall lower cross beam 6.
In the embodiment of the invention, the front wall intrusion amount can be reduced and the energy absorption of the front end longitudinal beam can be supported by the left front longitudinal beam joint 7 and the right front longitudinal beam joint 8 which are designed by the bending-resistant structure with the upward openings, and the weight reduction of the left front longitudinal beam joint 7 and the right front longitudinal beam joint 8 can be realized; simultaneously, the longitudinal structure of left front longitudinal beam 1, right front longitudinal beam 2, left threshold 3, right threshold 4 and centre channel 5 to and enclose the lower cross beam 6 before, the left front longitudinal beam connects 7 and the right front longitudinal beam and connects the lower automobile body frame structure that 8 lateral structures formed, enclose before 6 stable of lower cross beam before through, through three transmission paths of centre channel 5, left threshold 3 and right threshold 4 with the transmission of collision force from the front longitudinal beam to the floor, realize reliable and stable frontal collision structure.
2-4, in order to further optimize the transmission path of the collision force, the left front longitudinal beam joint 7 comprises a left front longitudinal beam upper joint 701 and a left front longitudinal beam lower joint 702, and the left front longitudinal beam upper joint 701 and the connecting end of the left front longitudinal beam lower joint 702 close to the rear end of the left front longitudinal beam 1 are buckled to form a closed beam body; the right front longitudinal beam joint 8 comprises a right front longitudinal beam upper joint 801 and a right front longitudinal beam lower joint 802, and the right front longitudinal beam upper joint 801 and the right front longitudinal beam lower joint 802 close to the connecting end of the rear end of the right front longitudinal beam 2 are buckled to form a closed beam body.
Specifically, as shown in fig. 2 to 4, the left front longitudinal beam lower joint 702 includes a first connecting end 7021, a second connecting end 7022 and a third connecting end 7023, the first connecting end 7021 is connected to the rear end of the left front longitudinal beam 1, the second connecting end 7022 is connected to the front end of the left rocker 3, and the third connecting end 7023 is connected to the left end of the front wall lower cross beam 6; the right front longitudinal beam lower joint 802 includes a fourth connecting end 8021, a fifth connecting end 8022 and a sixth connecting end 8023, the fifth connecting end 8022 is connected to the rear end of the right front longitudinal beam 2, the fifth connecting end 8022 is connected to the front end of the right side sill 4, and the sixth connecting end 8023 is connected to the right end of the front wall lower cross beam 6. The first connecting end 7021, the second connecting end 7022 and the third connecting end 7023 of the left front longitudinal beam lower joint 702 form a three-way joint structure which is connected with the left front longitudinal beam 1, the left doorsill 3 and the front wall lower cross beam 6 on the left side, on one hand, collision force transmitted by the left front longitudinal beam 1 is transmitted to the left doorsill 3 through the first connecting end 7021 via the second connecting end 7022, on the other hand, the third connecting end 7023 is connected with the front wall lower cross beam 6 to support the stability of the left front longitudinal beam joint 7, and the reliability of the whole lower vehicle body frame structure is ensured. The fourth connecting end 8021, the fifth connecting end 8022 and the sixth connecting end 8023 of the right front longitudinal beam lower joint 802 form a three-way joint structure on the right side for connecting the right front longitudinal beam 2, the right rocker 4 and the front wall lower cross beam 6, and the structure is symmetrical to the left side, and the function is the same as the left side, so that the details are not repeated.
As shown in fig. 2-4, in order to further improve the bending deformation resistance of the left front longitudinal beam joint 7 and the right front longitudinal beam joint 8 and support the front longitudinal beam to absorb energy, a quadrilateral rib-shaped structure is arranged inside the left front longitudinal beam joint 7 and the right front longitudinal beam joint 8, and a cross-shaped rib-shaped structure is arranged inside the front lower cross beam 6. The quadrilateral rib-shaped structure is beneficial to force conduction, the rib-shaped structure shaped like a Chinese character 'mi' is more beneficial to support, and force conduction and supporting effects at the arrangement position are respectively realized through the arrangement of the different rib-shaped structures.
