CN212685730U

CN212685730U - Automobile B-pillar force transmission assembly

Info

Publication number: CN212685730U
Application number: CN202021429456.7U
Authority: CN
Inventors: 李直腾; 唐博威; 梁哲; 韦城
Original assignee: SAIC GM Wuling Automobile Co Ltd
Current assignee: SAIC GM Wuling Automobile Co Ltd
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2021-03-12
Anticipated expiration: 2030-07-20

Abstract

The utility model discloses a car B post passes power subassembly, including B post inner panel, threshold inner panel and seat installation crossbeam and preceding floor body, threshold inner panel and threshold planking enclose to establish and form the cavity, the lower extreme of B post inner panel the threshold planking with three laminar fixed threshold inner panel, the top of threshold inner panel is in B post inner panel corresponds position department integrated into one piece or is fixed with the bellying, the left side of bellying with the threshold planking with three laminar fixed B post inner panel, the top and the right side of bellying respectively with the corresponding position two-layer formula of seat installation crossbeam is fixed. The utility model discloses a car B post passes power subassembly simple structure, has hanged down whole car cost, has reduced the invasion amount of side impact, promotes the side and bumps the security performance, has promoted bending stiffness and crooked mode, has promoted the NVH performance.

Description

Automobile B-pillar force transmission assembly

Technical Field

The utility model relates to an automobile body technical field especially relates to an automobile B post passes power subassembly.

Background

As shown in fig. 1, the automobile threshold inner plate in the prior art extends from an a pillar to a C pillar, the longitudinal section of the threshold inner plate 2 at the joint of the B pillar inner plate 1 is uniform, and no other characteristics exist in a B pillar area; the seat mounting cross member 3 is directly attached to the upper portion and the side surface of the rocker inner panel 2, and the top horizontal surface of the rocker inner panel 2 is substantially flush with the top horizontal surface of the seat mounting cross member 3, and this structure has the following problems: the threshold inner panel 2 is easily turned over during side collision, resulting in an increase in the amount of intrusion; if the horizontal surface of the front floor body 4 needs to be lifted, the side surface of the inner sill plate 2 cannot be provided with a mounting point for a lower safety belt.

Disclosure of Invention

The utility model relates to a solve not enough among the prior art and accomplish, the utility model aims at providing a simple structure, reduced whole car cost, reduced the side impact the invasion volume, promote the side and bump the security performance, promoted bending stiffness and crooked mode, promoted a car B post biography power subassembly of NVH performance.

The utility model discloses a car B post passes power subassembly, including B post inner panel, threshold inner panel and seat installation crossbeam and preceding floor body, the inboard of threshold planking is fixed in to two-layer formula of threshold inner panel, the threshold inner panel with the threshold planking is enclosed and is established the formation cavity, the lower extreme of B post inner panel peg graft in the threshold inner panel with between the threshold planking, the lower extreme of B post inner panel the threshold planking with three layers of threshold inner panel are fixed, the top of threshold inner panel is in B post inner panel corresponds position department integrated into one piece or is fixed with the bellying, the left side of bellying with the threshold planking with three layers of B post inner panel are fixed, the top and the right side of bellying respectively with two layers of corresponding position of seat installation crossbeam are fixed, the bellying with the threshold planking is enclosed and is established the formation cavity, the seat installation crossbeam the tip with preceding floor body all is in the inboard of threshold inner panel with the threshold inner panel with The two-layer type is fixed, and the bottom of the seat installation beam is fixed with the front floor body in a two-layer type.

The utility model discloses a car B post passes power subassembly can also be:

the top of the seat mounting beam is provided with a seat mounting point, and the front feet at the outer side of the first row of seats are detachably fixed with the seat mounting beam through the seat mounting point.

And the front side and the rear side of the seat mounting beam are respectively provided with a second flanging, and the seat mounting beam is fixed with the front floor body in a two-layer manner through the second flanging.

The seat mounting cross beam extends and is fixed with a cross beam extension section towards one side of the doorsill inner plate in an integrated forming mode, and the cross beam extension section extends to the outer side of the top of the protruding portion from the seat mounting cross beam.

The front side and the rear side of the beam extension section are equally divided into two sides, namely, the front floor body and the doorsill inner plate are obliquely extended to form an inclined strut surface, the front part of the inclined strut surface is integrally formed or fixedly connected with the beam extension section, the rear part of the inclined strut surface is fixed with the two layers of the doorsill inner plate, and the bottom of the inclined strut surface is fixed with the two layers of the front floor body.

