CN114537537A - Automobile front floor beam assembly and preparation method thereof - Google Patents

Abstract

The disclosure provides an automobile front floor beam assembly and a preparation method thereof, belonging to the technical field of vehicle parts. A front seat beam and two seat mounting brackets in the automobile front floor beam assembly are connected with a front floor, the two seat mounting brackets are distributed at intervals along the length direction of the front seat beam, and the side walls of the two seat mounting brackets are connected with the front seat beam. The height and the width of the front seat beam are provided with adjusting spaces, and the height of the front seat beam is increased to improve the side collision performance of the front seat beam; the seat mounting bracket also improves the strength of the front seat beam. The side impact strength of the automobile front floor beam assembly can be ensured without a reinforcing plate, the preparation period and the preparation cost of the automobile front floor beam assembly are shortened, and the obtained automobile front floor beam assembly meets the side impact regulation requirements.

Description

Automobile front floor beam assembly and preparation method thereof

Technical Field

The disclosure relates to the technical field of vehicle parts, in particular to an automobile front floor beam assembly and a preparation method thereof.

Background

The automobile front floor beam assembly is an important part of an automobile, is mainly used for connecting an automobile chassis and an automobile seat and plays a role in bearing and protecting to a certain extent.

The automobile front floor beam assembly comprises a front floor and two seat supporting assemblies, wherein the two seat supporting assemblies are distributed on the front floor at intervals. Each seat support assembly includes a front seat beam, a reinforcement plate, and a seat mounting bracket. One side of the front floor is connected with a vehicle body carrying disc of the automobile, and the other side of the front floor is connected with a front seat cross beam. The seat mounting bracket is fixedly connected above the front seat cross beam and used for connecting a front seat of an automobile, and the reinforcing plate is connected with the front floor and positioned on two sides of the front seat cross beam in the width direction. The front seat cross beam and the reinforcing plate in the front floor cross beam assembly can block the door of the automobile by the end surface of the front seat cross beam when the automobile has a side collision accident so as to reduce the possibility that the door of the automobile collides with a passenger on the front seat, and thus, the passenger is protected. The reinforcing plate plays the supporting role to the crossbeam in order to guarantee that the intensity of crossbeam is enough, and the reinforcing plate also can play the effect of blockking in order to guarantee that car front floor crossbeam assembly satisfies the side impact law requirement to the door simultaneously.

The front floor beam assembly needs to use the above structure to ensure the overall structural strength and meet the side impact legislation requirements of automobiles, but the increase of the reinforcement plate in the seat support assembly, in particular, leads to the increase of the manufacturing period and the manufacturing cost of the front floor beam assembly.

Disclosure of Invention

The embodiment of the disclosure provides an automobile front floor beam assembly and a manufacturing method thereof, which can simplify the manufacturing period of the automobile front floor beam assembly and ensure that the obtained automobile front floor beam assembly meets the side impact regulation requirement. The technical scheme is as follows:

the disclosed embodiment provides an automobile front floor beam assembly, which comprises a front floor and two seat supporting components, wherein the two seat supporting components are distributed on the front floor at intervals,

every seat supporting component all includes front seat crossbeam and two seat installing supports, the front seat crossbeam two seat installing supports all with the front floor links to each other, two seat installing supports are followed the length direction interval distribution of front seat crossbeam, just two seat installing supports all are located one side on the front seat crossbeam width direction, two seat installing supports all with the front seat crossbeam links to each other.

Optionally, the seat mounting bracket comprises a bracket main body, at least two floor connecting plates and at least one cross beam connecting plate,

the at least two floor connecting plates are distributed on the support main body at intervals, the at least two floor connecting plates are connected with the front floor, the at least one beam connecting plate is distributed on the support main body, and the at least one beam connecting plate is connected with the front seat beam.

Optionally, the at least two floor connecting plates are located on the same plane and parallel to the front floor, and the plane of the floor connecting plate is perpendicular to the plane of the cross beam connecting plate.

Optionally, the seat mounting bracket further includes a support rib plate, the support rib plate is connected to the bracket main body, a plane where the support rib plate is located is parallel to a plane where the floor connecting plate is located, a minimum height of the support rib plate relative to the front floor is greater than a maximum height of the cross beam connecting plate relative to the front floor, and the support rib plate is connected to the cross beam of the front seat.