As shown in fig. 2 to 4, in order to further improve the bending deformation resistance of the left front longitudinal beam joint 7 and the right front longitudinal beam joint 8 and support the front longitudinal beam to absorb energy, the left front longitudinal beam upper joint 701 includes a first bottom plate 7011, a first side plate 7012 extending downward from both sides of the first bottom plate 7011, and a first inner rib 7013 extending downward from the middle of the first bottom plate 7011, the left front longitudinal beam lower joint 702 includes a second bottom plate 7024, a second side plate 7025 extending upward from both sides of the second bottom plate 7024, and a second inner rib 7026 extending upward from the middle of the second bottom plate 7024, and the left front longitudinal beam upper joint 701 is fastened with the first connecting end 7021 to form a closed beam body; the right front longitudinal beam upper joint 801 comprises a third bottom plate 8011, a third side plate 8012 extending downwards from two sides of the third bottom plate 8011 and a third inner rib 8013 extending downwards from the middle of the third bottom plate 8011, the right front longitudinal beam lower joint 802 comprises a fourth bottom plate 8024, a fourth side plate 8025 extending upwards from two sides of the fourth bottom plate 8024 and a fourth inner rib 8026 extending upwards from the middle of the fourth bottom plate 8024, and the right front longitudinal beam upper joint 801 and the fourth connecting end 8021 are buckled to form a closed beam body; the front wall lower cross member 6 includes a fifth bottom plate 601, fifth side plates 602 extending upward from both sides of the fifth bottom plate 601, and fifth inner ribs 603 extending upward from the middle of the fifth bottom plate 601. The support of the front-end collision force is mainly realized by bending resistance of a Z-direction demolding structure in the X direction, and the left front longitudinal beam lower joint 702 and the right front longitudinal beam lower joint 802 form a beam-shaped structure with an upward opening by adopting a Z-direction upward demolding high-pressure vacuum casting structure, and bear the force transmission in the X direction of the frontal collision through the X-direction layout of the second inner rib 7026 and the fourth inner rib 8026. The left front longitudinal beam upper joint 701 and the right front longitudinal beam upper joint 801 adopt a Z-direction downward demolding design, and support and reinforce the joints through a first inner rib 7013 and a second inner rib 7026. The left front longitudinal beam upper joint 701 and the first connecting end 7021 are buckled to form a closed beam body to be butted with the left front longitudinal beam 1, and the right front longitudinal beam upper joint 801 and the fourth connecting end 8021 are buckled to form a closed beam body to be butted with the right front longitudinal beam 2. Simultaneously, enclose bottom end rail 6 before and adopt Z to the design of drawing a mould that makes progress, the middle part supports both ends, and the protection collides the root, through the inside muscle 603 overall arrangement of fifth in X to the collision invasion of protection front end, Y is to the stability that supports both sides and connect, guarantees the reliability of whole bending-resistant structure.
As shown in fig. 1 to 4, in order to further strengthen the support and the reinforcement of the left front longitudinal beam upper joint 701 and the right front longitudinal beam upper joint 801 and prevent the joints from turning up, a rib structure shaped like a Chinese character 'mi' is arranged inside the left front longitudinal beam upper joint 701 and the right front longitudinal beam upper joint 801, wherein a first inner rib 7013 inside the left front longitudinal beam upper joint 701 is the rib structure shaped like a Chinese character 'mi', and a third inner rib 8013 inside the right front longitudinal beam upper joint 801 is the rib structure shaped like a Chinese character 'mi', which is more beneficial to support. In order to further realize that the left front longitudinal beam lower joint 702 and the right front longitudinal beam lower joint 802 bear force transmission in the forward collision X direction and match the bending stability of the lower part, quadrilateral rib-shaped structures are arranged inside the left front longitudinal beam lower joint 702 and the right front longitudinal beam lower joint 802, wherein a second inner rib 7026 inside the left front longitudinal beam lower joint 702 is of the quadrilateral rib-shaped structure, a fourth inner rib 8026 inside the right front longitudinal beam lower joint 802 is of the quadrilateral rib-shaped structure, and the quadrilateral rib-shaped structure is favorable for force transmission. In order to further realize the protection of front end collision invasion, the inside of the front wall lower beam 6 is provided with a rib-shaped structure shaped like a Chinese character 'mi', the rib-shaped structure shaped like a Chinese character 'mi' positioned inside the front wall lower beam 6 is a fifth inner rib 603, and the rib-shaped structure shaped like a Chinese character 'mi' is more favorable for supporting.
