Cross member assembly for second row seats of vehicle and vehicle having the same

Abstract

The present invention relates to a crossbeam assembly for a second row of seats in a vehicle and a vehicle having the same. The crossbeam assembly comprises: a crossbeam body, comprising a vertical wall extending in the transverse direction of the vehicle, a top wall extending from the upper edge of the vertical wall toward the rear of the vehicle, and a bottom wall extending from the lower edge of the vertical wall toward the front of the vehicle, the bottom wall being configured to be fixed to the rear floor frame of the vehicle, and a plurality of seat mounting portions spaced apart from each other in the transverse direction and suitable for assembling the second row of seats being provided on the top wall; and a first reinforcement bracket and a second reinforcement bracket, the first reinforcement bracket and the second reinforcement bracket being located below each seat mounting portion and distributed on the left and right sides of each seat mounting portion, and the first reinforcement bracket and the second reinforcement bracket being configured to form a fixed connection with the crossbeam body and the rear floor frame, respectively. Through the crossbeam assembly, the vehicle of the present invention improves the lightweight degree and space utilization of the vehicle on the basis of meeting the installation strength and anti-diving function of the second row of seats.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a crossbeam assembly for two rows of seats in a vehicle and a vehicle having the same. Background Art

[0002] With the continuous improvement of living standards, automobiles have become one of people's most important means of transportation. Automobiles are generally defined as non-rail-borne vehicles with four or more wheels that are powered by a motor. Their primary functions include transportation, passenger transport, and mobility. Automobiles not only provide a safe, convenient, and comfortable driving experience, but also optimize industrial structures, boost economic development, and transform people's lifestyles.

[0003] Automobiles in the prior art generally include front seats and second rows of seats (or "rear seats"). When assembling the second row of seats, a seat crossbeam extending in the transverse direction of the vehicle body (i.e., the left and right direction of the vehicle body) is usually provided on the rear floor frame of the vehicle. In order to meet the design requirements of the dive amount, a reinforcing beam is generally provided on the seat crossbeam to increase the strength of the seat crossbeam. For example, Chinese utility model patent CN205589020U discloses a second-row seat mounting structure for an automobile. The mounting structure includes components such as a seat crossbeam and an intermediate reinforcing beam. Both the seat crossbeam and the intermediate reinforcing beam are U-shaped beams, and the intermediate reinforcing beam is arranged inside the middle section of the seat crossbeam and is consistent with the opening direction of the seat crossbeam. The seat crossbeam and the intermediate reinforcing beam are fixed to the rear floor above the vehicle body crossbeam by welding overlaps provided at the opening. Left and right reinforcing plates are also provided inside the two ends of the seat crossbeam to further increase the strength of the seat crossbeam.

[0004] However, the seat crossbeam and rear floor of the second-row seat mounting structure form a closed structure. The center reinforcement beam, left reinforcement plate, and right reinforcement plate are all arranged within this closed structure. This results in a heavy overall weight of the mounting structure, which fails to meet lightweight requirements. Furthermore, the closed structure takes up too much space, resulting in reduced space utilization.

[0005] This field requires a new technical solution to solve the above problems. Summary of the Invention

[0006] To address the aforementioned problems in the prior art, namely, the low lightweight and low space utilization of conventional crossbeam assemblies for second-row seats in vehicles, the present invention provides a crossbeam assembly for second-row seats in vehicles. The crossbeam assembly comprises: a crossbeam body including a vertical wall extending in the transverse direction of the vehicle, a top wall extending from an upper edge of the vertical wall toward the rear of the vehicle, and a bottom wall extending from a lower edge of the vertical wall toward the front of the vehicle, the bottom wall being configured to be fixed to a rear floor frame of the vehicle, the top wall being provided with a plurality of seat mounting portions spaced apart from each other in the transverse direction and suitable for mounting the second-row seats; and a first reinforcement bracket and a second reinforcement bracket, the first reinforcement bracket and the second reinforcement bracket being located below each seat mounting portion and disposed on the left and right sides of each seat mounting portion, and being configured to form a fixed connection with the crossbeam body and the rear floor frame, respectively.

[0007] The crossbeam assembly for a second-row seat in a vehicle according to the present invention comprises a crossbeam body, a first reinforcement bracket, and a second reinforcement bracket. The crossbeam body comprises a vertical wall extending in the transverse direction of the vehicle (i.e., the left-right direction of the vehicle body), a top wall extending from the upper edge of the vertical wall toward the rear of the vehicle, and a bottom wall extending from the lower edge of the vertical wall toward the front of the vehicle. The vertical wall, top wall, and bottom wall together form a roughly Z-shaped cross-section of the crossbeam body. The bottom wall is configured to be fixed to the rear floor frame of the vehicle, and the top wall is provided with a plurality of seat mounting portions spaced laterally and suitable for mounting the second-row seat. When the crossbeam body is fixed to the rear floor frame of the vehicle, the top wall, vertical wall, and rear floor frame together define a substantially semi-enclosed cavity opening toward the rear of the vehicle. By utilizing the space within this semi-enclosed cavity (for example, to accommodate components such as the vehicle's cooling module and speed limiter module), the space efficiency of the crossbeam assembly according to the present invention is significantly improved. Furthermore, the semi-enclosed cavity can also play a certain protective role for the components arranged inside it. Furthermore, the semi-enclosed cavity is configured to open toward the rear of the vehicle, which can make full use of the rear space of the vehicle under the second row of seats. Furthermore, the first reinforcement bracket and the second reinforcement bracket are located below each seat mounting portion and are distributed on the left and right sides of each seat mounting portion, and the first reinforcement bracket and the second reinforcement bracket are configured to form a fixed connection with the crossbeam body and the rear floor frame respectively. By arranging the first reinforcement bracket and the second reinforcement bracket distributed on the left and right sides of the seat mounting portion below each seat mounting portion, not only can the strength of each seat mounting portion be improved to ensure that it meets the design requirements of the diving capacity, but also the strength of the entire crossbeam body can be increased accordingly. At the same time, the use of the first reinforcement bracket and the second reinforcement bracket to replace the reinforcement beam (or reinforcement plate) in the prior art significantly reduces the weight of the crossbeam assembly, thereby achieving the lightweight requirement.

