Vehicle seat cross beam assembly and vehicle body structure

Abstract

The utility model discloses a vehicle seat cross beam assembly and a vehicle body structure, which comprise a seat cross beam body arranged on a front floor and a connecting plate arranged at the end part of the seat cross beam body, the connecting plate comprises an upper connecting plate and a lower connecting plate, wherein the upper connecting plate is arranged on the upper side of the seat cross beam body and used for being fixedly connected with a vehicle body threshold beam, and the lower connecting plate is arranged on the lower side of the seat cross beam body and used for being fixedly connected with the vehicle body threshold beam. The cross section of the seat cross beam body and the cross section of the lower connecting plate are each of an n-shaped structure, and the end top face, close to the end of the seat cross beam body, of the lower connecting plate inclines downwards to form a lower connecting plate inclined face. By improving the structure of the end part of the seat cross beam, the structural strength of the end part of the seat cross beam is enhanced, the full contact of the end surface of the seat cross beam and the inner side surface of the doorsill beam is ensured, the connecting strength of the seat mounting cross beam body and the doorsill is further enhanced, and the doorsill beam is prevented from being cut off.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle body structures, and particularly relates to a vehicle seat crossbeam assembly and a vehicle body structure. Background Art

[0002] With the continuous improvement of automotive crash safety regulations, the requirements for side pole impact in automotive crash safety have been added. As the main bearing structure for automotive crashes, the vehicle body structure has become an important factor affecting automotive crash safety. Among them, SPR riveting is usually used between the vehicle seat crossbeam and the sill beam. If the part thickness is too thick or the strength is too strong, SPR riveting will fail, affecting the body connection strength. If the part strength is too low or the thickness is too small, the crossbeam is prone to bending during a pole impact and cannot meet the requirements of side pole impact. In some vehicle body structure designs, the cross-section of the seat crossbeam is enlarged, and its top surface is designed to be higher than the top surface of the sill beam in the vehicle body height direction. However, in side pole impact tests for such structures, the end face of the seat crossbeam cannot fully contact the inner side of the sill beam. During a collision, the inner side of the sill beam will directly contact the two edges on the end face of the seat crossbeam, which will cause the seat crossbeam to cut into the sill, unable to meet the requirements of side pole impact and affecting the safety of the occupants.

[0003] Therefore, it is necessary to improve the existing seat crossbeam structure and the connection structure between the seat crossbeam and the sill beam to strengthen the structural strength of the end of the seat crossbeam and ensure that the end face of the seat crossbeam fully contacts the inner side of the sill beam, thereby strengthening the connection strength between the seat mounting crossbeam body and the sill and preventing the sill beam from being cut off. Summary of the Utility Model

[0004] In view of this, the utility model provides a vehicle seat crossbeam assembly and a vehicle body structure. By improving the structure of the end of the seat crossbeam, the structural strength of the end of the seat crossbeam is strengthened and the end face of the seat crossbeam is ensured to fully contact the inner side of the sill beam, thereby strengthening the connection strength between the seat mounting crossbeam body and the sill and preventing the sill beam from being cut off.

[0005] The vehicle seat crossbeam assembly provided by the utility model includes a seat crossbeam body disposed on the front floor and a connecting plate disposed at the end of the seat crossbeam body. The connecting plate includes an upper connecting plate disposed on the upper side of the seat crossbeam body and used for fixedly connecting with the vehicle body sill beam, and a lower connecting plate disposed on the lower side of the seat crossbeam body and used for fixedly connecting with the vehicle body sill beam. The cross-sections of the seat crossbeam body and the lower connecting plate are both in a "C" - shaped structure. The end top surface of the lower connecting plate is inclined downward near the end of the seat crossbeam body to form a lower connecting plate inclined surface.

[0006] Further, an inclined surface of the seat crossbeam body with the same structure as the inclined surface of the lower connecting plate is provided on the top surface of the end of the seat crossbeam body.