As shown in fig. 1, in order to further enhance the stability of the connection between the left front side rail joint 7 and the left side sill 3, and between the right front side rail joint 8 and the right side sill 4, the height of the side wall of the left front side rail lower joint 702 at the connection with the left side sill 3 is greater than the height of the left side sill 3, and the height of the side wall of the right front side rail lower joint 802 at the connection with the right side sill 4 is greater than the height of the right side sill 4. Specifically, the height of the second side plate 7025 at the second connection end 7022 is greater than the height of the left rocker 3, the height of the fourth side plate 8025 at the fifth connection end 8022 is greater than the height of the left rocker 3, the wall height of the left rocker 3 is enveloped by the left front longitudinal beam joint 7, and the wall height of the right rocker 4 is enveloped by the right front longitudinal beam joint 8, so that the connection stability at the position can be improved.
As shown in fig. 1 and 5, in order to further optimize the transmission path of the lower body frame structure and the collision force, the lower body frame structure further includes a front wall upper beam 9, a front row seat front beam 10, a front row seat rear beam 11 and a rear row seat front beam 12, the front wall upper beam 9 is connected between the left front longitudinal beam upper joint 701 and the right front longitudinal beam upper joint 801, the front row seat front beam 10, the front row seat rear beam 11 and the rear row seat front beam 12 are sequentially connected between the left rocker 3 and the right rocker 4, and the middle channel 5 is sequentially connected with the middle parts of the front row seat front beam 10, the front row seat rear beam 11 and the rear row seat front beam 12. The front wall upper cross beam 9, the front wall lower cross beam 6, the left front longitudinal beam joint 7 and the right front longitudinal beam joint 8 jointly form a front wall frame. The structure which is formed by the structure and is staggered transversely and longitudinally is beneficial to improving the collision safety of the lower vehicle body frame; meanwhile, the front wall upper cross beam 9 can reduce the front wall intrusion amount in the X direction, and the left front longitudinal beam upper joint 701 and the right front longitudinal beam upper joint 801 are supported in the Y direction, so that the stability of the upper structure is improved.
As shown in fig. 1, in order to further optimize the transmission path of the collision force, the lower vehicle body frame structure further includes a left rear longitudinal beam 13, a right rear longitudinal beam 14, a rear floor cross beam 15, a left rear longitudinal beam joint 16, and a right rear longitudinal beam joint 17, wherein the rear floor cross beam 15 is connected between the front end of the left rear longitudinal beam 13 and the front end of the right rear longitudinal beam 14; the left rear longitudinal beam joint 16 and the right rear longitudinal beam joint 17 are opened upwards, the front end of the left rear longitudinal beam joint 16 is respectively connected with the rear end of the left doorsill 3 and the left end of the rear row seat front cross beam 12, and the rear end of the left rear longitudinal beam joint 16 is respectively connected with the front end of the left rear longitudinal beam 13 and the left end of the rear floor cross beam 15; the front end of the right rear longitudinal beam joint 17 is connected with the rear end of the right doorsill 4 and the right end of the rear row seat front cross beam 12, and the rear end of the right rear longitudinal beam joint 17 is connected with the front end of the right rear longitudinal beam 14 and the right end of the rear floor cross beam 15. The lower vehicle body frame structure further comprises a rear wall cross beam 18, and the rear wall cross beam 18 is connected between the rear end of the left rear longitudinal beam 13 and the rear end of the right rear longitudinal beam 14. A three-way joint structure connecting the rear end of the left rocker 3, the left end of the front cross member 12 of the rear seat and the front end of the left rear longitudinal beam 13 is formed on the left side by the left rear longitudinal beam joint 16, which is favorable for transmitting the force transmitted from the left rocker 3 to the rear through the left rear longitudinal beam joint 16. The structure and the function of the right rear longitudinal beam joint 17 are the same as those of the left side, and are not described again.