[0008] In the preferred technical solution of the crossbeam assembly for a second-row seat in a vehicle, each seat-mounting portion is provided with a seat-mounting hole, and the first and second reinforcement brackets are arranged symmetrically with respect to the vertical centerline of the corresponding seat-mounting hole. Providing seat-mounting holes on each seat-mounting portion facilitates installation of the second-row seat. Furthermore, the symmetrical arrangement of the first and second reinforcement brackets with respect to the vertical centerline of the corresponding seat-mounting holes further simplifies their structure and provides more uniform force distribution.

[0009] In the preferred technical solution of the crossbeam assembly for a second-row seat in a vehicle, each seat-mounting hole is a rectangular hole extending in the transverse direction, and opposing first reinforcement protrusions are provided on each of the two long sides of the rectangular hole. This arrangement enhances the strength near the seat-mounting hole, ensuring that the second-row seat is stably and securely fixed to the crossbeam body.

[0010] In the preferred technical solution of the crossbeam assembly for the second row of seats in a vehicle, the first and second reinforcing brackets are arranged in a figure eight shape relative to the vertical centerline. This arrangement can make the structures of the first and second reinforcing brackets more stable and the force distribution more uniform.

[0011] In the preferred technical solution of the crossbeam assembly for a second-row seat in a vehicle, each of the first and second reinforcing brackets includes: a plate body; a first transverse fixing portion extending from an upper portion of the plate body toward a first side of the plate body and configured to be fixed to the lower surface of the corresponding seat mounting portion; a second transverse fixing portion extending from a lower portion of the plate body toward a second side of the plate body opposite the first side and configured to be fixed to the rear floor frame; and a third vertical fixing portion extending from a vertical edge of the plate body toward the second side and configured to be fixed to the rear side surface of the vertical wall. Through the above-described arrangement, each of the first and second reinforcing brackets can form a secure and stable fixed connection with the crossbeam body and the rear floor frame, respectively.

[0012] In the preferred technical solution of the cross member assembly for a second-row seat in a vehicle, each of the first and second reinforcing brackets further includes a vertical flange formed on the other vertical edge of the plate and extending toward the first side. The provision of the vertical flange further enhances the strength of the first and second reinforcing brackets.

[0013] In the preferred technical solution of the cross member assembly for a second row of vehicle seats, the plate body is formed with first and second positioning holes spaced vertically apart from each other. Providing the first and second positioning holes spaced vertically apart on the plate body facilitates positioning during assembly, thereby improving assembly efficiency and accuracy.

[0014] In the preferred technical solution of the above-mentioned crossbeam assembly for a second row of vehicle seats, weight-reducing openings are provided on the top wall, one on each left and right side of each seat mounting portion. This arrangement can reduce the weight of the crossbeam body and improve the lightweightness of the crossbeam assembly.

[0015] In the preferred technical solution of the crossbeam assembly for a second-row seat in a vehicle, each weight-reducing opening is configured as a trumpet-shaped opening that opens toward the rear of the vehicle. This trumpet-shaped configuration not only increases the area of ​​the weight-reducing opening, thereby improving the lightweighting of the crossbeam assembly, but also allows each seat mounting portion to form a roughly trapezoidal shape, thereby enhancing its structural stability.

[0016] In the preferred embodiment of the cross member assembly for a second-row seat in a vehicle, the top wall includes a support protrusion located at the bottom of each of the bell-shaped openings and extending vertically upward. This arrangement not only improves the rigidity and strength of the top wall and prevents deformation at the bell-shaped openings, but also allows the vertically extending support protrusions to support other components (e.g., the vehicle's carpet).

[0017] In the preferred technical solution of the crossbeam assembly for a second-row seat in a vehicle, first carpet mounting portions are provided at the left and right ends of the top wall, a second carpet mounting portion is formed between each two adjacent weight-reducing openings, and carpet mounting holes are provided on both the first and second carpet mounting portions. This arrangement allows the vehicle's carpet to be conveniently secured to the crossbeam body, thereby improving the utilization of the crossbeam body.

