Seat mounting frame and vehicle

Abstract

The utility model provides a seat mounting frame and a vehicle, and belongs to the technical field of seat mounting structures, the seat mounting frame comprises two frame units, and each frame unit comprises an inner longitudinal beam, an oblique beam, an outer longitudinal beam, a first seat mounting position, a second seat mounting position, a third seat mounting position and a fourth seat mounting position. The seat mounting frame and the floor form a double-layer floor structure, and the compatible mounting requirements of different seat cushion areas, different seat cushion thicknesses and different floor mounting positions can be met. The first inclined struts, the second inclined struts and the vertical supports are arranged to form a four-grid type force transmission framework, and it is guaranteed that inclined stress is uniform and stable. The inner foot margin is arranged to be an inverted trapezoidal component, the front and back supporting stability of the inner foot margin is improved, and the inner foot margin light-weight design is achieved through the weight reduction hollowed-out parts. The position of the second floor connecting position is organically combined with the arrangement of the supporting cross beam, so that the force transmission stability between the outer longitudinal beam and the second floor is improved. And by arranging the connecting bracket, the requirements of the luggage case impact test are met.

Description

Technical Field

[0001] This utility model belongs to the field of seat installation structure technology, specifically relating to a seat installation frame and a vehicle. Background Technology

[0002] With the development of diversified market demands in the automotive industry, users of the same model have gradually developed distinct needs for the number and type of seats. For example, users with larger families tend to prefer six- or seven-seat models, users who prioritize comfort tend to choose seats with large cushions, and users who prioritize driving and handling tend to choose seats with integrated rails.

[0003] Currently, multiple floor assemblies often need to be designed to meet different user needs, resulting in very high design and production costs. Furthermore, different vehicle models require different parts, leading to a large number of parts and putting significant pressure on production, warehousing, and logistics. Utility Model Content

[0004] This utility model provides a seat mounting frame and vehicle, aiming to solve the problem that existing seat mounting structures cannot meet the requirements of compatible design.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] In a first aspect, embodiments of the present invention provide a seat mounting frame, comprising:

[0007] Two frame units arranged symmetrically on the left and right;

[0008] Each of the frame units includes an inner longitudinal beam, a diagonal beam, an outer longitudinal beam, a first seat mounting position, a second seat mounting position, a third seat mounting position, and a fourth seat mounting position. The inner longitudinal beam and the outer longitudinal beam extend in the front-rear direction and are respectively connected to the floor.

[0009] The first seat mounting position is located at the front end of the inner longitudinal beam, the second seat mounting position is located at the rear end of the inner longitudinal beam, the third seat mounting position is located at the rear end of the outer longitudinal beam, and the fourth seat mounting position is located at the front end of the outer longitudinal beam; the first seat mounting position is located behind the fourth seat mounting position, and the second seat mounting position is located behind the third seat mounting position.

[0010] The two ends of the inclined beam are respectively connected to the rear end of the inner longitudinal beam and the rear end of the outer longitudinal beam.