As shown in fig. 1, in order to further improve the bending resistance of the left rear side member joint 16 and the right rear side member joint 17, the left rear side member joint 16 includes a sixth bottom plate 1601, sixth side plates 1602 extending upward from both sides of the sixth bottom plate 1601, and sixth inner ribs 1603 extending upward from the middle of the sixth bottom plate 1601, and the right rear side member joint 17 includes a seventh bottom plate 1701, seventh side plates 1702 extending upward from both sides of the seventh bottom plate 1701, and seventh inner ribs 1703 extending upward from the middle of the seventh bottom plate 1701. The left rear longitudinal beam joint 16 and the right rear longitudinal beam joint 17 are in a Z-direction upward demolding high-pressure vacuum casting structure, so that the left rear longitudinal beam joint 16 and the right rear longitudinal beam joint 17 form a beam-shaped structure with an upward opening, and are supported by two rib-shaped structures.
In order to further support the left rear longitudinal beam joint 16 and the right rear longitudinal beam joint 17, a cross-shaped rib-shaped structure is arranged inside the left rear longitudinal beam joint 16 and the right rear longitudinal beam joint 17. The sixth inner rib 1603 located inside the left rear longitudinal beam joint 16 is of a crossed rib structure, the seventh inner rib 1703 located inside the right rear longitudinal beam joint 17 is of a crossed rib structure, and cross support at the joint can be achieved through the sixth inner rib 1603 and the seventh inner rib 1703.
According to the invention, aiming at the collision requirement of the pure electric vehicle, collision key joint parts are designed based on the requirement of lightweight improvement, the front key joint and the rear key joint are in a Z-direction demolding high-pressure vacuum casting structure form, and the collision front end is supported by the bending resistance to absorb energy and match with the safety protection of passengers. The problem of shortening collision paths due to the fact that the pure electric vehicle does not have a floor longitudinal beam structure is solved through the structure of the front wall upper cross beam 9 and the front wall lower cross beam 6, and the stability and the safety of the whole lower vehicle body are fully guaranteed. Meanwhile, by adopting the bending-resistant joint, the lightweight effect of the invention is remarkable, the bending-resistant structural design of the front longitudinal beam joint can realize unilateral weight reduction of about 4kg and both sides of 8kg compared with the prior art, the bending-resistant structural design of the rear longitudinal beam joint can realize unilateral weight reduction of about 3.5kg and both sides of 7kg compared with the prior art, the structure of the front wall upper cross beam 9 can reduce weight of about 2.5kg compared with the prior art, and the weight of the whole frame is reduced by about 17.5 kg.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (10)
1. A lower vehicle body frame structure comprises a left front longitudinal beam, a right front longitudinal beam, a left doorsill, a right doorsill and a middle channel, and is characterized by further comprising a front wall lower cross beam, a left front longitudinal beam joint and a right front longitudinal beam joint, wherein the front wall lower cross beam is positioned between the left doorsill and the right doorsill, and the middle part of the front wall lower cross beam is connected with the front end of the middle channel; the left front longitudinal beam joint and the right front longitudinal beam joint are upwards opened, the left front longitudinal beam joint is respectively connected with the rear end of the left front longitudinal beam, the front end of the left doorsill and the left end of the front wall lower cross beam, and the right front longitudinal beam joint is respectively connected with the rear end of the right front longitudinal beam, the front end of the right doorsill and the right end of the front wall lower cross beam.
2. A lower body frame structure according to claim 1, wherein a quadrangular rib-like structure is provided inside said left and right front side member joints.
3. The lower body frame structure according to claim 1, wherein a cross-shaped rib structure is provided inside the cowl bottom cross member.
4. The lower body frame structure according to claim 1, wherein the left front longitudinal beam joint comprises a left front longitudinal beam upper joint and a left front longitudinal beam lower joint, and the left front longitudinal beam upper joint and the left front longitudinal beam lower joint are fastened at a connecting end close to the rear end of the left front longitudinal beam to form a closed beam body; the right front longitudinal beam connects and includes right front longitudinal beam top connection and right front longitudinal beam lower clutch, right front longitudinal beam top connection with right front longitudinal beam lower clutch is close the link lock of right front longitudinal beam rear end forms the closed roof beam body.
5. A lower body frame structure according to claim 4, wherein a rib structure shaped like a Chinese character mi is provided inside the left front side member upper joint and the right front side member upper joint, and a rib structure shaped like a quadrangle is provided inside the left front side member lower joint and the right front side member lower joint.