[0018] In the preferred technical solution of the above-mentioned crossbeam assembly for the second row of seats in a vehicle, a plurality of weight-reducing holes are formed on the vertical wall, each of which is located below the corresponding seat mounting portion and between the first reinforcement bracket and the second reinforcement bracket. Through the above-mentioned arrangement, the weight of the crossbeam body can be further reduced, the lightweight degree of the crossbeam assembly can be improved, and the material consumption can be reduced, thereby reducing manufacturing costs. In addition, the location of each weight-reducing hole below the corresponding seat mounting portion can also make the structure of the crossbeam body more regular and facilitate processing and manufacturing. Furthermore, each weight-reducing hole is located between the first reinforcement bracket and the second reinforcement bracket, so that the first reinforcement bracket and the second reinforcement bracket can be used to enhance the rigidity and strength of the vertical wall near the weight-reducing hole to prevent its deformation.

[0019] In the preferred technical solution of the crossbeam assembly for a second-row seat in a vehicle, the vertical wall is further provided with a plurality of second reinforcing protrusions spaced apart in the transverse direction and extending perpendicularly rearward from the vertical wall. Providing multiple second reinforcing protrusions on the vertical wall further enhances the rigidity and strength of the crossbeam body, thereby extending its service life.

[0020] In the preferred technical solution of the cross member assembly for a second-row seat in a vehicle, third and fourth positioning holes are provided on the left and right ends of the vertical wall, respectively. Providing the third and fourth positioning holes on the vertical wall facilitates positioning during assembly, thereby improving assembly efficiency and precision.

[0021] In the preferred technical solution for the crossbeam assembly for a second-row seat in a vehicle, the multiple seat mounting portions include a central seat mounting portion and left and right seat mounting portions symmetrically located to the left and right of the central seat mounting portion. Furthermore, the first and second reinforcing brackets located below the left seat mounting portion are interchangeable with the first and second reinforcing brackets located below the right seat mounting portion. The first and second reinforcing brackets below the left seat mounting portion are configured identically to the first and second reinforcing brackets below the right seat mounting portion, respectively, and are therefore interchangeable. This configuration significantly reduces the design and production costs of the reinforcing brackets. Furthermore, during installation, there is no need to specifically identify the reinforcing brackets for the left or right seat mounting portion, thus simplifying the assembly process.

[0022] To address the aforementioned existing problems, namely, the low lightweight and low space utilization of conventional crossbeam assemblies for second-row vehicle seats, the present invention provides a vehicle comprising: a rear floor frame; two rows of seats; and a crossbeam assembly for second-row vehicle seats according to any of the above items, wherein the crossbeam assembly is secured to the rear floor frame, and the second-row seats are secured to the crossbeam assembly. By employing any of the above crossbeam assemblies, the vehicle of the present invention improves its lightweight and space utilization, while meeting the requirements for mounting strength and anti-diving for the second-row seats, thereby improving its power performance, thereby reducing energy consumption and increasing cruising range.

[0023] Option 1:

[0024] 1. A crossbeam assembly for a second row of seats in a vehicle, characterized in that the crossbeam assembly comprises:

[0025] a cross member body comprising a vertical wall extending in a transverse direction of the vehicle, a top wall extending from an upper edge of the vertical wall toward a rear portion of the vehicle, and a bottom wall extending from a lower edge of the vertical wall toward a front portion of the vehicle, the bottom wall being configured to be fixed to a rear floor frame of the vehicle, the top wall being provided with a plurality of seat mounting portions spaced apart from each other in the transverse direction and adapted to mount the second row of seats; and

[0026] A first reinforcement bracket and a second reinforcement bracket, wherein the first reinforcement bracket and the second reinforcement bracket are located below each of the seat mounting portions and are distributed on the left and right sides of each of the seat mounting portions, and the first reinforcement bracket and the second reinforcement bracket are configured to form a fixed connection with the crossbeam body and the rear floor frame respectively.

[0027] Option 2:

[0028] 2. The crossbeam assembly for a second row of seats in a vehicle according to Scheme 1 is characterized in that a seat mounting hole is provided on each of the seat mounting portions, and the first reinforcement bracket and the second reinforcement bracket are arranged to be symmetrical with respect to the vertical center line of the corresponding seat mounting hole.

[0029] Option 3

[0030] 3. The crossbeam assembly for the second row of seats in a vehicle according to Scheme 2 is characterized in that each of the seat mounting holes is a rectangular hole extending in the transverse direction, and first reinforcing protrusions opposite to each other are respectively provided on the two long sides of the rectangular hole.

[0031] Option 4:

[0032] 4. The crossbeam assembly for a second row of seats in a vehicle according to Option 2 is characterized in that the first reinforcement bracket and the second reinforcement bracket are arranged in an eight-shape relative to the vertical center line.

[0033] Option 5:

[0034] 5. The cross member assembly for a second row of seats for a vehicle according to solution 4, wherein each of the first reinforcement bracket and the second reinforcement bracket comprises:

[0035] plate body;

[0036] a first transverse fixing portion extending from an upper portion of the plate body toward a first side of the plate body and configured to be fixed to a lower surface of a corresponding seat mounting portion;

[0037] a second transverse fixing portion extending from a lower portion of the plate body toward a second side of the plate body opposite to the first side and configured to be fixed to the rear floor frame; and

[0038] A third vertical fixing portion extends from a vertical edge of the plate body toward the second side and is configured to be fixed on a rear side surface of the vertical wall.

[0039] Option 6:

[0040] 6. The cross member assembly for a second row of seats in a vehicle according to solution 5, wherein each of the first reinforcement bracket and the second reinforcement bracket further comprises:

[0041] A vertical flange is formed on the other vertical edge of the plate body and extends toward the first side.

