Seat beam assembly

Abstract

A seat crossbeam assembly includes a seat crossbeam, the seat crossbeam assembly also includes a first connecting bracket for connecting the seat crossbeam and a door sill, and a second connecting bracket for connecting the seat crossbeam and a central channel, the first connecting bracket and the second connecting bracket being fixed to two opposite ends of the seat crossbeam. The present invention adopts a structure in which the first connecting bracket and the second connecting bracket are arranged at both ends of the seat crossbeam, which can increase the versatility of the seat crossbeam and realize the platformization of the seat crossbeam. When the vehicle model is changed, it is only necessary to adjust the structure of the connecting brackets on both sides according to the specific vehicle model, thereby achieving the purpose of reducing costs.

Description

Technical Field

[0001] The invention relates to an automobile body structure, in particular to a seat crossbeam assembly. Background Art

[0002] At present, in the process of body design, more and more attention is paid to the lightweight of the body, the platformization of parts and the safety of passengers. The front floor seat beam involves weight, collision safety, seat comfort, NVH and other performances, which are the areas that we need to focus on. Therefore, a good platformization, lightweight and rational structural design of the seat beam will play a vital role in saving costs, improving fuel economy and improving collision safety performance.

[0003] The seat crossbeam of traditional steel bodies generally adopts an integrated design for different models to meet the side impact performance requirements, and the connection with the door sill and center channel is a rigid connection. As for aluminum alloy bodies, due to the characteristics of aluminum alloy materials, its material strength is much lower than that of steel. If the structural design of traditional steel bodies is adopted, it cannot meet the side impact requirements and requires more machining, which is time-consuming and increases costs.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Summary of the invention

[0005] The object of the present invention is to provide a seat crossbeam assembly, which has high versatility and can realize the platformization of the seat crossbeam.

[0006] The present invention provides a seat crossbeam assembly, including a seat crossbeam, wherein the seat crossbeam assembly also includes a first connecting bracket for connecting the seat crossbeam and a door sill, and a second connecting bracket for connecting the seat crossbeam and a central channel, wherein the first connecting bracket and the second connecting bracket are fixed to two opposite ends of the seat crossbeam.

[0007] Furthermore, the seat cross beam includes a first seat cross beam connected to the front part of the seat, and a second seat cross beam connected to the rear part of the seat, and the first connecting bracket and the second connecting bracket are provided at two opposite ends of the first seat cross beam and the second seat cross beam.

[0008] Further, the first connecting bracket includes a first connecting plate for connecting to the seat cross beam, a second connecting plate for connecting to the door sill, a first side plate arranged on two opposite sides of the first connecting plate, a first flange extending outward from an end of the first side plate away from the first connecting plate, and a second side plate connected to the second connecting plate, the first side plate and the first flange, the first connecting plate and the second connecting plate are connected by a first guide section, the second connecting plate and the second side plate are connected by a second guide section, there is a height difference between the first connecting plate and the second connecting plate, and between the second connecting plate and the second side plate, and the first guide section and the second guide section are located above a gap formed between the seat cross beam and the door sill when the seat cross beam is connected to the door sill.

[0009] Furthermore, the first guide section and the second guide section are transition arcs or oblique chamfers.

[0010] Further, the second connecting bracket includes a third connecting plate for connecting to the seat cross beam, a fourth connecting plate for connecting to the middle channel, a third side plate arranged on two opposite sides of the third connecting plate, a second flange extending outward from an end of the third side plate away from the third connecting plate, and a fourth side plate connected to the fourth connecting plate, the third side plate and the second flange, the third connecting plate and the fourth connecting plate are connected by a first connecting section, the fourth connecting plate and the fourth side plate are connected by a second connecting section, and the first connecting section and the second connecting section are located above a gap formed between the seat cross beam and the middle channel when the seat cross beam is connected to the middle channel.

[0011] Further, the first connecting section includes a first flat plate section, a third guide section located between the first flat plate section and the third connecting plate, and a fourth guide section located between the first flat plate section and the fourth connecting plate, and there is a height difference between the first flat plate section and the third connecting plate and the fourth connecting plate.

[0012] Furthermore, the third guide segment and the fourth guide segment are transition arcs or oblique chamfers.