Alternatively, the bracket body is a box-shaped structure and adjacent two of the six surfaces of the box-shaped structure have notches, one surface of the box-shaped structure having the notches is a beam connecting surface, the other surface of the box-shaped structure having the notches is a floor connecting surface, and the beam connecting plate is connected to the beam connecting surface and the floor connecting plate is connected to the floor connecting surface.

Optionally, the front seat rail has a seat contact surface, and the maximum height of the seat mounting bracket is equal to or greater than the height of the seat contact surface.

Optionally, the material of the front seat rail is a thermoformed material.

Optionally, the ratio of the maximum height of the front seat cross beam to the thickness of the front floor is 69-85.

Optionally, the length direction of the front seat cross beam is parallel to the length direction of the front floor, the front seat cross beam comprises a first side surface connected with the two seat mounting brackets and a second surface opposite to the first side surface, and the ratio of the distance between the second side surface of the front seat cross beam and the front floor cross beam to the width of the front floor in the width direction of the front seat cross beam is 0.6-0.7.

The embodiment of the disclosure provides a method for manufacturing an automobile front floor beam assembly, which comprises the following steps:

providing a front floor, two front seat beams and four seat mounting brackets;

welding the two seat mounting brackets on each front seat cross beam, wherein the two seat mounting brackets are distributed at intervals along the length direction of the front seat cross beam, the two seat mounting brackets are positioned on one side in the width direction of the front seat cross beam, and the two seat mounting brackets are connected with the front seat cross beam to obtain two seat supporting assemblies;

and welding a groove between the front seat cross beam and the front floor and a groove between the seat mounting bracket and the front floor to obtain the automobile front floor cross beam assembly.

The beneficial effect that technical scheme that this disclosure embodiment provided brought includes at least:

in the automobile front floor beam assembly, each seat supporting assembly comprises a front seat beam and two seat mounting supports, the two seat mounting supports are connected with the front floor and the front seat beam respectively, the two seat mounting supports are distributed at intervals along the length direction of the front seat beam, and the two seat mounting supports are located on one side of the front seat beam in the width direction. And the seat installing support links to each other with preceding floor and front seat crossbeam simultaneously, and under the prerequisite of seat installing support itself obtained stable support and guaranteed use intensity, seat installing support itself also can play reinforcing and supporting role to the front seat crossbeam, also can improve the intensity of front seat crossbeam.

The automobile front floor beam assembly provided by the embodiment of the disclosure can ensure the side impact strength of the automobile front floor beam assembly without a reinforcing plate, simplifies the structure of the automobile front floor beam assembly, can shorten the preparation period and the preparation cost of the automobile front floor beam assembly, and ensures that the obtained automobile front floor beam assembly meets the side impact regulation requirement.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

FIG. 1 is a partial schematic view of a front floor beam assembly of a related art vehicle;

FIG. 2 is a simplified structural schematic diagram of an automotive front floor beam assembly provided by an embodiment of the present disclosure;

FIG. 3 is a top view of a seat support assembly provided by an embodiment of the present disclosure;

FIG. 4 is an exploded view of a seat support assembly provided by an embodiment of the present disclosure;

FIG. 5 is a schematic structural view of a seat support assembly provided by an embodiment of the present disclosure;

FIG. 6 is a flowchart of a method for manufacturing a cross member assembly of a front floor of an automobile according to an embodiment of the present disclosure;

FIG. 7 is a flowchart of another method for manufacturing a cross member assembly of a front floor of an automobile according to an embodiment of the present disclosure.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

FIG. 1 is a partial schematic view of a related art automotive front floor beam assembly. As shown in fig. 1, the vehicle front floor beam assembly includes a front floor 1 and two seat support assemblies 2, and the two seat support assemblies 2 are spaced apart from each other on the front floor 1. Each seat support assembly 2 includes a front floor 1, a front seat rail 21, a reinforcement plate 100, and a seat mounting bracket. Only one seat support assembly 2 is shown in fig. 1, and the structure of the seat mounting bracket is omitted. The front seat cross member 21 is connected to the front floor 1, and the reinforcement plate 100 is provided on the front floor 1 on one side in the width direction of the front seat cross member 21.