The rear side of the inclined strut surface is provided with a first flanging, and the seat mounting cross beam is fixed with the inner plate of the threshold in a two-layer mode through the first flanging.

The rear part of the vertical surface of the inner doorsill plate at the corresponding position where the seat mounting cross beam is fixed is provided with a lower safety belt mounting point, and the lower part of the pre-tightening safety belt is detachably fixed with the inner doorsill plate through the lower safety belt mounting point.

The top plane of the threshold inner plate is provided with at least one wiring harness installation point, and the threshold main wiring harness is detachably fixed with the threshold inner plate through the wiring harness installation point.

And a third flanging is arranged on the upper side of the threshold inner plate, the third flanging is fixed with the B column inner plate and the threshold outer plate in a three-layer manner at the overlapping corresponding position of the three parts, and the third flanging and the threshold outer plate are fixed in a two-layer manner at the overlapping corresponding position of the three parts.

The utility model discloses a car B post passes power subassembly, including B post inner panel, threshold inner panel and seat installation crossbeam and preceding floor body, the inboard of threshold planking is fixed in to two-layer formula of threshold inner panel, the threshold inner panel with the threshold planking is enclosed and is established the formation cavity, the lower extreme of B post inner panel peg graft in the threshold inner panel with between the threshold planking, the lower extreme of B post inner panel the threshold planking with three layers of threshold inner panel are fixed, the top of threshold inner panel is in B post inner panel corresponds position department integrated into one piece or is fixed with the bellying, the left side of bellying with the threshold planking with three layers of B post inner panel are fixed, the top and the right side of bellying respectively with two layers of corresponding position of seat installation crossbeam are fixed, the bellying with the threshold planking is enclosed and is established the formation cavity, the seat installation crossbeam the tip with preceding floor body all is in the inboard of threshold inner panel with the threshold inner panel with The two-layer type is fixed, and the bottom of the seat installation beam is fixed with the front floor body in a two-layer type. Thus, the inner threshold plate is fixed on the inner side of the outer threshold plate in a two-layer manner, the inner threshold plate and the outer threshold plate are surrounded to form a cavity, the inner threshold plate and the outer threshold plate form a cavity anti-torsion structure, the lower end of the B-pillar inner plate, the outer threshold plate and the inner threshold plate are fixed in a three-layer manner, the lower end of the B-pillar inner plate is inserted between the inner threshold plate and the outer threshold plate, the bulge part is integrally formed or fixed on the inner threshold plate at the corresponding connecting position of the inner threshold plate and the B-pillar inner plate, namely, the stress area between the inner threshold plate and the outer threshold plate, namely, the stress area of the closed cavity structure is increased, and further, under the condition of equal impact force, the load born by the unit area of the inner threshold plate is reduced, and the rigidity and the strength of the inner threshold plate are, when the automobile is collided, the intrusion amount of side collision is reduced, the side collision safety performance is improved, the bending rigidity and the bending mode of the inner plate of the doorsill are further improved, and the NVH performance of the automobile is improved. The end part of the seat mounting beam and the front floor body are fixed with the inner side of the doorsill inner plate in a two-layer mode, the bottom of the seat mounting beam is fixed with the front floor body in a two-layer mode, so that the seat mounting beam is fixed on the doorsill inner plate in a two-layer mode, the front floor body is fixed with the doorsill inner plate in a two-layer mode at the bottom of the seat mounting beam, the seat mounting beam and the front floor body simultaneously disperse the impact force received by the doorsill inner plate, the impact force is dispersedly transmitted to other positions of the front floor body through the front floor body and is transmitted to the other end of the seat mounting beam through the seat mounting beam, and thus the received impact force is dispersed and reduced, and the seat mounting beam and the front floor body play a supporting role at the fixed corresponding position of the doorsill inner plate and the B column inner plate, and then reduced the invasion volume of threshold inner panel to the inside of automobile when the side impact takes place for the automobile, and then promoted the side impact security performance. The utility model discloses a car B post passes power subassembly, advantage for prior art is: the structure is simple, the cost of the whole vehicle is reduced, the intrusion amount of side collision is reduced, the side collision safety performance is improved, the bending rigidity and the bending mode are improved, and the NVH performance is improved.