[0011] Existing seat installation structures are incompatible. For example, one type of second-row seat is a one-piece rail seat with a rail mechanism and leg support mechanism under the seat cushion foam, while another type is a traditional large-cushion seat without any mechanism under the seat cushion foam. These two types of seats have a height difference in the vertical direction, and the same rear floor cannot accommodate the installation of both types of seats simultaneously. Other examples are not listed here. Therefore, to meet different driving and riding needs, different mounting bases are often designed on the floor separately for different seat requirements, and installation positions are designed accordingly for different mounting bases. Not only are the mounting bases different, but the floor itself also needs to be modified accordingly to adapt to the connection with different mounting bases. This cannot achieve a compatible design and cannot meet the requirements of a vehicle floor platform. The solution shown in this application embodiment has the following advantages compared with the prior art: First, the first, second, third, and fourth seat mounting positions form a quadrilateral arrangement with an outward tilt. These four mounting positions meet the general installation requirements of seat brackets (i.e., the seat bracket located on the outside of the rear seats is connected to the outer longitudinal beam via the third and fourth seat mounting positions; the seat bracket located between two adjacent rear seats is connected to the inner longitudinal beam via the first and third seat mounting positions). By rationally setting the area of ​​the quadrilateral, the spatial outline of seats of different sizes can be satisfied. Second, by rationally arranging the height of the frame unit, its height meets the installation requirements of the seat with the thickest cushion, thus accommodating the installation requirements of seats with cushions of different thicknesses. Third, the long axis of the inclined beam is set at an angle to both the front-to-back direction and the inside-outside direction, resulting in a gap on the outer rear side of the quadrilateral formed by the four seat mounting positions. This avoids the narrow space at the rear of the floor, preventing the problem of insufficient space for assembly and satisfying the assembly requirements of a single frame unit at different positions on the floor. Fourth, the rear seats are generally designed as three seats. By setting two symmetrical frame units, assembly with all seat brackets can be achieved, meeting the overall assembly requirements of the rear seats. It is evident that the seat mounting frame and the floor constitute a double-layer floor assembly. Because the seat mounting frame and the floor are set separately, the seat mounting frame, while meeting the requirements for assembly at different positions on the floor, can accommodate installation scenarios with different seat cushion areas, thicknesses, and floor installation positions. This fully adapts to the installation needs of the rear seats, achieving a compatible design for seat installation. It eliminates the need for separate floor assemblies for different seats, thus meeting the platformization requirements of the vehicle floor.

[0012] In conjunction with the first aspect, in one possible implementation, the first, third, and fourth seat mounting positions are all located in front of the seat back, while the second seat mounting position is located behind the seat back. This concentrates the main stress point directly under the seat cushion, resulting in more even stress distribution on the seat as a whole. It also effectively avoids the problem of insufficient space preventing the mounting points on the left and right rear sides of the frame unit from being assembled.

[0013] In conjunction with the first aspect, in one possible implementation, an inner foot is provided below the inner longitudinal beam, and a first floor connection position is provided on the inner foot. In the front-rear direction, the first floor connection position is located between the first seat mounting position and the second seat mounting position. An outer foot is also connected below the outer side of the outer longitudinal beam, and a second floor connection position is provided on the outer foot. By setting the inner and outer foot, a raised support is formed under the inner longitudinal beam, outer longitudinal beam, and diagonal beam, avoiding interference with the floor. The raised height can also be flexibly set according to actual needs. Without changing the thickness of the frame unit body, the overall height of the frame unit can be adjusted more flexibly to adapt to different design requirements.

[0014] In some embodiments, the outer footing is a hollow component that runs through the front and back and is closed on all four sides. Below the outer longitudinal beam, from the inside out, are sequentially arranged a first diagonal brace, a second diagonal brace, and a vertical support. The first diagonal brace connects the lower inner edge of the outer footing to the outer longitudinal beam; the second diagonal brace connects the upper inner edge of the outer footing to the outer longitudinal beam; and the vertical support connects the upper inner edge of the outer footing to the outer longitudinal beam. Both the outer longitudinal beam and the outer footing have closed frame-like cross-sections. Together with the first diagonal brace, the second diagonal brace, and the vertical support, they form a four-grid structure, which better ensures the uniformity of diagonal forces and the stability of the structure.

[0015] The distance between the front and rear sides of the inland foot gradually decreases from top to bottom, and weight-reducing cutouts are provided in front of and behind the connecting holes in the inland foot. This improves the stability of the inland foot in the front-rear direction, allowing it to better withstand the impact of vehicle start-stop, while the weight-reducing cutouts enable a lightweight design of the inland foot while ensuring structural strength meets requirements.

[0016] In some embodiments, in the front-rear direction, the second floor connection is located between the third seat mounting position and the fourth seat mounting position; using the line connecting the third seat mounting position and the second seat mounting position as a reference line, and the orthographic projection of the second floor connection on the reference line as a reference position, the distance between the fourth seat mounting position and the reference position is D1, and the distance between the reference position and the third seat mounting position is D2, with the ratio of D1 to D2 being 0.9 to 1.1. This ensures that the force transmission path between the second floor connection and the third seat mounting position is approximately the same length as the force transmission path between the second seat mounting position and the fourth seat mounting position, resulting in more uniform force transmission, better structural stability between the outer and inner longitudinal beams, and avoidance of tilting deformation of the outer longitudinal beam.