It should be noted that, in the related art, since the seat mounting bracket of the automobile is generally stacked above the front seat cross member 21, the seat is mounted on the seat mounting bracket. Under the premise that the space height in the automobile is limited, the seat and the seat mounting bracket occupy a large mounting space, so that the maximum height of the front seat cross beam 21 below the seat mounting bracket can be prepared is limited. When the height of the front seat cross member 21 is limited and it is difficult to meet the side impact law, a reinforcing plate is generally added to one side or both sides in the width direction of the front seat cross member 21.

Fig. 2 is a simplified structural schematic diagram of a vehicle front floor beam assembly provided by an embodiment of the present disclosure, and as shown in fig. 2, the vehicle front floor beam assembly includes a front floor 1 and two seat support assemblies 2, and the two seat support assemblies 2 are spaced apart from each other on the front floor 1.

Fig. 3 is a top view of the seat support assemblies provided in the embodiment of the present disclosure, and as can be seen from fig. 3, each seat support assembly 2 includes a front seat cross beam 21 and two seat mounting brackets 22, the front seat cross beam 21 and the two seat mounting brackets 22 are both connected to the front floor 1, the two seat mounting brackets 22 are distributed at intervals along the length direction of the front seat cross beam 21, the two seat mounting brackets 22 are both located on one side of the width direction of the front seat cross beam 21, and the two seat mounting brackets 22 are both connected to the front seat cross beam 21.

The automobile front floor beam assembly comprises a front floor 1 and two seat supporting assemblies 2, wherein the two seat supporting assemblies 2 are distributed on the front floor 1 at intervals, and the installation of two seats in the front row of an automobile can be realized. Every seat supporting component 2 all includes preceding seat crossbeam 21 and two seat installing support 22, and preceding seat crossbeam 21, two seat installing support 22 all link to each other with preceding floor 1, and two seat installing support 22 are along the length direction interval distribution of preceding seat crossbeam 21, and two seat installing support 22 all are located the ascending one side of preceding seat crossbeam 21 width direction, and two seat installing support 22 all link to each other with preceding seat crossbeam 21. The seat mounting bracket 22 is positioned on one side of the front seat cross beam 21 and is not directly mounted on the front seat cross beam 21 in a stacked manner, so that under the premise that the height of the space in the automobile and the height of the seat are not changed, the height limit of the front seat cross beam 21 is reduced, the height and the width of the front seat cross beam 21 have certain adjusting space, and the strength of the front seat cross beam 21 and the blocking capacity of a vehicle door deformed by side collision can be increased by increasing the height of the front seat cross beam 21 so as to improve the side collision performance of the front seat cross beam 21; and seat installing support 22 links to each other with front floor 1 and front seat crossbeam 21 simultaneously, and under seat installing support 22 itself obtained stable support and guaranteed use intensity's prerequisite, seat installing support 22 itself also can play reinforcing and supporting role to front seat crossbeam 21, also can improve front seat crossbeam 21's intensity. The side impact strength of the automobile front floor beam assembly can be ensured without the reinforcing plate 100, the structure of the automobile front floor beam assembly is simplified, and the preparation period and the preparation cost of the automobile front floor beam assembly can be shortened; and seat installing support 22 moves to one side of front seat crossbeam 21 among the car front floor crossbeam assembly, and the space that front seat crossbeam 21 is close to the opposite side of back row does not receive seat installing support 22's influence, can improve back row passenger's travelling comfort and guarantee that the car front floor crossbeam assembly who obtains satisfies the side and bumps the legal requirement.

The vehicle front floor cross member assembly provided in the present disclosure includes a front floor 1, a front seat cross member 21, and a seat mounting bracket 22 corresponding to a driver seat and a seat arranged in parallel with the driver seat of the vehicle. The side impact accident according to the embodiment of the present disclosure mainly refers to an accident in which, when a side of an automobile is impacted, a door of the automobile is deformed and the impact is transmitted to a driver or a passenger, and the ability of the front seat cross member 21 to prevent the side impact is the ability of the front seat cross member 21 to prevent the deformation of the edge of the automobile and transmit the impact to the driver or the passenger.

Illustratively, the front floor 1 generally includes a side member portion 11 and two flat plate support portions 12 respectively located on both sides of the side member portion 11, the two flat plate support portions 12 are located on both sides of the side member portion 11 in the width direction, both side surfaces of the two flat plate support portions 12 are connected to the side member portion 11, and the two flat plate support portions 12 are located on the same plane. The stable installation of seat supporting component 2 can be realized to preceding floor 1 adoption above structure, guarantees the quality and the stability in use of the car front floor crossbeam assembly that finally obtains.