Drawings

Fig. 1 is a schematic structural view of a force transmission assembly of a B-pillar of an automobile in the prior art.

Fig. 2 the utility model relates to a car B post passes power subassembly schematic structure.

Fig. 3 the utility model relates to a car B post passes power subassembly along fig. 2A-A sectional view.

Description of the figures

1 … B pillar inner panel 2 … sill inner panel 3 … seat mounting cross member

4 … front floor body 5 … harness mounting point 6 … lower mounting point of safety belt

7 … seat mounting point 8 … third flange 9 … first flange

10 … second flange 11 … inclined support surface 12 … crossbeam extending section

13 … bulge 14 … doorsill outer plate

Detailed Description

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "vertical", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, 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.

The utility model provides a car B post power transmission assembly structure symmetry of the car left and right sides, the utility model discloses a be located the left car B post power transmission assembly of automobile body and explain as the example. The utility model discloses it is with pencil mounting point 5 is in the front side, mounting point 6 is in the rear side under the safety belt, threshold planking 14 is in the outside, seat installation crossbeam 3 is in the inboard, bellying 13 is in the left side, seat installation crossbeam 3 is on the right side to confirm the direction of "preceding", "back", "left", "right", "upper", "lower", "interior", "outer" with this.

The force transfer assembly for the B-pillar of the present invention will be described in detail with reference to fig. 2 and 3 of the drawings.

The utility model relates to an automobile B-pillar force transmission component, please refer to fig. 2 and fig. 3, comprising a B-pillar inner plate 1, a threshold inner plate 2, a seat mounting beam 3 and a front floor body 4, wherein the threshold inner plate 2 is fixed on the inner side of a threshold outer plate 14 in a two-layer manner, the threshold inner plate 2 and the threshold outer plate 14 are enclosed to form a cavity, the lower end of the B-pillar inner plate 1 is inserted between the threshold inner plate 2 and the threshold outer plate 14, the lower end of the B-pillar inner plate 1, the threshold outer plate 14 and the threshold inner plate 2 are fixed in a three-layer manner, a bulge 13 is integrally formed or fixed at the corresponding position of the B-pillar inner plate 1 at the top of the threshold inner plate 2, the left side of the bulge 13 is fixed with the threshold outer plate 14 and the B-pillar inner plate 1 in a three-layer manner, the top and the right side of the bulge 13 are respectively fixed with the corresponding, the bulge 13 and the threshold outer plate 14 are enclosed to form a cavity, the end part of the seat mounting beam 3 and the front floor body 4 are both arranged on the inner side of the threshold inner plate 2 and fixed with the threshold inner plate 2 in a two-layer mode, and the bottom of the seat mounting beam 3 and the front floor body 4 are fixed in a two-layer mode. Thus, the inner sill plate 2 is fixed on the inner side of the outer sill plate 14 in a two-layer manner, the inner sill plate 2 and the outer sill plate 14 are enclosed to form a cavity, the inner sill plate 2 and the outer sill plate 14 form a cavity anti-torsion structure, the lower end of the inner B-pillar plate 1, the outer sill plate 14 and the inner sill plate 2 are fixed in a three-layer manner, the lower end of the inner B-pillar plate 1 is inserted between the inner sill plate 2 and the outer sill plate 14, and the bulge 13 is integrally formed or fixed on the inner sill plate 2 at the corresponding position of the inner sill plate 2 and the inner B-pillar plate 1, so that the stressed area between the inner sill plate 2 and the outer sill plate 14 is increased, namely the stressed area of the closed cavity structure is increased, and further, the load per unit area of the inner sill plate 2 is reduced under the condition of equal impact force, the rigidity and the strength of the inner doorsill plate 2 are increased, so that when the automobile is collided, the intrusion amount of side collision is reduced, the side collision safety performance is improved, the bending rigidity and the bending mode of the inner doorsill plate 2 are improved, and the NVH performance of the automobile is improved. The end part of the seat mounting beam 3 and the front floor body 4 are both arranged on the inner side of the doorsill inner plate 2 and fixed with the doorsill inner plate 2 in a two-layer mode, the bottom of the seat mounting beam 3 is fixed with the front floor body 4 in a two-layer mode, in this way, the seat mounting beam 3 is fixed on the doorsill inner plate 2 in a transverse two-layer mode, the front floor body 4 is arranged at the bottom of the seat mounting beam 3 and fixed with the doorsill inner plate 2 in a two-layer mode, the seat mounting beam 3 and the front floor body 4 disperse the impact force received by the doorsill inner plate 2 at the same time, the impact force is dispersed and transmitted to other positions of the front floor body 4 through the front floor body 4, and is transmitted to the other end of the seat mounting beam 3 through the seat mounting beam 3, in this way, the impact force received by the seat mounting beam 3 and the front floor body 4 are further dispersed and transmitted to the doorsill inner plate 2 and the fixed corresponding position of board 1 plays the supporting role, and then has reduced the invasion volume of threshold inner panel 2 to the inside of automobile when the side impact takes place for the automobile, and then has promoted the side impact security performance. The utility model discloses a car B post passes power subassembly, advantage for prior art is: the structure is simple, the cost of the whole vehicle is reduced, the intrusion amount of side collision is reduced, the side collision safety performance is improved, the bending rigidity and the bending mode are improved, and the NVH performance is improved.