[0013] Furthermore, the second connecting section includes a second flat plate section, a fifth guide section located between the second flat plate section and the fourth side plate, and a sixth guide section located between the second flat plate section and the fourth connecting plate, and there is a height difference between the second flat plate section and the fourth connecting plate.

[0014] Furthermore, the fifth guide segment and the sixth guide segment are transition arcs or oblique chamfers.

[0015] Furthermore, rotary tapping and riveting are adopted between the first connecting bracket and the seat cross beam, and between the second connecting bracket and the seat cross beam.

[0016] It can be seen from the above structural description that the present invention has at least one of the following beneficial effects:

[0017] 1. The present invention configures a first connecting bracket and a second connecting bracket at both ends of the seat crossbeam as connecting pieces between the seat crossbeam and the door sill and the middle channel, so that the seat crossbeam assembly of the present invention can be applied to most aluminum alloy floor structures;

[0018] 2. The present invention adopts a structure in which a first connecting bracket and a second connecting bracket are arranged at both ends of the seat cross beam, which can increase the versatility of the seat cross beam and realize the platformization of the seat cross beam. When the vehicle model is changed, it is only necessary to adjust the structure of the connecting brackets on both sides according to the specific vehicle model, thereby achieving the purpose of cost reduction;

[0019] 3. The seat crossbeam assembly of the present invention can effectively reduce the impact on the occupants during a side collision and ensure the space of the passenger compartment, thereby achieving the purpose of safety.

[0020] 4. After a side collision, the traditional one-piece crossbeam usually needs to replace the entire seat crossbeam, while the present invention only needs to replace the connecting brackets on both sides, thereby achieving the purpose of convenient maintenance and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of a seat crossbeam assembly provided by the present invention.

[0022] Figure 2 It is a top view schematic diagram of the connection relationship between the seat crossbeam assembly, the door sill and the central channel of the present invention.

[0023] Figure 3 for Figure 2 Schematic cross-sectional view along line III-III.

[0024] Figure 4 for Figure 1 Schematic diagram of the center seat crossbar.

[0025] Figure 5 for Figure 4 Schematic cross-sectional view along line VV.

[0026] Figure 6 for Figure 1 A three-dimensional schematic diagram of the first connecting bracket.

[0027] Figure 7 for Figure 1 Schematic top view of the first connecting bracket.

[0028] Figure 8 for Figure 7 Schematic cross-sectional view along line VIII-VIII.

[0029] Fig. 9 for Figure 7 Schematic cross-sectional view along line IX-IX.

[0030] Fig.10 for Figure 1 A three-dimensional schematic diagram of the second connecting bracket.

[0031] Fig.11 for Figure 1 Schematic top view of the second connecting bracket.

[0032] Fig.12 for Fig.11 Schematic cross-sectional view along line XII-XII.

[0033] Fig.13 for Fig.11 Schematic cross-sectional view along line XIII-XIII. DETAILED DESCRIPTION

[0034] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0035] Please refer to Figures 1 to 3 The seat cross beam assembly provided in one embodiment of the present invention includes a seat cross beam 10, a first connecting bracket 20 for connecting the seat cross beam 10 and a door sill 40, and a second connecting bracket 30 for connecting the seat cross beam 10 and a central channel 50. The first connecting bracket 20 and the second connecting bracket 30 are fixed to two opposite ends of the seat cross beam 10, and are riveted to the seat cross beam 10 by rotary tapping. In addition, rotary tapping is also used to rivet the first connecting bracket 20 and the door sill 40, and the second connecting bracket 30 and the central channel 50.

[0036] It should be noted that, in the present embodiment, the seat cross beam 10 includes a first seat cross beam 11 for connecting with the front of the seat, and a second seat cross beam 12 for connecting with the rear of the seat, the first seat cross beam 11 and the second seat cross beam 12 are both extruded beams, and the first seat cross beam 11 and the second seat cross beam 12 are provided with a first connecting bracket 20 and a second connecting bracket 30 at two opposite ends. The seat cross beam assembly of the present invention is particularly suitable for a body structure in which the floor area of ​​the body-in-white is made of aluminum alloy.