[0042] Option 7:

[0043] 7. The crossbeam assembly for a second row of seats in a vehicle according to solution 5 is characterized in that a first positioning hole and a second positioning hole spaced apart from each other in the vertical direction are formed on the plate body.

[0044] Option 8:

[0045] 8. The crossbeam assembly for a second row of seats in a vehicle according to Solution 1 is characterized in that weight-reducing openings are provided on the top wall, respectively located on the left and right sides of each seat mounting portion.

[0046] Option 9:

[0047] 9. The cross member assembly for a second row of seats in a vehicle according to solution 8, wherein each of the weight-reducing openings is configured as a trumpet opening toward the rear of the vehicle.

[0048] Option 10:

[0049] 10. The crossbeam assembly for a second row of seats in a vehicle according to Solution 9 is characterized in that a supporting protrusion is formed on the top wall and is located at the bottom of each of the flared mouths and extends vertically upward.

[0050] Option 11:

[0051] 11. The crossbeam assembly for the second row of seats in a vehicle according to Scheme 8 is characterized in that a first carpet mounting portion is provided at the left and right ends of the top wall, a second carpet mounting portion is formed between every two adjacent weight-reducing openings, and carpet mounting holes are provided on both the first carpet mounting portion and the second carpet mounting portion.

[0052] Option 12:

[0053] 12. The crossbeam assembly for the second row of seats in a vehicle according to Scheme 1 is characterized in that a plurality of weight-reducing holes are formed on the vertical wall, each of the weight-reducing holes is located below the corresponding seat mounting portion and between the first reinforcement bracket and the second reinforcement bracket.

[0054] Option 13:

[0055] 13. The crossbeam assembly for a second row of seats in a vehicle according to Option 1 is characterized in that a plurality of second reinforcing protrusions are further provided on the vertical wall, which are spaced apart from each other in the transverse direction and extend vertically rearward from the vertical wall.

[0056] Option 14:

[0057] 14. The crossbeam assembly for a second row of seats in a vehicle according to Solution 1 is characterized in that a third positioning hole and a fourth positioning hole are respectively provided on the left and right ends of the vertical wall.

[0058] Option 15:

[0059] 15. The crossbeam assembly for a second row of seats in a vehicle according to Scheme 1 is characterized in that the multiple seat mounting parts include a central seat mounting part and a left seat mounting part and a right seat mounting part symmetrically distributed on the left and right sides of the central seat mounting part, and the first reinforcement bracket and the second reinforcement bracket located below the left seat mounting part can be interchangeable with the first reinforcement bracket and the second reinforcement bracket located below the right seat mounting part.

[0060] Option 16:

[0061] 16. A vehicle, characterized in that the vehicle comprises:

[0062] rear floor frame;

[0063] Second row seats; and

[0064] According to the crossbeam assembly for the second row of seats for a vehicle as described in any one of Schemes 1 to 15, the crossbeam assembly is fixed to the rear floor frame, and the second row of seats is fixed to the crossbeam assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0066] Figure 1 This is a schematic structural diagram of an embodiment of the present invention in which a crossbeam assembly for a second row of seats in a vehicle is assembled on a rear floor frame;

[0067] Figure 21 is a schematic structural diagram of an embodiment of a crossbeam assembly for a second row of seats in a vehicle according to the present invention;

[0068] Figure 3 This is a first structural schematic diagram of an embodiment of a crossbeam body in a crossbeam assembly for a second row of seats in a vehicle according to the present invention;

[0069] Figure 4 2 is a second structural schematic diagram of an embodiment of a crossbeam body in a crossbeam assembly for a second row of seats in a vehicle according to the present invention;

[0070] Figure 5 yes Figure 4 A partial enlarged view of section A of an embodiment of a left seat mounting portion of a cross member assembly for a second row of seats in a vehicle according to the present invention;

[0071] Figure 6 It is a structural schematic diagram of an embodiment of the first reinforcing bracket in a crossbeam assembly for a second row of seats in a vehicle according to the present invention.

[0072] List of reference numerals:

[0073] 1. Beam assembly; 10. Beam body; 11. Vertical wall; 111. Upper edge; 112. Lower edge; 113. Rear side; 114. Weight reduction hole; 114a. First weight reduction hole; 114b. Second weight reduction hole; 114c. Third weight reduction hole; 115. Second reinforcement protrusion; 116a. Third positioning hole; 116b. Fourth positioning hole; 12. Top wall; 121. Seat mounting portion; 121a. Left seat mounting portion; 121b. Center seat mounting portion; 121c. Right seat mounting portion; 1211. Seat mounting hole; 12111. Rectangular hole; 1212. First reinforcement protrusion; 122. Weight reduction opening; 1221. Bell mouth; 123. Support protrusion; 124. First Carpet mounting portion; 125, second carpet mounting portion; 1251, carpet mounting hole; 13, bottom wall; 131, first end; 132, second end; 133, main body; 20a, first reinforcing bracket; 20b, second reinforcing bracket; 21, plate; 211, first side; 212, second side; 213, first vertical edge; 214, second vertical edge; 215, first positioning hole; 216, second positioning hole; 217, third reinforcing protrusion; 22, first horizontal fixing portion; 23, second horizontal fixing portion; 231, fixing hole; 24, first vertical fixing portion; 25, vertical flange; 2, rear floor frame; 200, crossbeam; 210, first longitudinal beam; 220, second longitudinal beam. DETAILED DESCRIPTION