The utility model discloses a car B post passes power subassembly please refer to fig. 2, fig. 3, can also be on the basis of preceding technical scheme: the top of the seat mounting beam 3 is provided with a seat mounting point 7, and the front feet at the outer side of the first row of seats are detachably fixed with the seat mounting beam 3 through the seat mounting point 7. In this way, the outer front legs of the first row seats are mounted on the seat mounting cross beam 3 through the seat mounting points 7, the acting force borne by the first row seats is transmitted and dispersed to the front floor body 4 through the seat mounting cross beam 3, and risks such as cracking of the seat mounting cross beam 3 and the front floor body 4 due to stress concentration are avoided, so that the stress range of the seat mounting cross beam 3 and the front floor body 4 is reduced, and the mounting strength of the first row seats is effectively enhanced by arranging the seat mounting points 7 on the seat mounting cross beam 3.

The utility model discloses a car B post passes power subassembly please refer to fig. 2, fig. 3, can also be on the basis of preceding technical scheme: the front side and the rear side of the seat mounting beam 3 are respectively provided with a second flanging 10, and the seat mounting beam 3 is fixed with the front floor body 4 in a two-layer mode through the second flanging 10. Thus, the contact area between the seat mounting beam 3 and the front floor body 4 is increased by the second flanging 10, so that the seat mounting beam 3 and the front floor body 4 are more attached at the fixing positions of the seat mounting beam 3 and the front floor body 4, the thickness of the seat mounting beam 3 and the front floor body 4 at the fixed corresponding positions is increased, the seat mounting beam 3 and the front floor body 4 form a closed cavity anti-torsion structure, the fixed corresponding positions of the seat mounting beam 3 and the front floor body 4 are more stable in the transmission process of collision force, and the side collision force is transmitted along the seat mounting beam 3 on the front floor body 4 along the direction of the seat mounting beam 3.

The utility model discloses a car B post passes power subassembly please refer to fig. 2, fig. 3, can also be on the basis of preceding technical scheme: the seat mounting cross beam 3 is integrally formed with a cross beam extension section 12 extending towards one side of the threshold inner plate 2, and the cross beam extension section 12 extends from the seat mounting cross beam 3 to the outer side of the top of the bulge 13. Like this, seat installation crossbeam 3 passes through crossbeam extension 12 gradually to on the threshold inner panel 2 bellying 13 increases the height, crossbeam extension 12 makes the installation crossbeam to bellying 13 smooth transition, with on the seat installation crossbeam 3 seat mounting point 7 forms the bracing structure, and bellying 13 makes again the height of threshold inner panel 2 increases, can effectual reduction the turnover is aroused when the side impact takes place for the car to threshold inner panel 2, and then reduces the invasion volume of threshold inner panel 2 has promoted the security performance of collision. According to a further preferable technical scheme, the front side and the rear side of the beam extension section 12 are equally divided into a diagonal bracing surface 11 which is obliquely extended towards the front floor body 4 and the doorsill inner plate 2, the front part of the diagonal bracing surface 11 is integrally formed or fixedly connected with the beam extension section 12, the rear part of the diagonal bracing surface 11 is fixed with the doorsill inner plate 2 in a two-layer mode, and the bottom of the diagonal bracing surface 11 is fixed with the front floor body 4 in a two-layer mode. Therefore, the front floor body 4, the doorsill inner plate 2 and the seat mounting cross beam 3 are intersected to form an included angle, the inclined strut surface 11 is respectively intersected with the three on the inclined plane of the triangular body formed by the three in a clamping mode to form an inclined strut structure, the front floor body 4, the doorsill inner plate 2, the seat mounting cross beam 3 and the inclined strut surface 11 are respectively four surfaces of the triangular body, and the structure is stable and firm. According to a further preferable technical scheme, a first flanging 9 is arranged on the rear side of the inclined supporting surface 11, and the seat mounting cross beam 3 is fixed with the doorsill inner plate 2 in a two-layer mode through the first flanging 9. Like this, first turn-ups 9 has increased seat installation crossbeam 3 with the area of contact of threshold inner panel 2 makes seat installation crossbeam 3 with threshold inner panel 2 laminates more in both fixed departments, has increased seat installation crossbeam 3 with the thickness of threshold inner panel 2 in fixed corresponding position department, seat installation crossbeam 3 with threshold inner panel 2 forms confined cavity antitorque structure, and then makes fixed corresponding position department between them more firm in the impact transmission process, and the side impact is followed during seat installation crossbeam 3 transmits, still can follow on the threshold inner panel 2 the direction transmission of seat installation crossbeam 3.