[0017] In some embodiments, an anti-tilting beam is further provided between the outer longitudinal beam and the inner longitudinal beam. The outer end of the anti-tilting beam is connected to the front end of the outer longitudinal beam, and the inner end is connected to the area on the inner longitudinal beam corresponding to the first floor connection position. This maintains structural stability among the inner longitudinal beam, outer longitudinal beam, and diagonal beam even when the ratio of D1 to D2 exceeds the range of 0.9 to 1.1.

[0018] In some embodiments, the frame unit further includes a support beam, the outer end of which is connected to the rear end of the outer longitudinal beam, and the inner end of which is connected to the area on the inner longitudinal beam corresponding to the first floor connection position. The support beam can reinforce the space between the inner and outer longitudinal beams; if used in conjunction with an anti-tilting beam, it can form a triangular structure between the anti-tilting beam, the support beam, and the outer longitudinal beam, further reinforcing the space between the inner and outer longitudinal beams and more effectively preventing the outer longitudinal beam from tilting or deforming.

[0019] In some embodiments, the seat mounting frame further includes a front crossbeam and a rear crossbeam. The two ends of the front crossbeam are respectively connected to the areas on the inner longitudinal beams of the two frame units where the first floor connection positions are located. The two ends of the rear crossbeam are respectively connected to the rear ends of the inner longitudinal beams of the two frame units. By connecting the two frame units into one unit through the front and rear crossbeams, the overall integrity of the seat mounting frame is strengthened, making assembly with the floor easier and significantly improving its structural strength.

[0020] In conjunction with the first aspect, in one possible implementation, the seat mounting frame further includes a connecting bracket corresponding to the second seat mounting position. This connecting bracket is a box-shaped component and is connected to the floor. The rear end of the inner longitudinal beam is provided with a downwardly extending second support sleeve, which forms the second seat mounting position. The lower surface of the second support sleeve abuts against the upper wall of the connecting bracket. Fasteners corresponding to the second seat mounting position sequentially penetrate the upper wall of both the second support sleeve and the connecting bracket to lock the inner longitudinal beam to the connecting bracket. The connecting bracket is connected to the floor crossbeam, ensuring sufficient strength at the stress point. The combination of the frame unit and the floor crossbeam further enhances the stability of the frame unit installation, meeting the stringent requirements of luggage impact tests.

[0021] Secondly, this utility model embodiment also provides a vehicle including the aforementioned seat mounting frame.

[0022] Compared with the prior art, the solution shown in this application adopts the above-mentioned seat mounting frame and realizes the installation requirements of different types of seats through a floor assembly consisting of a floor and a seat mounting frame. This achieves a compatible design for seat installation and enables the production of the floor assembly through the same production line. There is no need to design different production lines and numerous adaptable parts for different seats. The platformization of vehicle floor production is high, and the number of parts is small, which reduces the pressure on warehousing and logistics. Attached Figure Description

[0023] Figure 1 An assembly perspective view of the seat mounting frame, seat, and floor provided for an embodiment of this utility model;

[0024] Figure 2 An assembly perspective view of the seat mounting frame and floor provided in an embodiment of this utility model;

[0025] Figure 3 A side sectional view of the seat mounting frame, seat, and floor provided for an embodiment of this utility model;

[0026] Figure 4 A schematic diagram showing the distribution of the first seat mounting position, the second seat mounting position, the third seat mounting position, the fourth seat mounting position, and the seat back in the seat mounting frame provided for an embodiment of this utility model;

[0027] Figure 5 An assembly perspective view of the seat mounting frame and seat bracket provided in an embodiment of this utility model;

[0028] Figure 6 A perspective view of the seat mounting frame provided in an embodiment of this utility model;

[0029] Figure 7 A partial perspective view of the seat mounting frame provided in an embodiment of this utility model;

[0030] Figure 8 A top view of the seat mounting frame provided in an embodiment of this utility model. Figure 1 ;

[0031] Figure 9 for Figure 8 AA section view;