6. The lower body frame structure according to claim 4, wherein the height of the side wall of the left front side member lower joint at the junction with the left side sill is larger than the height of the left side sill, and the height of the side wall of the right front side member lower joint at the junction with the right side sill is larger than the height of the right side sill.
7. The lower body frame structure according to any one of claims 2 to 6, further comprising a front wall upper cross member, a front seat front cross member, a front seat rear cross member, and a rear seat front cross member, wherein the front wall upper cross member is connected between the left front side member upper joint and the right front side member upper joint, the front seat front cross member, the front seat rear cross member, and the rear seat front cross member are sequentially connected between the left rocker and the right rocker, and the center tunnel is sequentially connected to the middle portions of the front seat front cross member, the front seat rear cross member, and the rear seat front cross member.
8. A lower body frame structure according to claim 1, further comprising a left rear longitudinal beam, a right rear longitudinal beam, a rear floor cross member, a left rear longitudinal beam joint, and a right rear longitudinal beam joint, the rear floor cross member being connected between a front end of the left rear longitudinal beam and a front end of the right rear longitudinal beam; the left rear longitudinal beam joint and the right rear longitudinal beam joint are opened upwards, the front end of the left rear longitudinal beam joint is respectively connected with the rear end of the left doorsill and the left end of the rear row of seat front cross beam, and the rear end of the left rear longitudinal beam joint is respectively connected with the front end of the left rear longitudinal beam and the left end of the rear floor cross beam; the front end of the right rear longitudinal beam joint is connected with the rear end of the right doorsill and the right end of the rear row seat front cross beam respectively, and the rear end of the right rear longitudinal beam joint is connected with the front end of the right rear longitudinal beam and the right end of the rear floor cross beam respectively.
9. A lower body frame structure according to claim 8, wherein a cross-shaped rib structure is provided inside the left and right rear side member joints.
10. The lower body frame structure according to any one of claims 8 to 9, further comprising a rear wall cross member connected between a rear end of the left rear side member and a rear end of the right rear side member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910027410.8A CN111434562A (en) | 2019-01-11 | 2019-01-11 | Lower vehicle body frame structure |
Applications Claiming Priority (1)
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100171340A1 (en) * | 2007-07-12 | 2010-07-08 | Honda Motor Co., Ltd. | Vehicle body frame structure |
| US8602454B1 (en) * | 2012-09-10 | 2013-12-10 | Ford Global Technologies, Llc | Crash load management in automotive vehicles using closed loop structures |
| CN106864595A (en) * | 2017-04-10 | 2017-06-20 | 上海蔚来汽车有限公司 | Connector, chassis assembly and electric automobile for vehicle frame |
| CN107351794A (en) * | 2017-08-17 | 2017-11-17 | 苏州紫荆清远新能源汽车技术有限公司 | A kind of front axle assy and automobile |
| CN207683615U (en) * | 2017-09-22 | 2018-08-03 | 广州汽车集团股份有限公司 | A kind of vehicle engine room frame |
| CN108609049A (en) * | 2018-06-13 | 2018-10-02 | 力帆实业(集团)股份有限公司 | A kind of electric vehicle lower body frame |
-
2019
- 2019-01-11 CN CN201910027410.8A patent/CN111434562A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100171340A1 (en) * | 2007-07-12 | 2010-07-08 | Honda Motor Co., Ltd. | Vehicle body frame structure |
| US8602454B1 (en) * | 2012-09-10 | 2013-12-10 | Ford Global Technologies, Llc | Crash load management in automotive vehicles using closed loop structures |
| CN106864595A (en) * | 2017-04-10 | 2017-06-20 | 上海蔚来汽车有限公司 | Connector, chassis assembly and electric automobile for vehicle frame |
| CN107351794A (en) * | 2017-08-17 | 2017-11-17 | 苏州紫荆清远新能源汽车技术有限公司 | A kind of front axle assy and automobile |
| CN207683615U (en) * | 2017-09-22 | 2018-08-03 | 广州汽车集团股份有限公司 | A kind of vehicle engine room frame |
| CN108609049A (en) * | 2018-06-13 | 2018-10-02 | 力帆实业(集团)股份有限公司 | A kind of electric vehicle lower body frame |
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Application publication date: 20200721 |
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| RJ01 | Rejection of invention patent application after publication |