[0007] Furthermore, the top surface of the end of the seat beam body is flat and forms a cavity between it and the inclined surface of the lower connecting plate.

[0008] Furthermore, the top surface of the seat crossbeam body is provided with several reinforcing ribs along its length to enhance the structural strength of the seat crossbeam body.

[0009] A vehicle body structure includes two sill beams spaced apart and the aforementioned vehicle seat crossbeam assembly, wherein the left and right ends of the vehicle seat crossbeam assembly are respectively fixedly connected to the corresponding sill beams.

[0010] Furthermore, the end face of the lower connecting plate near the sill beam is flush with the end face of the seat crossbeam body near the sill beam, and both form a collapsible space between them and the sill beam.

[0011] Furthermore, one end of the upper connecting plate is welded and fixed to the seat crossbeam body, and the other end is fixedly connected to the sill beam using FDS. The upper side of the lower connecting plate is welded and fixed to the seat crossbeam body, and the lower side of the lower connecting plate is fixed to the sill beam using SPR riveting.

[0012] Furthermore, the sill beam includes an outer side plate and an inner side plate. After the outer side plate is connected to the inner side plate, a cavity is formed inside. A connecting rib for connecting the outer side plate and the inner side plate is provided in the cavity. The connecting rib includes an upper connecting rib and a lower connecting rib in the vehicle height direction. The upper connecting rib is located at the same height as the bottom surface of the seat crossbeam body.

[0013] Furthermore, the upper connecting rib has an undulating, zigzag shape in the width direction of the vehicle body.

[0014] Furthermore, a support plate is provided on the inner side of the inner side plate to support the bottom surface of the seat beam assembly.

[0015] The beneficial effects of this utility model are as follows: The vehicle seat crossbeam assembly and body structure provided by this utility model strengthen the structural strength of the seat crossbeam end by setting connecting plate structures on the upper and lower sides of the seat crossbeam end, and use the upper and lower connecting plates to connect and fix with the sill beam, thereby strengthening the connection strength between the seat mounting crossbeam body and the sill; at the same time, the lower connecting plate has a downward inclined surface on the top surface near the end of the sill beam, thereby ensuring that the end face of the seat crossbeam end can fully contact the inner side of the sill beam when a side pillar collision occurs, thus preventing the sill beam from being cut off. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a schematic diagram of the vehicle body structure in this utility model;

[0018] Figure 2 This is a top view of the vehicle body structure in this utility model;

[0019] Figure 3 for Figure 2 A cross-sectional view of one embodiment;

[0020] Figure 4 for Figure 3 Schematic diagram of the connection between the middle seat crossbeam and the lower connecting plate;

[0021] Figure 5 for Figure 2 Another embodiment of the AA cross-sectional view;

[0022] Figure 6 for Figure 5 Schematic diagram of the connection between the middle seat crossbeam and the lower connecting plate;

[0023] Figure 7 This is a schematic diagram of the sill beam in this utility model;

[0024] The attached diagram is labeled as follows: 1-Seat crossbeam body; 2-Upper connecting plate; 3-Lower connecting plate; 4-Sill beam; 5-Reinforcing rib; 6-Inclined surface of lower connecting plate; 7-Inclined surface of seat crossbeam body; 8-Outer side plate; 9-Inner side plate; 10-Upper connecting rib; 11-Lower connecting rib; 12-Rib I; 13-Rib II; 14-Rib III; 15-Support plate. Detailed Implementation