The utility model discloses a car B post passes power subassembly please refer to fig. 2, fig. 3, can also be on the basis of preceding technical scheme: the rear part of the vertical surface of the inner doorsill plate 2 at the corresponding position where the seat mounting cross beam 3 is fixed is provided with a lower safety belt mounting point 6, and the lower part of the pre-tightening safety belt is detachably fixed with the inner doorsill plate 2 through the lower safety belt mounting point 6. Therefore, if the front floor body 4 needs to be raised to the height, because the protruding part 13 is arranged on the inner threshold plate 2, the lower part of the pre-tightening safety belt can still be fixed at the position corresponding to the lower mounting point 6 of the safety belt, the mounting requirement of the pre-tightening safety belt is met, an additional safety belt mounting bracket is not needed, and the whole vehicle cost is reduced.

The utility model discloses a car B post passes power subassembly please refer to fig. 2, fig. 3, can also be on the basis of preceding technical scheme: the top plane of the inner doorsill plate 2 is provided with at least one wiring harness mounting point 5, and the main wiring harness of the doorsill passes through the wiring harness mounting point 5 and is detachably fixed with the inner doorsill plate 2. Therefore, if the front floor body 4 needs to be raised to the height, the threshold main wiring harness can still be fixed at the position corresponding to the wiring harness mounting point 5 because the bulge 13 is arranged on the threshold inner plate 2, and the mounting requirement of the threshold main wiring harness is met.

The utility model discloses a car B post passes power subassembly please refer to fig. 2, fig. 3, can also be on the basis of preceding technical scheme: the upper side of the threshold inner plate 2 is provided with a third flanging 8, the third flanging 8 is fixed with the B-pillar inner plate 1 and the threshold outer plate 14 in a three-layer manner at the overlapping corresponding positions of the three, and the third flanging 8 and the threshold outer plate 14 are fixed in a two-layer manner at the overlapping corresponding positions of the two. Thus, the third flanging 8 and the threshold outer plate 14 are fixed in a two-layer mode at the overlapping corresponding positions of the third flanging 8 and the threshold outer plate 14, the contact area of the threshold inner plate 2 and the threshold outer plate 14 is increased, the threshold inner plate 2 and the threshold outer plate 14 are more attached at the fixing positions of the threshold inner plate and the threshold outer plate 14, the thickness of the threshold inner plate 2 and the threshold outer plate 14 at the fixing corresponding positions is increased, the threshold inner plate 2 and the threshold outer plate 14 form a closed cavity anti-torsion structure, the fixing corresponding positions of the threshold inner plate and the threshold outer plate 14 are more stable in the collision force transmission process, and the side collision force is transmitted to the threshold inner plate 2 from the position corresponding to the third flanging 8. The third flanging 8, the B-pillar inner plate 1 and the threshold outer plate 14 are fixed in a three-layer manner at the overlapping corresponding positions of the three, namely the threshold inner plate 2, the threshold outer plate 14 and the B-pillar inner plate 1 are provided with overlapping parts at the position of the third flanging 8, and the three are fixed in a three-layer manner at the corresponding positions of the overlapping parts, so that the impact force can be transmitted to the upper end of the B-pillar inner plate 1 through the lower end of the B-pillar inner plate 1 at the corresponding positions of the overlapping parts of the three, and thus, the B-pillar inner plate 1 can transmit part of the impact force received by the threshold inner plate 2 to the upper automobile body of an automobile, and further indirectly increases the rigidity and the strength of the threshold inner plate 2.