It should be noted that the whole front floor 1 may be a symmetrical structure, a symmetrical plane of the front floor 1 is a symmetrical plane of the longitudinal beam portion 11 in the length direction, and on the premise that the front floor 1 includes the longitudinal beam portion 11 and the two flat plate support portions 12, the two seat support assemblies 2 may be symmetrically distributed on two sides of the longitudinal beam portion 11. The installation of the seat of the automobile is convenient and the integral stable use of the automobile is ensured.

Illustratively, referring to fig. 3, the surface of the flat plate supporting portion 12 of the front floor 1 may have a plurality of protrusions 13 distributed at intervals, the protrusions 13 are elongated, and the length direction of the protrusions 13 is perpendicular to the length direction of the front seat cross member 21. The addition of the protrusions 13 can further improve the strength and stability of the front floor 1.

Fig. 4 is an exploded view of a seat support assembly provided in the embodiment of the present disclosure, and referring to fig. 3 and 4, it can be seen that contact surfaces exist between the front seat cross member 21 and the seat mounting bracket 22 and the partial protrusion 13 on the front floor 1. The friction force and the connection strength between the front seat cross member 21, the seat mounting bracket 22 and the front floor 1 can be increased, and the side impact resistance of the automobile front floor cross member assembly can be improved.

Alternatively, the shape of the protrusions may be rounded rectangles or other shapes. The present disclosure is not so limited. The rounded rectangle is a rectangle with two adjacent sides in arc transition.

In one implementation provided by the present disclosure, two seat mounting brackets 22 may be located at both ends of the front seat cross member 21, respectively. It is possible to realize stable support of both ends of the front seat cross member 21 and to improve the strength of both ends of the front seat cross member 21, and to reduce the deformation that may occur at both ends of the front seat cross member 21 to improve the ability of the front seat cross member 21 to prevent side collision.

Optionally, the ratio of the maximum height of the front seat cross member 21 to the thickness of the front floor 1 is 69 to 85.

The ratio of the maximum height of the front seat cross beam 21 to the thickness of the front floor 1 is within the above range, so that the height of the front seat cross beam 21 can be ensured to be larger, the requirement of preventing side impact is met, and the capability of the front seat cross beam 21 of preventing side impact accidents is improved.

Illustratively, the material of the front seat cross member 21 is a thermo-formed material.

The front seat cross beam 21 is made of a thermal forming material, so that the strength of the front seat cross beam 21 can be ensured, and the integral wall thickness of the front seat cross beam 21 is reduced to a certain extent, so that the obtained automobile front floor cross beam assembly is lighter while the strength is ensured.

Alternatively, the hot formed material may comprise CR950/1300HS, which is a steel material having a strength yield greater than 950MPa and a tensile strength greater than 1300MPa after quenching. The resulting front seat cross member 21 has a good quality.

In one implementation provided by the present disclosure, the thermoformed material can also include a thermoformed boron steel material or a thermoformed non-boron steel material. The wall thickness of the front seat cross member 21 may be 1.2 mm. The effect of weight reduction of the front seat cross member 21 can be improved.

It should be noted that the heights referred to in the present disclosure are all determined with the surface of the flat plate support portion 12 of the front floor 1 for mounting the front seat cross member 21 as a zero reference surface.

Alternatively, the maximum height of the front seat cross member 21 may be 50 to 60mm, and the maximum width of the front seat cross member 21 may be 70 to 100 mm. The strength and the use stability of the front seat cross beam 21 can be ensured, and the internal space of the automobile cannot be excessively occupied.

For example, the front seat cross member 21 may have a U-shaped flanged structure, the U-shaped opening of the front seat cross member 21 faces the front floor 1, and the flanged portion of the front seat cross member 21 is connected to the front floor 1. The weight of the front seat cross beam 21 can be reduced while the use strength of the front seat cross beam 21 can be ensured, and the whole light weight of the automobile is facilitated.