[0025] As shown in the figure, the vehicle seat crossbeam assembly provided by the present utility model includes a seat crossbeam body 1 disposed on the front floor and a connecting plate disposed at the end of the seat crossbeam body. The connecting plate includes an upper connecting plate 2 disposed on the upper side of the seat crossbeam body 1 and used for fixedly connecting with the vehicle body sill beam 4, and a lower connecting plate 3 disposed on the lower side of the seat crossbeam body 1 and used for fixedly connecting with the vehicle body sill beam 4. The cross-sections of the seat crossbeam body 1 and the lower connecting plate 3 are both in a "channel" shape structure. The end surface of the lower connecting plate 3 is inclined downward at the end near the end of the seat crossbeam body 1 to form a lower connecting plate inclined surface 6. The seat crossbeam body 1 is mainly fixedly connected with the vehicle body sill beam 4 through the connecting plate disposed at the end. The connecting plate includes an upper connecting plate 2 and a lower connecting plate 3 in the vehicle body height direction. Since the seat crossbeam body 1 is in a "channel" shape structure in the cross-section, the upper connecting plate 2 is mainly disposed on the top surface of the end of the seat crossbeam body 1 and used for connecting with the top surface of the sill beam, finally realizing the connection and fixation between the top surface of the seat crossbeam body 1 and the top surface of the sill beam. The shape of the upper connecting plate 2 is mainly affected by the height difference between the top surface of the seat crossbeam body 1 and the top surface of the sill beam. In this embodiment, since the top surface of the seat crossbeam body 1 and the top surface of the sill beam are approximately flush in the height direction, the upper connecting plate 2 is a flat plate structure. The lower connecting plate 3 is also designed to be in a "channel" shape structure in the cross-section, and the lower connecting plate 3 is disposed on the lower side of the seat crossbeam body 1 to strengthen the structure at the connection of the end of the seat crossbeam body 1. Affected by the structural shape of the seat crossbeam body 1 or the structural shape of the sill beam 4, the end surface of the end of the seat crossbeam body 1 may not be fully in contact with the inner side surface of the sill beam during a side pole impact, resulting in the sill beam being cut off. Therefore, the end surface of the lower connecting plate 3 is inclined downward at the end near the end of the seat crossbeam body 1 to form a lower connecting plate inclined surface 6, so that the end surface of the connecting plate inclined surface 6 can contact and bear force with the sill beam when a side pole impact occurs, avoiding the sill beam 4 from being cut off. The inclination angle of the connecting plate inclined surface 6 is determined according to the actual structural shape of the seat crossbeam body 1.

[0026] In this embodiment, a seat crossbeam body inclined surface 7 having the same structure as the lower connecting plate inclined surface 6 is disposed on the top surface of the end of the seat crossbeam body 1; combined Figure 5 with Figure 6 as shown, a seat crossbeam body inclined surface 7 having the same structure as the lower connecting plate inclined surface 6 is also disposed on the top surface of the end of the seat crossbeam body 1, and the connecting plate inclined surface 6 and the seat crossbeam body inclined surface 7 are in close contact. At this time, when the end of the seat crossbeam body 1 contacts the sill beam 4, the overall structural strength of the end is better. At the same time, this structure can also facilitate the welding operation between the seat crossbeam body 1 and the lower connecting plate 3 on the premise of meeting the use performance.

[0027] In this embodiment, the top surface of the end of the seat beam body 1 is flat and forms a cavity between it and the inclined surface 6 of the lower connecting plate; combined with Figure 3 and Figure 4 As shown, the top surface of the end of the seat beam body 1 is flat, thus forming a small cavity structure between the top surface of the end of the seat beam body 1 and the inclined surface 6 of the lower connecting plate. Although the welding layers are increased during the welding operation of the seat beam body 1 and the lower connecting plate 3, the newly formed cavity structure is more conducive to improving the side pillar impact strength performance of the vehicle body structure.

[0028] In this embodiment, the top surface of the seat beam body 1 is provided with a plurality of reinforcing ribs 5 distributed along its length to enhance the structural strength of the seat beam body; combined with Figure 2 As shown, in order to increase the strength of the seat crossbeam body 1, it is necessary to add reinforcing ribs 5 to the seat crossbeam body 1 to increase its strength. In this solution, due to the limited arrangement of parts, the reinforcing ribs 5 are not continuous, but the actual continuous effect is the best. When the seat crossbeam overlaps with the bottom floor, except for the necessary surface avoidance, no additional ribs are added to avoid bending and deformation on the step surface when the column hits.