[0032] Figure 10 This is a schematic diagram showing the force transmission between the outer foot and the outer longitudinal beam in an embodiment of this utility model;

[0033] Figure 11 A top view of the seat mounting frame provided in an embodiment of this utility model. Figure 2 ;

[0034] Figure 12 The three-dimensional connecting bracket used in the embodiments of this utility model Figure 1 ;

[0035] Figure 13 The three-dimensional connecting bracket used in the embodiments of this utility model Figure 2 ;

[0036] Explanation of reference numerals in the attached figures:

[0037] 100. Seat mounting frame; 110. Frame unit; 1. Inner longitudinal beam; 101. Operating hole; 102. Inner support rib; 2. Diagonal beam; 3. Outer longitudinal beam; 301. Step groove; 4. First seat mounting position; 5. Second seat mounting position; 6. Third seat mounting position; 7. Fourth seat mounting position; 8. Inner foot; 801. Alignment groove; 802. Weight reduction hollow; 9. First floor connection position; 10. Outer foot; 11. Second floor connection position; 12. First diagonal brace; 13. Second diagonal brace; 14. Vertical support; 15. Reference line; 16. Reference Position; 17. Anti-roll beam; 1701. First weight reduction hole; 18. Support beam; 19. Front beam; 20. Rear beam; 2001. Second weight reduction hole; 21. Connecting bracket; 2101. Bracket body; 2102. Rear connecting edge; 2103. Outer connecting edge; 2104. Nut seat; 2105. Inner connecting edge; 2106. Front connecting edge; 23. First support sleeve; 24. Second support sleeve; 25. Third support sleeve; 26. Fourth support sleeve; 200. Seat bracket; 300. Seat backrest; 400. Floor; 410. Rear floor beam. Detailed Implementation

[0038] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0039] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and drawings of this utility model is for distinguishing different objects and not for describing a specific order.

[0040] In the claims, description, and accompanying drawings of this utility model, the terms "upper" and "lower" refer to the vertical direction of the vehicle body; the terms "left" and "right" refer to the horizontal direction of the vehicle body; the terms "front" and "rear" refer to the front-rear direction of the vehicle body; the term "inner" refers to the direction towards the vehicle's center plane (i.e., the plane perpendicular to the horizontal direction and located at the vehicle's center of gravity); and the term "outer" refers to the direction away from the vehicle's center plane. Other directional terms, unless otherwise explicitly defined, such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "clockwise," "counterclockwise," "high," and "low," are used to indicate orientation or positional relationships based on the orientation and positional relationships shown in the accompanying drawings. These are merely for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the specific scope of protection of this utility model.

[0041] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this utility model shall be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or components.

[0042] In the claims, description and accompanying drawings of this utility model, the terms "comprising," "having," and variations thereof are used to mean "including but not limited to."

[0043] In the claims, description and drawings of this utility model, if the term "fitting connection" is used, its implementation methods include, but are not limited to, fitting welding, and connecting by threaded connectors after fitting.

[0044] Please refer to the following: Figures 1 to 8The seat mounting frame 100 provided by this utility model will now be described. The seat mounting frame 100 includes two frame units 110 arranged symmetrically on the left and right sides; each frame unit 110 includes an inner longitudinal beam 1, a diagonal beam 2, an outer longitudinal beam 3, a first seat mounting position 4, a second seat mounting position 5, a third seat mounting position 6, and a fourth seat mounting position 7. The inner longitudinal beam 1 and the outer longitudinal beam 3 both extend in the front-rear direction and are respectively connected to the floor 400; the first seat mounting position 4 is located at the front end of the inner longitudinal beam 1, the second seat mounting position 5 is located at the rear end of the inner longitudinal beam 1, the third seat mounting position 6 is located at the rear end of the outer longitudinal beam 3, and the fourth seat mounting position 7 is located at the front end of the outer longitudinal beam 3; the first seat mounting position 4 is located behind the fourth seat mounting position 7, and the second seat mounting position 5 is located behind the third seat mounting position 6; the two ends of the diagonal beam 2 are respectively connected to the rear end of the inner longitudinal beam 1 and the rear end of the outer longitudinal beam 3.