In one implementation provided by the present disclosure, based on different requirements of the automobile, the height of the front seat cross member 21 may be constant in a direction perpendicular to the flat plate supporting portion 12 of the front floor 1, or the heights of both ends of the front seat cross member 21 are higher than the height of the middle portion of the front seat cross member 21. The present disclosure is not so limited.

It is noted that in fig. 4, a mounting hole 211 is prepared in an end of the front seat cross member 21 away from the side member portion 11 in the present disclosure. In the present disclosure, the height of one end of the front seat cross member 21 having the mounting hole 211 is larger than the height of the other portions of the front seat cross member 21. In other implementations provided by the present disclosure, the height of the beam may also be made constant, which is not limited by the present disclosure.

Optionally, the length direction of the front seat cross beam 21 is parallel to the length direction of the front floor 1, the front seat cross beam 21 includes a first side surface connected to the two seat mounting brackets 22 and a second surface opposite to the first side surface, and the ratio of the distance D between the second side surface of the front seat cross beam 21 and the front floor 1 cross beam to the width D of the front floor 1 in the width direction of the front seat cross beam 21 is 0.6 to 0.7 (see fig. 2).

Usually a seat mounting bracket 22 is required for mounting the seat and close to the head of the automobile, and therefore the space between the second side face of the front seat cross member 21 and the cross member of the front floor 1 is a space for providing a rear passenger. The seat mounting bracket 22 moves from being stacked on the front seat cross beam 21 to one side of the front seat cross beam 21, and the forward movement of the seat mounting bracket 22 relative to the position of the front floor 1 enables the space between the second side surface of the front seat cross beam 21 and the cross beam of the front floor 1 to be larger, which is more beneficial to improving the riding comfort of rear passengers.

In the present disclosure, the longitudinal direction of the front floor 1 is the width direction of the automobile, the width direction of the front floor 1 is the length direction of the automobile, and the length direction of the side member part 11 is also the width direction of the automobile.

Fig. 5 is a schematic structural view of a seat support assembly provided in an embodiment of the present disclosure, and as can be seen from fig. 4 and 5, the seat mounting bracket 22 includes a bracket main body 221, at least two floor connecting plates 222 and at least one cross beam connecting plate 223, the at least two floor connecting plates 222 are spaced apart from each other on the bracket main body 221, the at least two floor connecting plates 222 are connected to the front floor 1, the at least one cross beam connecting plate 223 is distributed on the bracket main body 221, and the at least one cross beam connecting plate 223 is connected to the front seat cross beam 21.

The seat mounting bracket 22 comprises a bracket main body 221, at least two floor connecting plates 222 and at least one cross beam connecting plate 223, wherein the at least two floor connecting plates 222 are connected with the front floor 1, and the cross beam connecting plates 223 are connected with the cross beam, so that stable connection and support between the seat mounting bracket 22 and the bottom plate and between the seat mounting bracket and the cross beam can be ensured. And the connection and support between the seat mounting bracket 22 and the front floor 1 are tight, so that the use strength of the seat mounting bracket 22 can be ensured, and the stable connection of the seat connected on the seat mounting bracket 22 can be ensured.

Optionally, at least two floor connecting plates 222 are located on the same plane, the floor connecting plates 222 are parallel to the front floor 1, and the plane of the floor connecting plates 222 is perpendicular to the plane of the beam connecting plates 223.

At least two floor connecting plates 222 are located on the same plane, and the floor connecting plates 222 are parallel to the front floor 1, so that the connecting area between the floor connecting plates 222 and the front floor 1 can be effectively increased to ensure stable connection between the floor connecting plates 222 and the front floor 1. And the plane of the floor connecting plate 222 is perpendicular to the plane of the cross beam connecting plate 223, the connection strength between the cross beam connecting plate 223 and the front seat cross beam 21 can be ensured on the premise that the side surface of the front seat cross beam 21 is generally perpendicular to the front floor 1.

It should be noted that the plane of the floor connecting plate 222 in the present disclosure is parallel to the plane of the flat plate supporting portion 12 of the front floor 1, and the plane of a certain structure in the present disclosure is the plane of the surface with the largest area of the structure.