[0037] like Figure 4 and Figure 5As shown, the seat cross beam 10 includes a cross beam top plate 13, a cross beam bottom plate 14, a cross beam side plate 15 connected to two opposite sides of the cross beam top plate 13 and the cross beam bottom plate 14, and a cross beam flange 16 extending horizontally outward from one end of the cross beam side plate 15 away from the cross beam top plate 13. From the cross section, the main part of the seat cross beam 10 is roughly an isosceles trapezoid, the cross beam top plate 13 and the cross beam bottom plate 14 are arranged horizontally, and the width of the cross beam top plate 13 is smaller than the width of the cross beam bottom plate 14, and the cross beam side plate 15 is connected to the cross beam top plate 13 and the cross beam bottom plate 14, and is inclined relative to the cross beam top plate 13 and the cross beam bottom plate 14. The cross beam top plate 13, the cross beam bottom plate 14 and the cross beam side plate 15 are connected to form a closed cavity, which can increase the strength of the seat cross beam 10 and improve the collision safety performance.

[0038] like Figure 6 and Figure 7 As shown, the first connecting bracket 20 includes a first connecting plate 21 for connecting with the seat cross beam 10, a second connecting plate 22 for connecting with the door sill 40, a first side plate 23 provided at two opposite sides of the first connecting plate 21, a first flange 24 extending outward from one end of the first side plate 23 away from the first connecting plate 21, and a second side plate 25 connected with the second connecting plate 22, the first side plate 23 and the first flange 24. In this embodiment, the first connecting plate 21 and the first flange 24 are arranged horizontally, the first side plate 23 is obliquely connected between the first connecting plate 21 and the first flange 24, and the second side plate 25 is obliquely connected between the first flange 24 and the second connecting plate 22. The first connecting plate 21 is used to overlap the seat cross beam 10, and the second connecting plate 22 is used to overlap the door sill 40.

[0039] Please read further Figure 8 , the first connecting plate 21 is a flat plate, and the second connecting plate 22 is inclined relative to the first connecting plate 21, and is slightly inclined upward from the first connecting plate 21. There is a height difference between the first connecting plate 21 and the second connecting plate 22. Specifically, the end of the second connecting plate 22 close to the first connecting plate 21 is higher than the end of the first connecting plate 21 close to the second connecting plate 22. The first connecting plate 21 and the second connecting plate 22 are connected by a first guide section 26. In this embodiment, the first guide section 26 is a transition arc. It is understandable that in other embodiments of the present invention, the first guide section 26 may also be a small inclined plate inclined relative to the first connecting plate 21 and the second connecting plate 22, that is, the first guide section 26 is an oblique chamfer connected between the first connecting plate 21 and the second connecting plate 22.

[0040] Please read further Fig. 9, the first flange 24 is a flat plate, the second connecting plate 22 is inclined relative to the first flange 24, and the second side plate 25 is obliquely connected between the first flange 24 and the second connecting plate 22. There is a height difference between the second connecting plate 22 and the second side plate 25. Specifically, the end of the second connecting plate 22 close to the second side plate 25 is higher than the end of the second side plate 25 close to the second connecting plate 22. The second connecting plate 22 and the second side plate 25 are connected by a second guide section 27. In this embodiment, the second guide section 27 is a transition arc. It can be understood that in other embodiments of the present invention, the second guide section 27 can also be a small inclined plate inclined relative to the second connecting plate 22 and the second side plate 25, that is, the second guide section 27 is an oblique chamfer connected between the second connecting plate 22 and the second side plate 25.

[0041] See also Fig.10 and Fig.11 The second connecting bracket 30 includes a third connecting plate 31 for connecting with the seat cross beam 10, a fourth connecting plate 32 for connecting with the middle channel 50, a third side plate 33 provided at two opposite sides of the third connecting plate 31, a second flange 34 extending outward from one end of the third side plate 33 away from the third connecting plate 31, and a fourth side plate 35 connected with the fourth connecting plate 32, the third side plate 33 and the second flange 34. In this embodiment, the third connecting plate 31, the fourth connecting plate 32 and the second flange 34 are arranged horizontally, the third side plate 33 is obliquely connected between the third connecting plate 31 and the second flange 34, and the fourth side plate 35 is obliquely connected between the second flange 34 and the fourth connecting plate 32. The third connecting plate 31 is used to overlap the seat cross beam 10, and the fourth connecting plate 32 is used to overlap the middle channel 50.