[0074] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0075] It should be noted that in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These terms are used solely for ease of description and are not intended to indicate or imply that the device or component described must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0076] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0077] In order to solve the technical problems in the prior art of low lightweight and low space utilization of a crossbeam assembly for a second row of seats in a vehicle, the present invention provides a crossbeam assembly 1 for a second row of seats in a vehicle. The crossbeam assembly 1 includes: a crossbeam body 10, the crossbeam body 10 includes a vertical wall 11 extending in the transverse direction of the vehicle, a top wall 12 extending from the upper edge 111 of the vertical wall 11 toward the rear of the vehicle, and a bottom wall 13 extending from the lower edge 111 of the vertical wall 11 toward the front of the vehicle, the bottom wall 13 is configured to be fixed to the rear floor frame 2 of the vehicle, and a plurality of seat mounting portions 121 spaced apart from each other in the transverse direction and suitable for assembling two rows of seats are provided on the top wall 12; and a first reinforcement bracket 20a and a second reinforcement bracket 20b, the first reinforcement bracket 20a and the second reinforcement bracket 20b are located below each seat mounting portion 121 and distributed on the left and right sides of each seat mounting portion 121, and the first reinforcement bracket 20a and the second reinforcement bracket 20b are configured to form a fixed connection with the crossbeam body 10 and the rear floor frame 2, respectively.

[0078] In this document, unless expressly stated otherwise, the term “longitudinal” refers to the front-to-rear direction of a vehicle, the term “lateral” refers to the left-to-right direction of a vehicle, and the term “vertical” refers to the up-down direction of a vehicle.

[0079] In one or more embodiments, the vehicle of the present invention (not shown in the figure) is a pure electric vehicle. Alternatively, the vehicle may also be a fuel vehicle, a hybrid vehicle, or other suitable vehicle. The vehicle includes but is not limited to components such as the front seats, the second row of seats, the front floor frame, the rear floor frame 2, and the crossbeam assembly 1. The front seats are arranged at the front of the vehicle body and are fixed to the front floor frame. The second row of seats are fixed to the crossbeam assembly 1, and the crossbeam assembly 1 is fixed to the rear floor frame 2 (such as Figure 1 shown).

[0080] Figure 1 This is a schematic structural diagram of an embodiment of the present invention in which a crossbeam assembly for a second row of seats in a vehicle is assembled on a rear floor frame. Figure 1 As shown, in one or more embodiments, the cross member assembly 1 for a second-row seat in a vehicle of the present invention is secured to the vehicle's rear floor frame 2. Rear floor frame 2 includes a cross member 200 extending transversely of the vehicle, and first and second longitudinal members 210, 220 extending from the left and right ends of cross member 200 toward the rear of the vehicle. Cross member assembly 1 is secured to cross member 200 of rear floor frame 2 and positioned between first and second longitudinal members 210, 220.

[0081] Figure 2 Schematic diagram of the structure of an embodiment of the present invention for a crossbeam assembly of a second row of seats in a vehicle. Figure 2 As shown, in one or more embodiments, the crossbeam assembly 1 includes a crossbeam body 10, three sets of first reinforcement brackets 20a and second reinforcement brackets 20b fixed on the crossbeam body 10. Figure 1 The crossbeam body 10 is fixed to the crossbeam 200, and each set of first and second reinforcing brackets 20a, 20b is also fixed to the crossbeam 200, giving the crossbeam body 10 excellent rigidity and strength. By using the first and second reinforcing brackets 20a, 20b, rather than reinforcing beams or plates to reinforce the crossbeam body 10, the weight of the reinforcement components can be reduced while still meeting rigidity and strength requirements, thereby improving the lightweighting of the crossbeam assembly 1.

[0082] Figure 3 This is a first structural schematic diagram of an embodiment of a crossbeam body in a crossbeam assembly for a second row of seats in a vehicle according to the present invention; Figure 4 This is a second structural diagram of an embodiment of the crossbeam body in the crossbeam assembly for the second row of seats in a vehicle according to the present invention. Figure 3 and Figure 4As shown, in one or more embodiments, the crossbeam body 10 includes a vertical wall 11, a top wall 12 and a bottom wall 13. The crossbeam body 10 can be formed in one piece by a casting process using galvanized steel or other suitable metal materials. The vertical wall 11 is configured to extend in the transverse direction of the vehicle, the top wall 12 extends from the upper edge 111 of the vertical wall 11 toward the rear of the vehicle, and the bottom wall 13 extends from the lower edge 112 of the vertical wall 12 toward the front of the vehicle. In one or more embodiments, the bottom wall 13 is fixed to the crossbeam 200 of the rear floor frame 2 by welding, so that a firm and stable fixed connection is formed between the crossbeam body 10 and the crossbeam 200. Continue to see Figure 1 When the crossbeam body 10 is fixed to the rear floor frame 2 of the vehicle, the top wall 12, the vertical wall 11, and the rear floor frame 2 of the crossbeam body 10 together form a semi-enclosed cavity (not shown in the figure) with an opening toward the rear of the vehicle. Compared with the closed structure in the prior art, the crossbeam assembly 1 of the present invention can utilize the space of the above-mentioned semi-enclosed cavity to arrange components such as the vehicle's cooling module and speed limit module, thereby improving space utilization. Furthermore, the semi-enclosed cavity can also play a certain protective role for the components arranged therein. Furthermore, the semi-enclosed cavity is configured to open toward the rear of the vehicle, which can make full use of the rear space of the vehicle under the second row of seats.