Illustratively, the bracket body 221 may be a box-shaped structure and two adjacent surfaces of six surfaces of the box-shaped structure have a gap, one gap surface of the box-shaped structure is a beam connection surface, the other gap surface of the box-shaped structure is a floor connection surface, the beam connection plate 223 is connected to the beam connection surface, and the floor connection plate 222 is connected to the floor connection surface. The stable support and strength of the bracket main body 221 can be ensured, and the obtained automobile front floor beam assembly is lighter. Each notch surface is a semi-enclosed shape enclosed by three rectangular surfaces.

In other implementations provided by the present disclosure, the bracket main body 221 may also be a block structure, a prism structure, or a column structure, and the floor connecting plate 222 and the beam connecting plate 223 may be distributed on the bracket main body 221 at intervals, which is not limited by the present disclosure.

Illustratively, the beam connection plate 223 may be parallel to the beam connection surface, and the floor connection plate 222 may be parallel to the floor connection surface, which may ensure the overall installation and connection strength of the seat mounting bracket 22.

In one implementation provided by the present disclosure, one of the two seat mounting brackets 22 remote from the side rail portion 11 may have three floor connecting plates 222, two cross beam connecting plates 223; one of the two seat mounting brackets 22 adjacent to the side rail portion 11 may have two floor attachment plates 222 and one cross member attachment plate 223. In addition to the two floor connecting plates 222 and the one cross beam connecting plate 223, one seat mounting bracket 22 near the side beam portion 11 may further have two strip-shaped side beam connecting plates 224, the two side beam connecting plates 224 are connected at intervals to one surface of the bracket main body 221 closest to the side beam portion 11, and the surfaces of the two side beam connecting plates 224 are connected with the surface of the side beam portion 11 in an abutting manner. The bracket main body 221 of one of the two seat mounting brackets 22 adjacent to the side member portion 11 may be a box-shaped structure having three adjacent surfaces with a notch, one of the notches faces the side member portion 11, and the two side member attachment plates 224 may be connected to the surfaces of the notches facing the side member portion.

Two longitudinal beam connecting plates 224 are additionally arranged on one seat mounting bracket 22 of the two seat mounting brackets 22, and the stress direction of the longitudinal beam connecting plates 224 is not identical to that of the other connecting plates, so that the strength of the seat cross beam can be improved, and the deformation can be reduced.

Optionally, the seat mounting bracket 22 further includes a support rib 225, the support rib 225 is connected to the bracket main body 221, a plane of the support rib 225 is parallel to a plane of the floor connecting plate 222, a minimum height of the support rib 225 relative to the front floor 1 is greater than a maximum height of the cross beam connecting plate 223 relative to the front floor 1, and the support rib 225 is connected to the front seat cross beam 21.

The support rib 225 can improve the connection strength between the front seat cross member 21 and the seat mounting bracket 22, and ensure that the seat mounting bracket 22 can stably support the seat. The support rib plate 225 may be attached to one surface of the bracket main body 221, which is most distant from the front floor 1.

It should be noted that the floor connecting plate 222 and the longitudinal beam connecting plate 224 provided in the present disclosure are both used for connection between the seat mounting bracket 22 and the front floor 1, but the floor connecting plate 222 is used for connection with the flat plate supporting portion 12 of the front floor 1, and the longitudinal beam connecting plate 224 is used for connection with the longitudinal beam portion 11; the cross member connecting plate 223 and the support rib 225 provided in the present disclosure are used to achieve the connection between the seat mounting bracket 22 and the front seat cross member 21, but the cross member connecting plate 223 is used to connect with the side surface of the front seat cross member 21, and the support rib 225 is used to connect with the surface of the front seat cross member 21 parallel to the flat plate support portion 12.

Optionally, the front seat cross member 21 has a seat contact surface 21a, and the maximum height of the seat mounting bracket 22 is equal to or greater than the height of the seat contact surface.

The maximum height of the seat mounting bracket 22 is equal to or greater than the height of the seat contact surface, and it is ensured that the seat mounting bracket 22 and the front seat cross member 21 can achieve stable support of the seat in a nearly flat state.

Fig. 6 is a flowchart of a method for manufacturing a front floor beam assembly of an automobile according to an embodiment of the present disclosure, and referring to fig. 6, the embodiment of the present disclosure provides a method for manufacturing a front floor beam assembly of an automobile, where the method for manufacturing a front floor beam assembly of an automobile is used to manufacture the front floor beam assembly of an automobile according to the foregoing, and the method for manufacturing a front floor beam assembly of an automobile includes:

s101: a front floor, two front seat beams and four seat mounting brackets are provided.