[0042] Please also read Fig.12 The third connecting plate 31 and the fourth connecting plate 32 are connected by the first connecting section 36. The first connecting section 36 includes a first flat section 36a, a third guide section 36b located between the first flat section 36a and the third connecting plate 31, and a fourth guide section 36c located between the first flat section 36a and the fourth connecting plate 32. There is a height difference between the first flat section 36a and the third connecting plate 31 and the fourth connecting plate 32. Specifically, the first flat section 36a is higher than the height of the third connecting plate 31 and the fourth connecting plate 32. The heights of the third connecting plate 31 and the fourth connecting plate 32 are equal. It can be understood that in other embodiments of the present invention, the heights of the third connecting plate 31 and the fourth connecting plate 32 may also be different. In this embodiment, the third guide section 36b and the fourth guide section 36c are both transition arcs, and the arc radii of the third guide section 36b and the fourth guide section 36c are equal. It can be understood that in other embodiments of the present invention, the third guide section 36b and the fourth guide section 36c may also be chamfered.

[0043] Please also read Fig.13 , the fourth connecting plate 32 and the second flange 34 are connected together by the fourth side plate 35 which is arranged obliquely. The fourth connecting plate 32 and the fourth side plate 35 are connected by the second connecting section 37. The second connecting section 37 includes a second flat plate section 37a, a fifth guide section 37b located between the second flat plate section 37a and the fourth side plate 35, and a sixth guide section 37c located between the second flat plate section 37a and the fourth connecting plate 32. There is a height difference between the second flat plate section 37a and the fourth connecting plate 32, specifically, the second flat plate section 37a is higher than the height of the fourth connecting plate 32. In the present embodiment, the fifth guide section 37b and the sixth guide section 37c are both transition arcs, but the arc radius of the fifth guide section 37b is greater than the arc radius of the sixth guide section 37c. It is understandable that in other embodiments of the present invention, the fifth guide section 37b and the sixth guide section 37c may also be chamfered.

[0044] See also Figure 2 and Figure 3 After the seat crossbeam assembly of the present invention is connected to the door sill 40 and the middle channel 50, the second connecting plate 22 is overlapped on the door sill 40 and fits with the corresponding surface of the door sill 40, the fourth connecting plate 32 is overlapped on the middle channel 50 and fits with the corresponding surface of the middle channel 50, the first guide section 26 and the second guide section 27 are just located above the gap between the seat crossbeam 10 and the door sill 40, the first connecting section 36 and the second connecting section 37 are just located above the gap between the seat crossbeam 10 and the middle channel 50, when the vehicle is subjected to a side collision, the first connecting bracket 20 and the second connecting bracket 30 are first crushed at each guide section, and then the seat crossbeam 10 contacts the door sill 40 and the middle channel 50, so that it can ensure that the vehicle has a good energy absorption and buffering effect during the side collision process and reduce the impact on the members, and it can also ensure that there is enough space in the passenger compartment to ensure the safety of the members.

[0045] It can be seen from the above structural description that the present invention has at least one of the following beneficial effects:

[0046] 1. The present invention configures a first connecting bracket and a second connecting bracket at both ends of the seat crossbeam as connecting pieces between the seat crossbeam and the door sill and the middle channel, so that the seat crossbeam assembly of the present invention can be applied to most aluminum alloy floor structures;

[0047] 2. The present invention adopts a structure in which a first connecting bracket and a second connecting bracket are arranged at both ends of the seat cross beam, which can increase the versatility of the seat cross beam and realize the platformization of the seat cross beam. When the vehicle model is changed, it is only necessary to adjust the structure of the connecting brackets on both sides according to the specific vehicle model, thereby achieving the purpose of cost reduction;

[0048] 3. The seat crossbeam assembly of the present invention can effectively reduce the impact on the occupants during a side collision and ensure the space of the passenger compartment, thereby achieving the purpose of safety.

[0049] 4. After a side collision, the traditional one-piece crossbeam usually needs to replace the entire seat crossbeam, while the present invention only needs to replace the connecting brackets on both sides, thereby achieving the purpose of convenient maintenance and reducing costs.

[0050] The present invention also provides a vehicle body, comprising the above-mentioned seat crossbeam assembly, door sill and central channel.