[0083] Continue to see Figure 3 and Figure 4In one or more embodiments, the vertical wall 11 includes a vertical wall body (not shown) extending generally in the vertical direction of the vehicle (i.e., the up-down direction of the vehicle). In one or more embodiments, a third positioning hole 116a and a fourth positioning hole 116b are provided on the left and right sides of the vertical wall 11, respectively, to facilitate assembly positioning and improve assembly efficiency. In one or more embodiments, three lightening holes 114 are further provided on the vertical wall 11, spaced laterally from one another. These are a first lightening hole 114a, a second lightening hole 114b, and a third lightening hole 114c. In one or more embodiments, the first and third lightening holes 114a, 114c are rectangular holes, and the second lightening hole 114b is a trapezoidal hole. This gives the vertical wall 11 a regular and symmetrical structure, facilitating machining. Alternatively, the number of lightening holes 114 may be set to any other suitable number, greater or less than three. Alternatively, each lightening hole 114 may be square, circular, or other suitable shape. The provision of the weight-reducing holes 114 not only reduces the weight of the crossbeam body 10, enhancing the lightweightness of the crossbeam assembly 1, but also reduces material usage and manufacturing costs. In one or more embodiments, the vertical wall 11 is further provided with a plurality of second reinforcing protrusions 115 spaced laterally from one another and extending vertically rearward from the vertical wall 11. The provision of the second reinforcing protrusions 115 further enhances the rigidity and strength of the vertical wall 11, thereby extending its service life. It is understood that the number and placement of the second reinforcing protrusions 115 can be adjusted based on actual needs.

[0084] Continue to see Figure 3 and Figure 4 In one or more embodiments, the top wall 12 has three seat mounting portions 121 spaced laterally from one another, namely, a left seat mounting portion 121a, a center seat mounting portion 121b, and a right seat mounting portion 121c. Each weight-reducing hole 114 is located below a corresponding seat mounting portion 121. Alternatively, the number of seat mounting portions 121 may be set to another suitable number, greater or less than three, such as two or four. Each seat mounting portion 121 has a generally trapezoidal shape, providing a stable structure. Each seat mounting portion 121 is provided with seat mounting holes 1211 for mounting the second row of seats. Figure 5 yes Figure 4 The figure shows a partial enlarged view of the A part of the embodiment of the left seat mounting portion in the cross beam assembly of the second row of seats in a vehicle of the present invention. Figure 5As shown, in one or more embodiments, each seat mounting hole 1211 is a rectangular hole 12111. Alternatively, the seat mounting hole 1211 may be configured as a square, a circle, or other suitable shapes. In one or more embodiments, two first reinforcing protrusions 1212 opposing each other are further provided on the two long sides of the rectangular hole 12111. Each reinforcing protrusion 1212 is configured to extend vertically downward from the top wall 12. The provision of the first reinforcing protrusions 1212 can enhance the rigidity and strength of the seat mounting portion 121, especially near the seat mounting hole 1211. In addition, the provision of the two first reinforcing protrusions 1212 opposing each other can also make the force near the rectangular hole 12111 more uniform.

[0085] Continue to participate Figure 3 and Figure 4 In one or more embodiments, a weight-reducing opening 122 is provided at the left and right ends of each seat mounting portion 121. In one or more embodiments, the weight-reducing opening 122 is a gradually expanding trumpet 1221 that opens toward the rear of the vehicle (i.e., in a direction away from the upper edge 111 of the vertical wall 11), so that the weight of the top wall 12 can be reduced as much as possible while satisfying the rigidity and strength requirements, thereby improving the lightweight level. In one or more embodiments, a support protrusion 123 is formed on the top wall 12, which is located at the bottom of each trumpet 1221 and extends vertically upward. The provision of the support protrusion 123 can not only enhance the rigidity and strength of the top wall 12 near the trumpet 1221, but also provide good support for the carpet (not shown) covering it.

[0086] Continue to participate Figure 3 and Figure 4 In one or more embodiments, two first carpet mounting portions 124 are provided at the left and right ends of the top wall 12, respectively, and a second carpet mounting portion 125 is formed between each two adjacent weight-reducing openings 122. A carpet mounting hole 1251 is provided on each first carpet mounting portion 124 and each second carpet mounting portion 125 to more securely secure the carpet to the top wall 12. The carpet mounting holes 1251 may be circular, square, or other suitable shapes.

[0087] like Figure 4 As shown, in one or more embodiments, the bottom wall 13 is a substantially rectangular strip structure. Figure 4In the illustrated orientation, the bottom wall 13 includes a main body 133 positioned below the vertical wall 11, a first end 131 extending leftward from the main body 133, and a second end 132 extending rightward from the main body 133. This arrangement creates a transversely oriented "convex" shape, with the top shorter and the bottom longer, providing greater stability. Furthermore, the longer bottom wall 13 ensures more uniform force distribution across the main body 10. Furthermore, the space above the first and second ends 131, 132 can be used for piping, door sill pressure plates, and other installations, further improving space utilization.