S102: two seat mounting brackets are welded to each front seat cross beam and distributed at intervals along the length direction of the front seat cross beam to obtain two seat support assemblies.

S103: and welding a groove between the front seat cross beam and the front floor and a groove between the seat mounting bracket and the front floor to obtain the automobile front floor cross beam assembly.

The automobile front floor beam assembly comprises a front floor and two seat supporting assemblies, wherein the two seat supporting assemblies are distributed on the front floor at intervals, and the installation of two seats in the front row of an automobile can be realized. Every seat supporting component all includes front seat crossbeam and two seat installing supports, and front seat crossbeam, two seat installing supports all link to each other with the front floor, and two seat installing supports are along the length direction interval distribution of front seat crossbeam, and two seat installing supports all are located the ascending one side of front seat crossbeam width direction, and two seat installing supports all link to each other with the front seat crossbeam. The seat mounting bracket is positioned on one side of the front seat beam and is not directly mounted on the front seat beam in a stacking manner, under the premise that the space height and the seat height in the automobile are not changed, the limitation on the height of the front seat beam is reduced, the height and the width of the front seat beam have certain adjusting space, and the strength of the front seat beam and the blocking capability of a vehicle door deformed by side collision can be increased by increasing the height of the front seat beam so as to improve the side collision performance of the front seat beam; and the seat installing support links to each other with preceding floor and front seat crossbeam simultaneously, and under the prerequisite of seat installing support itself obtained stable support and guaranteed use intensity, seat installing support itself also can play reinforcing and supporting role to the front seat crossbeam, also can improve the intensity of front seat crossbeam. The side impact strength of the automobile front floor beam assembly can be ensured without a reinforcing plate, the structure of the automobile front floor beam assembly is simplified, and the preparation period and the preparation cost of the automobile front floor beam assembly can be shortened; and the seat mounting bracket in the automobile front floor beam assembly moves to one side of the front seat beam, and the space of the front seat beam close to the other side of the rear row is not influenced by the seat mounting bracket, so that the comfort of passengers in the rear row can be improved, and the obtained automobile front floor beam assembly can meet the requirement of side impact regulations.

Fig. 7 is a flowchart of another method for manufacturing a front floor beam assembly of an automobile according to an embodiment of the present disclosure, and referring to fig. 7, the method for manufacturing a front floor beam assembly of an automobile may include:

s201: a front floor, two front seat beams and four seat mounting brackets which are welded structural members are provided.

Optionally, in step S201, the seat mounting bracket is set as a welded structure, so that the quality and the use strength of the seat mounting bracket can be improved.

Optionally, providing a seat mounting bracket may comprise: providing a bracket main body of a box-shaped structure formed by machining or welding; and sequentially welding at least two floor connecting plates and at least one beam connecting plate to the support main body. The seat mounting bracket with qualified quality and stability can be obtained, and the support effect of the seat mounting bracket on the seat can be ensured.

In the implementation manner provided by the present disclosure, the symmetrical grooves on the same structural member may be symmetrically welded or each groove may be welded in sequence, which is not limited by the present disclosure.

S202: two seat installing supports are welded on each front seat cross beam and distributed at intervals along the length direction of the front seat cross beam, the two seat installing supports are connected with the front seat cross beam, and the two seat installing supports are located on one side of the front seat cross beam in the width direction so as to obtain two seat supporting assemblies.

Optionally, the positioning lines corresponding to the two seat mounting brackets respectively can be drawn on the front seat cross beam, the two seat mounting brackets are placed or spot-welded on the front seat cross beam according to the positioning lines, and finally, the groove between the seat mounting brackets and the front seat cross beam is welded. The welding precision between the front seat cross beam and the seat mounting bracket can be ensured so as to improve the overall quality of the obtained front seat cross beam and the seat mounting bracket.

S203: and sequentially welding the groove between the front seat beam and the front floor and the groove between the seat mounting bracket and the front floor to obtain the automobile front floor beam assembly.

When welding the groove between front seat crossbeam and seat installing support and the front floor, weld the groove between welding front seat crossbeam and the front floor earlier, weld the groove between seat installing support and the front floor again, stable in structure's front seat warp littleer and can provide certain support for follow-up needs welded seat installing support, reduces the deformation that seat installing support probably produced when welding, can improve the quality of the car front floor crossbeam assembly who obtains.