[0051] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] In this document, the terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than those listed and may also include additional elements not expressly listed.

[0053] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A seat crossbeam assembly, comprising a seat crossbeam (10), characterized in that: The seat crossbeam assembly further comprises a first connecting bracket (20) for connecting the seat crossbeam (10) and a door sill (40), and a second connecting bracket (30) for connecting the seat crossbeam (10) and a central channel (50), wherein the first connecting bracket (20) and the second connecting bracket (30) are fixed to two opposite ends of the seat crossbeam (10), and the seat crossbeam (10) comprises a first seat crossbeam (11) for connecting to a front portion of a seat, and a second seat crossbeam (12) for connecting to a rear portion of a seat, and the first connecting bracket (20) and the second connecting bracket (30) are both provided at two opposite ends of the first seat crossbeam (11) and the second seat crossbeam (12); The second connecting bracket (30) comprises a third connecting plate (31) for connecting with the seat cross beam (10), a fourth connecting plate (32) for connecting with the middle channel (50), a third side plate (33) provided at two opposite sides of the third connecting plate (31), a second flange (34) extending outward from one end of the third side plate (33) away from the third connecting plate (31), and a fourth side plate (35) connected with the fourth connecting plate (32), the third side plate (33) and the second flange (34); the third connecting plate (31) and the fourth connecting plate (32) are connected via a first connecting section (36); the fourth connecting plate (32) and the fourth side plate (35) are connected via a second connecting section (37); the first connecting section (36) and the second connecting section (37) are located above a gap formed between the seat cross beam (10) and the middle channel (50) when the seat cross beam (10) and the middle channel (50) are connected; The first connecting section (36) comprises a first flat section (36a), a third guide section (36b) located between the first flat section (36a) and the third connecting plate (31), and a fourth guide section (36c) located between the first flat section (36a) and the fourth connecting plate (32), wherein there is a height difference between the first flat section (36a) and the third connecting plate (31) and the fourth connecting plate (32), and when the vehicle is subjected to a side collision, the second connecting bracket (30) is crushed at the third guide section (36b) and the fourth guide section (36c).

2. The seat crossbar assembly according to claim 1, characterized in that: The first connecting bracket (20) comprises a first connecting plate (21) for connecting to the seat crossbeam (10), a second connecting plate (22) for connecting to the door sill (40), a first side plate (23) provided at two opposite sides of the first connecting plate (21), a first flange (24) extending outward from an end of the first side plate (23) away from the first connecting plate (21), and a second side plate (25) connected to the second connecting plate (22), the first side plate (23) and the first flange (24), wherein the first connecting plate (21) and the first side plate (23) are connected to each other. The two connecting plates (22) are connected via a first guide section (26), the second connecting plate (22) and the second side plate (25) are connected via a second guide section (27), there is a height difference between the first connecting plate (21) and the second connecting plate (22), and between the second connecting plate (22) and the second side plate (25), and the first guide section (26) and the second guide section (27) are located above a gap formed between the seat cross beam (10) and the door sill (40) when the seat cross beam (10) and the door sill (40) are connected.

3. The seat crossbar assembly according to claim 2, characterized in that: There is a height difference between the first connecting plate (21) and the second connecting plate (22), and between the second connecting plate (22) and the second side plate (25), and the first guiding section (26) and the second guiding section (27) are transition arcs or oblique chamfers.

4. The seat crossbar assembly according to claim 1, characterized in that: The third guide section (36b) and the fourth guide section (36c) are transition arcs or oblique chamfers.

5. The seat crossbar assembly according to claim 1, characterized in that: The second connecting section (37) includes a second flat section (37a), a fifth guide section (37b) located between the second flat section (37a) and the fourth side plate (35), and a sixth guide section (37c) located between the second flat section (37a) and the fourth connecting plate (32), and there is a height difference between the second flat section (37a) and the fourth connecting plate (32).

6. The seat crossbar assembly according to claim 5, characterized in that: The fifth guide section (37b) and the sixth guide section (37c) are transition arcs or oblique chamfers.

7. The seat crossbar assembly according to claim 1, characterized in that: The first connecting bracket (20) and the seat cross beam (10), as well as the second connecting bracket (30) and the seat cross beam (10), are both connected by rotary tapping and riveting.

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