[0029] This embodiment also discloses a vehicle body structure, including two spaced-apart sill beams 4 and the aforementioned vehicle seat crossbeam assembly. The left and right ends of the vehicle seat crossbeam assembly are respectively fixedly connected to the corresponding sill beams 4. By using the aforementioned vehicle seat crossbeam assembly between the two sill beams 4, the connection strength between the seat mounting crossbeam assembly and the sill beams 4 can be effectively improved, and the end face of the seat crossbeam assembly can be in full contact with the inner side of the sill beam when a side pole collision occurs, thus preventing the sill beams 4 from being cut off and further meeting the side pole collision requirements.

[0030] In this embodiment, the end face of the lower connecting plate 3 near the sill beam 4 is flush with the end face of the seat crossbeam body 1 near the sill beam 4, and both form a collapsible space between themselves and the sill beam 4; combined with Figure 5 and 7 As shown, the end face of the lower connecting plate 3 near the sill beam 4 and the end face of the seat crossbeam body 1 near the sill beam 4 need to be flush to ensure that when a side pillar collision occurs, the end of the seat crossbeam body 1 contacts the sill beam 4 simultaneously, avoiding a point from being subjected to force first and damaging the sill beam 4 or the seat crossbeam body 1; and a crumple space needs to be reserved between the end of the seat crossbeam body 1 and the sill beam 4 to provide a certain buffer to reduce the maximum damage that passengers may suffer.

[0031] In this embodiment, one end of the upper connecting plate 2 is welded and fixed to the seat crossbeam body 1, and the other end is fixedly connected to the sill beam 4 using FDS. The upper side of the lower connecting plate 3 is welded and fixed to the seat crossbeam body 1, and the lower side of the lower connecting plate 3 is fixed to the sill beam 4 using SPR riveting. Figure 1 and Figure 7 As shown, the upper connecting plate 2, the lower connecting plate 3, and the seat crossbeam body 1 are all fixedly connected by welding to form the vehicle seat crossbeam assembly. When the vehicle seat crossbeam assembly is connected and fixed to the sill beam 4, the upper connecting plate 2 and the sill beam 4 are mainly fixedly connected by FDS. The FDS connection has the advantages of single-sided connection process, which makes it possible to connect aluminum profiles, aluminum castings, and small holes. This is existing technology and will not be elaborated here. The lower connecting plate 3 and the sill beam 4 are mainly fixed by SPR riveting. SPR riveting is a process that can connect two or more layers of materials without pre-drilling or punching. It can connect aluminum parts, hybrid connections, combination connections, and emission-free adhesive connection elements. This is existing technology and will not be elaborated here.

[0032] In this embodiment, the sill beam 4 includes an outer side plate 8 and an inner side plate 9. After the outer side plate 8 and the inner side plate 9 are connected, a cavity is formed inside the cavity, and a connecting rib for connecting the outer side plate 8 and the inner side plate 9 is provided in the cavity. The connecting rib includes an upper connecting rib 10 and a lower connecting rib 11 in the vehicle height direction. The upper connecting rib 10 is located at the same height as the bottom surface of the seat crossbeam body 1. Figure 7 As shown, the sill beam 4 in this design is made of extruded aluminum and includes an outer side plate 8 and an inner side plate 9. After the outer side plate 8 and the inner side plate 9 are connected, a cavity is formed inside, and a connecting rib is provided in the cavity. In this way, when the vehicle is involved in a side collision, the collision force can be transmitted along the outer side plate 8, the inner side plate 9 and the connecting rib of the sill beam 4, absorbing and dispersing the collision force. When arranging the ribs inside, in order to facilitate the transmission of the force to the seat crossbeam body 1 during a collision, the upper connecting rib 10 is aligned with the bottom surface of the seat crossbeam body 1, so that the bottom surfaces of the two are at the same height.