The above description is meant to be illustrative of the principles of the present disclosure and not to be taken in a limiting sense, and any modifications, equivalents, improvements and the like that are within the spirit and scope of the present disclosure are intended to be included therein.

Claims (10)

1. A cross beam assembly of a front floor of an automobile is characterized by comprising a front floor (1) and two seat supporting components (2), wherein the two seat supporting components (2) are distributed on the front floor (1) at intervals,

every seat supporting component (2) all include front seat crossbeam (21) and two seat installing support (22), front seat crossbeam (21) two seat installing support (22) all with preceding floor (1) links to each other, two seat installing support (22) are followed the length direction interval distribution of front seat crossbeam (21), just two seat installing support (22) all are located one side on front seat crossbeam (21) width direction, two seat installing support (22) all with front seat crossbeam (21) links to each other.

2. The automotive front floor beam assembly of claim 1, characterized in that the seat mounting bracket (22) includes a bracket body (221), at least two floor connection plates (222), and at least one beam connection plate (223),

the at least two floor connecting plates (222) are distributed on the support main body (221) at intervals, the at least two floor connecting plates (222) are connected with the front floor (1), the at least one beam connecting plate (223) is distributed on the support main body (221), and the at least one beam connecting plate (223) is connected with the front seat beam (21).

3. The automotive front floor crossmember assembly according to claim 2, characterized in that the at least two floor connecting plates (222) are all located on the same plane and the floor connecting plates (222) are parallel to the front floor (1), the plane of the floor connecting plates (222) being perpendicular to the plane of the crossmember connecting plates (223).

4. The automotive front floor beam assembly according to claim 3, characterized in that the seat mounting bracket (22) further comprises a support rib plate (225), the support rib plate (225) is connected with the bracket main body (221), the plane of the support rib plate (225) is parallel to the plane of the floor connecting plate (222), the minimum height of the support rib plate (225) relative to the front floor (1) is greater than the maximum height of the beam connecting plate (223) relative to the front floor (1), and the support rib plate (225) is connected with the front seat beam (21).

5. The automotive front floor cross member assembly according to claim 2, characterized in that the bracket main body (221) is a box-shaped structure and adjacent two of six surfaces of the box-shaped structure have notches, one surface of the box-shaped structure having the notches is a cross member attaching surface, the other surface of the box-shaped structure having the notches is a floor attaching surface, the cross member connecting plate (223) is connected to the cross member attaching surface, and the floor connecting plate (222) is connected to the floor attaching surface.

6. The automotive front floor cross member assembly according to any one of claims 1 to 5, characterized in that the front seat cross member (21) has a seat contact surface (21a), and the maximum height of the seat mounting bracket (22) is equal to or greater than the height of the seat contact surface (21 a).

7. The vehicle front floor crossmember assembly according to any one of claims 1 to 5, wherein the material of the front seat crossmember (21) is a thermoformed material.

8. The vehicle front floor cross member assembly according to any one of claims 1 to 5, characterized in that a ratio of a maximum height of the front seat cross member (21) to a thickness of the front floor (1) is 69 to 85.

9. The automotive front floor cross member assembly according to any one of claims 1 to 5, characterized in that the length direction of the front seat cross member (21) is parallel to the length direction of the front floor (1), the front seat cross member (21) includes a first side surface connected to the two seat mounting brackets (22) and a second surface opposite to the first side surface, and the ratio of the distance between the second side surface of the front seat cross member (21) and the cross member of the front floor (1) to the width of the front floor (1) in the width direction of the front seat cross member (21) is 0.6 to 0.7.

10. A preparation method of an automobile front floor beam assembly is characterized by comprising the following steps:

providing a front floor, two front seat beams and four seat mounting brackets;

welding the two seat mounting brackets on each front seat cross beam, wherein the two seat mounting brackets are distributed at intervals along the length direction of the front seat cross beam, the two seat mounting brackets are positioned on one side in the width direction of the front seat cross beam, and the two seat mounting brackets are connected with the front seat cross beam to obtain two seat supporting assemblies;

and welding a groove between the front seat cross beam and the front floor and a groove between the seat mounting bracket and the front floor to obtain the automobile front floor cross beam assembly.

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