[0088] Continuing with Figure 2, in one or more embodiments, a first reinforcement bracket 20a and a second reinforcement bracket 20b are respectively provided at the lower portion of each seat mounting portion 121 and on the left and right sides of each seat mounting portion 121. Each set of first and second reinforcement brackets 20a, 20b is therefore located on the left and right sides of the corresponding weight-reducing hole 114, thereby enhancing the rigidity and strength near the weight-reducing hole 114. Preferably, the first and second reinforcement brackets 20a, 20b are symmetrically arranged relative to the vertical centerline of the seat mounting hole 1211 on the corresponding seat mounting portion 121. More preferably, the first and second reinforcement brackets 20a, 20b are arranged in a figure-eight shape relative to the vertical centerline of the seat mounting hole 1211 on the corresponding seat mounting portion 121, i.e., the lateral distance between the upper ends of the first and second reinforcement brackets 20a, 20b is less than the lateral distance between the lower ends of the first and second reinforcement brackets 20a, 20b. This arrangement ensures more uniform force distribution across the first and second reinforcement brackets 20a, 20b and a more stable structure. In one or more embodiments, the first reinforcement bracket 20a and the second reinforcement bracket 20b below the left seat mounting portion 121a are respectively identical to the first reinforcement bracket 20a and the second reinforcement bracket 20b below the right seat mounting portion 121c, and thus the two sets of first reinforcement brackets 20a and the second reinforcement bracket 20b are interchangeable. In one or more embodiments, the first reinforcement bracket 20a and the second reinforcement bracket 20b below the center seat mounting portion 121b are larger in size than the first reinforcement bracket 20a and the second reinforcement bracket 20b below the left seat mounting portion 121a and the right seat mounting portion 121c, respectively. However, all the first reinforcement brackets 20a and all the second reinforcement brackets 20a are identical in shape.

[0089] Figure 6 Schematic diagram of the structure of the first reinforcement bracket in the crossbeam assembly of the second row of seats in a vehicle according to the present invention. Figure 6As shown, in one or more embodiments, the first reinforcement bracket 20a includes a plate 21, a first transverse fixing portion 22, a second transverse fixing portion 23, and a first vertical fixing portion 24. The first reinforcement bracket 20a can be integrally formed using a casting process using galvanized steel or other suitable metals. The second reinforcement bracket 20b forms a mirror-symmetrical structure with the first reinforcement bracket 20a. Therefore, the following description will focus solely on the structure of the first reinforcement bracket 20a, and will not further detail the structure of the second reinforcement bracket 20b.

[0090] Continue to see Figure 6 The plate body 21 is a generally rectangular plate-shaped structure that extends vertically at an angle. In one or more embodiments, the plate body 21 is provided with a first positioning hole 215 and a second positioning hole 216 spaced vertically apart from each other to facilitate assembly and improve assembly efficiency. In one or more embodiments, a third reinforcing protrusion 217 extending vertically downward is further provided on the upper portion of the plate body 21 to enhance the rigidity and strength of the connection between the plate body 21 and the first transverse fixing portion 22.

[0091] Continue to see Figure 6 , the first transverse fixing portion 22 extends from the upper portion of the plate body 21 toward the first side 211 of the plate body 21. Figure 6 In the illustrated orientation, the first side 211 is the right side of the plate 21. In the assembled state, the first transverse fixing portion 22 is fixed to the lower surface of the corresponding seat mounting portion 121. Preferably, the first transverse fixing portion 22 is configured to be fixed to the seat mounting portion 121 by welding to achieve a secure and stable fixed connection.

[0092] Continue to see Figure 6 , the second transverse fixing portion 23 extends from the lower portion of the plate body 21 toward the second side 212 of the plate body 21 opposite to the first side 211. Figure 6 In the illustrated orientation, the second side 212 is the left side of the plate body 21. In one or more embodiments, a fixing hole 231 is provided in the second transverse fixing portion 23, so that the first reinforcement bracket 20a and the second reinforcement bracket 20b can be conveniently assembled to the crossbeam 200 of the rear floor frame 2 using a rotary tapping and riveting process (i.e., FDS, Flow Drill Screw), thereby improving assembly efficiency.

[0093] Continue to see Figure 6 , the third vertical fixing portion 24 extends from the first vertical edge 213 of the plate body 21 toward the second side 212. Figure 6In the illustrated orientation, the first vertical edge 213 is the left vertical edge of the plate 21. The third vertical fixing portion 24 is configured to be fixed to the rear side 113 of the vertical wall 11 of the crossbeam body 10. Preferably, the third vertical fixing portion 24 is configured to be fixed to the rear side 113 by welding to achieve a secure and stable fixed connection.

[0094] Continue to see Figure 6 In one or more embodiments, the first reinforcing bracket 20a further has a vertical flange 25. The vertical flange 25 is formed on the second vertical edge 214 of the plate body 21 and extends toward the first side 211. Figure 6 In the orientation shown, the second vertical edge 214 is the right vertical edge of the plate body 21. By providing the vertical flange 25, the rigidity and strength of the first reinforcing bracket 20a can be further enhanced, thereby extending the service life.