[0033] In this embodiment, the upper connecting rib 10 has an undulating zigzag shape in the vehicle width direction; wherein the upper connecting rib 10 is composed of rib I 12, rib II 13 and rib III 14 arranged sequentially from the outside to the inside, and rib I 12, rib II 13 and rib III 14 are not arranged horizontally, but diagonally, thereby increasing the bearing capacity of the sill beam 4 when the pillar hits. Ribs I 12 and rib II 13 are arranged in a V-shape, while rib II 13 and rib III 14 are arranged in an inverted V-shape, ultimately making the upper connecting rib 10 have an undulating zigzag shape in the vehicle width direction.

[0034] In this embodiment, a support plate 15 supporting the bottom surface of the seat beam assembly is provided on the inner side of the inner side plate 9. By providing the support plate 15 on the inner side of the inner side plate 9, support can be provided for the seat beam body 1, and the sill beam 4 can be fixedly connected to the lower connecting plate 3, thereby making the connection between the end of the vehicle seat beam assembly and the sill beam 4 more secure.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A vehicle seat crossbeam assembly, characterized in that: The device includes a seat crossbeam body disposed on the front floor and a connecting plate disposed at the end of the seat crossbeam body. The connecting plate includes an upper connecting plate disposed on the upper side of the seat crossbeam body and used for fixed connection with the vehicle sill beam, and a lower connecting plate disposed on the lower side of the seat crossbeam body and used for fixed connection with the vehicle sill beam. The cross-sections of the seat crossbeam body and the lower connecting plate are both U-shaped. The lower connecting plate has a downward inclined surface at the top end near the end of the seat crossbeam body.

2. The vehicle seat crossbeam assembly according to claim 1, characterized in that: The top surface of the end of the seat crossbeam body is provided with an inclined surface of the seat crossbeam body that has the same structure as the inclined surface of the lower connecting plate.

3. The vehicle seat crossbeam assembly according to claim 1, characterized in that: The top surface of the end of the seat beam body is flat and forms a cavity between it and the inclined surface of the lower connecting plate.

4. The vehicle seat crossbeam assembly according to claim 1, characterized in that: The top surface of the seat crossbeam body has several reinforcing ribs distributed along its length to enhance the structural strength of the seat crossbeam body.

5. A vehicle body structure, characterized in that: The vehicle seat crossbeam assembly includes two spaced-apart sill beams and any one of claims 1-4, wherein the left and right ends of the vehicle seat crossbeam assembly are respectively fixedly connected to the corresponding sill beams.

6. The vehicle body structure according to claim 5, characterized in that: One end of the upper connecting plate is welded and fixed to the seat crossbeam body, and the other end is fixedly connected to the sill beam using FDS. The upper side of the lower connecting plate is welded and fixed to the seat crossbeam body, and the lower side of the lower connecting plate is fixed to the sill beam using SPR riveting.

7. The vehicle body structure according to claim 5, characterized in that: The end face of the lower connecting plate near the sill beam is flush with the end face of the seat crossbeam body near the sill beam, and both form a collapsible space between them and the sill beam.

8. The vehicle body structure according to claim 5, characterized in that: The sill beam includes an outer side plate and an inner side plate. After the outer side plate is connected to the inner side plate, a cavity is formed inside. A connecting rib for connecting the outer side plate and the inner side plate is provided in the cavity. The connecting rib includes an upper connecting rib and a lower connecting rib in the vehicle height direction. The upper connecting rib is located at the same height as the bottom surface of the seat crossbeam body.

9. The vehicle body structure according to claim 8, characterized in that: The upper connecting rib has an undulating, zigzag shape in the width direction of the vehicle body.

10. The vehicle body structure according to claim 8, characterized in that: A support plate is provided on the inner side of the inner side plate to support the bottom surface of the seat beam assembly.

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