The above description is only for the description of several embodiments of the present invention, but the scope of the present invention should not be considered as falling within the scope of the present invention, in which all the equivalent changes or modifications or the equal-scale enlargement or reduction etc. according to the design spirit of the present invention are made.

Claims

1. The utility model provides an automobile B post passes power subassembly which characterized in that: the automobile front floor comprises a B-pillar inner plate, a threshold inner plate, a seat mounting beam and a front floor body, wherein the threshold inner plate is fixed on the inner side of a threshold outer plate in a two-layer mode, a cavity is formed by enclosing the threshold inner plate and the threshold outer plate, the lower end of the B-pillar inner plate is inserted between the threshold inner plate and the threshold outer plate, the lower end of the B-pillar inner plate, the threshold outer plate and the threshold inner plate are fixed in a three-layer mode, a bulge is integrally formed or fixed at the position, corresponding to the B-pillar inner plate, of the top of the threshold inner plate, the left side of the bulge is fixed with the threshold outer plate and the B-pillar inner plate in a three-layer mode, the top and the right side of the bulge are respectively fixed with the corresponding position of the seat mounting beam in a two-layer mode, a cavity is formed by enclosing the bulge and the threshold, and the end part of the seat mounting beam and the front, the bottom of the seat mounting beam is fixed with the front floor body in a two-layer mode.

2. The automotive B-pillar force transfer assembly of claim 1, wherein: the seat mounting cross beam extends and is fixed with a cross beam extension section towards one side of the doorsill inner plate in an integrated forming mode, and the cross beam extension section extends to the outer side of the top of the protruding portion from the seat mounting cross beam.

3. The vehicle B-pillar force transfer assembly of claim 2, wherein: the front side and the rear side of the beam extension section are equally divided into two sides, namely, the front floor body and the doorsill inner plate are obliquely extended to form an inclined strut surface, the front part of the inclined strut surface is integrally formed or fixedly connected with the beam extension section, the rear part of the inclined strut surface is fixed with the two layers of the doorsill inner plate, and the bottom of the inclined strut surface is fixed with the two layers of the front floor body.

4. The vehicle B-pillar force transfer assembly of claim 3, wherein: the rear side of the inclined strut surface is provided with a first flanging, and the seat mounting cross beam is fixed with the inner plate of the threshold in a two-layer mode through the first flanging.

5. The automotive B-pillar force transfer assembly of any one of claims 1-4, wherein: the top of the seat mounting beam is provided with a seat mounting point, and the front feet at the outer side of the first row of seats are detachably fixed with the seat mounting beam through the seat mounting point.

6. The automotive B-pillar force transfer assembly of any one of claims 1-4, wherein: and the front side and the rear side of the seat mounting beam are respectively provided with a second flanging, and the seat mounting beam is fixed with the front floor body in a two-layer manner through the second flanging.

7. The automotive B-pillar force transfer assembly of any one of claims 1-4, wherein: the rear part of the vertical surface of the inner doorsill plate at the corresponding position where the seat mounting cross beam is fixed is provided with a lower safety belt mounting point, and the lower part of the pre-tightening safety belt is detachably fixed with the inner doorsill plate through the lower safety belt mounting point.

8. The automotive B-pillar force transfer assembly of any one of claims 1-4, wherein: the top plane of the threshold inner plate is provided with at least one wiring harness installation point, and the threshold main wiring harness is detachably fixed with the threshold inner plate through the wiring harness installation point.

9. The automotive B-pillar force transfer assembly of any one of claims 1-4, wherein: and a third flanging is arranged on the upper side of the threshold inner plate, the third flanging is fixed with the B column inner plate and the threshold outer plate in a three-layer manner at the overlapping corresponding position of the three parts, and the third flanging and the threshold outer plate are fixed in a two-layer manner at the overlapping corresponding position of the three parts.