[0095] It should be noted that in one or more embodiments, the first reinforcing bracket 20a may include only the plate 21, the first transverse fixing portion 22, and the second transverse fixing portion 23. Alternatively, the first reinforcing bracket 20a may include only the plate 21, the second transverse fixing portion 23, and the first vertical fixing portion 24. The specific embodiments of each component (i.e., the plate 21, the first transverse fixing portion 22, the second transverse fixing portion 23, and the first vertical fixing portion 24) may be the same as those in any of the embodiments described above and will not be further described here.

[0096] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A crossbeam assembly for a second row of seats in a vehicle, characterized in that: The crossbeam assembly comprises: a cross member body comprising a vertical wall extending in a transverse direction of the vehicle, a top wall extending from an upper edge of the vertical wall toward a rear portion of the vehicle, and a bottom wall extending from a lower edge of the vertical wall toward a front portion of the vehicle, the bottom wall being configured to be fixed to a rear floor frame of the vehicle, the top wall being provided with a plurality of seat mounting portions spaced apart from each other in the transverse direction and adapted to mount the second row of seats; and A first reinforcement bracket and a second reinforcement bracket, wherein the first reinforcement bracket and the second reinforcement bracket are located below each of the seat mounting portions and are distributed on the left and right sides of each of the seat mounting portions, and the first reinforcement bracket and the second reinforcement bracket are configured to form a fixed connection with the crossbeam body and the rear floor frame respectively.

2. The cross member assembly for a second row of seats for a vehicle according to claim 1, characterized in that: A seat mounting hole is provided on each seat mounting portion, and the first reinforcement bracket and the second reinforcement bracket are arranged symmetrically with respect to a vertical center line of the corresponding seat mounting hole.

3. The cross member assembly for a second row of seats in a vehicle according to claim 2, characterized in that: Each of the seat mounting holes is a rectangular hole extending in the transverse direction, and first reinforcing protrusions opposite to each other are respectively provided on two long sides of the rectangular hole.

4. The cross member assembly for a second row of seats in a vehicle according to claim 2, characterized in that: The first reinforcement bracket and the second reinforcement bracket are arranged in an eight-shape relative to the vertical center line.

5. The cross member assembly for a second row of seats in a vehicle according to claim 4, characterized in that: Each of the first reinforcement bracket and the second reinforcement bracket includes: plate body; a first transverse fixing portion extending from an upper portion of the plate body toward a first side of the plate body and configured to be fixed to a lower surface of a corresponding seat mounting portion; a second transverse fixing portion extending from a lower portion of the plate body toward a second side of the plate body opposite to the first side and configured to be fixed to the rear floor frame; and A third vertical fixing portion extends from a vertical edge of the plate body toward the second side and is configured to be fixed on a rear side surface of the vertical wall.

6. The cross member assembly for a second row of seats in a vehicle according to claim 5, characterized in that: Each of the first reinforcement bracket and the second reinforcement bracket further includes: A vertical flange is formed on the other vertical edge of the plate body and extends toward the first side.

7. The cross member assembly for a second row of seats in a vehicle according to claim 5, characterized in that: A first positioning hole and a second positioning hole spaced apart from each other in a vertical direction are formed on the plate body.

8. The cross member assembly for a second row of seats in a vehicle according to claim 1, characterized in that: The top wall is provided with weight-reducing openings respectively located on the left and right sides of each seat mounting portion.

9. The cross member assembly for a second row of seats in a vehicle according to claim 8, characterized in that: Each of the weight-reducing openings is configured as a bell mouth opening toward the rear of the vehicle.

10. The cross member assembly for a second row of seats in a vehicle according to claim 9, characterized in that: A supporting protrusion is formed on the top wall and is located at the bottom of each bell mouth and extends vertically upward.

11. The cross member assembly for a second row of seats in a vehicle according to claim 8, characterized in that: A first carpet mounting portion is provided at the left and right ends of the top wall respectively, a second carpet mounting portion is formed between every two adjacent weight-reducing openings, and carpet mounting holes are provided on both the first carpet mounting portion and the second carpet mounting portion.

12. The cross member assembly for a second row of seats in a vehicle according to claim 1, characterized in that: A plurality of weight-reducing holes are formed on the vertical wall, and each of the weight-reducing holes is located below the corresponding seat mounting portion and between the first reinforcement bracket and the second reinforcement bracket.

13. The cross member assembly for a second row of seats in a vehicle according to claim 1, characterized in that: A plurality of second reinforcing protrusions are also provided on the vertical wall, which are spaced apart from each other along the transverse direction and extend vertically backward from the vertical wall.

14. The cross member assembly for a second row of seats in a vehicle according to claim 1, characterized in that: A third positioning hole and a fourth positioning hole are respectively provided on the left and right ends of the vertical wall.

15. The cross member assembly for a second row of seats for a vehicle according to claim 1, characterized in that: The multiple seat mounting parts include a central seat mounting part and a left seat mounting part and a right seat mounting part symmetrically distributed on the left and right sides of the central seat mounting part, and the first reinforcement bracket and the second reinforcement bracket located under the left seat mounting part can be interchangeable with the first reinforcement bracket and the second reinforcement bracket located under the right seat mounting part.

16. A vehicle, characterized in that: The vehicle comprises: rear floor frame; Second row seats; and According to any one of claims 1 to 15, the crossbeam assembly for a second row of seats in a vehicle is fixed to the rear floor frame, and the second row of seats is fixed to the crossbeam assembly.

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