[0045] In this embodiment, the first seat mounting position 4, the second seat mounting position 5, the third seat mounting position 6, and the fourth seat mounting position 7 are all formed by mounting holes. The inner longitudinal beam 1 and the seat bracket 200, and the outer longitudinal beam 3 and the seat bracket 200 are locked together by fasteners passing through the mounting holes. The fasteners can be implemented using, but are not limited to, threaded fasteners.

[0046] In this embodiment, the manufacturing methods of the inner longitudinal beam 1, the outer longitudinal beam 3, and the inclined beam 2 include, but are not limited to, extrusion molding of aluminum alloy, forming of steel profiles, stamping sheet metal forming, and die casting of aluminum alloy.

[0047] Existing seat installation architectures are incompatible. For example, one type of second-row seat is a one-piece rail seat with a rail mechanism and leg support mechanism under the seat cushion foam, while another type is a traditional large-cushion seat without any mechanism under the seat cushion foam. These two types of seats have a height difference in the vertical direction, and the same rear floor 400 cannot accommodate the installation of both types of seats simultaneously. Other examples are not listed here. Therefore, in order to meet different driving and riding needs, different mounting bases are often designed on the floor 400 separately for different seat requirements, and installation positions are designed accordingly for different mounting bases. Not only are the mounting bases different, but the floor 400 itself also needs to be modified accordingly to adapt to the connection with different mounting bases. It cannot achieve a compatible design, nor can it meet the platform requirements of the vehicle floor 400.

[0048] The seat mounting frame 100 provided in this embodiment has the following advantages compared with the prior art:

[0049] Firstly, the first seat mounting position 4, the second seat mounting position 5, the third seat mounting position 6, and the fourth seat mounting position 7 form a quadrilateral arrangement with the outer sides tilting forward (e.g., Figure 7As shown in the dashed box in the figure, the four mounting positions meet the general installation requirements of the seat bracket 200 (that is, the seat bracket 200 located on the outside of the rear seat is connected to the outer longitudinal beam 3 through the third seat mounting position 6 and the fourth seat mounting position 7, and the seat bracket 200 located between two adjacent rear seats is connected to the inner longitudinal beam 1 through the first seat mounting position 4 and the third seat mounting position 6). By reasonably setting the area of ​​the above quadrilaterals, the spatial outer contour of seats of different sizes can be satisfied.

[0050] Secondly, by reasonably arranging the height of the frame unit 110, its height meets the installation requirements of the seat with the thickest cushion, thereby accommodating the installation requirements of seats with cushions of different thicknesses.

[0051] Third, the long axis of the inclined beam 2 is set at an angle to both the front-to-back direction and the inside-outside direction, so that the outer rear side of the quadrilateral formed by the four seat mounting positions has a gap, avoiding the narrow space at the rear of the floor 400, avoiding the problem of space being too tight to assemble, and meeting the assembly requirements of a single frame unit 110 and the floor 400 at different positions.

[0052] Fourth, the rear seats are generally designed as three seats. By setting two symmetrical frame units 110, they can be assembled with all seat brackets 200 to meet the overall assembly requirements of the rear seats.

[0053] As can be seen, the seat mounting frame 100 and the floor 400 in this embodiment constitute a double-layer floor assembly. Since the seat mounting frame 100 and the floor 400 are set separately, the seat mounting frame 100 can be assembled at different positions on the floor 400, and can be compatible with different installation scenarios with different seat cushion areas, different seat cushion thicknesses, and different installation positions on the floor 400. It fully adapts to the installation needs of the rear seats, realizes the compatible design requirements of seat installation, and does not require separate design of floor assemblies for different seats, thus meeting the platform requirements of the vehicle floor 400.

[0054] In some embodiments, see Figure 4 The fourth seat mounting position 7, the first seat mounting position 4, the third seat mounting position 6, and the second seat mounting position 5 are distributed sequentially from front to back. Figure 4 The dotted box in the image represents the area where the seat back 300 is located. In this way, the main stress point is concentrated directly under the seat cushion, resulting in more even stress distribution on the entire seat. It also effectively avoids the problem of the mounting points on the left and right rear sides of the frame unit 110 being unable to be installed due to limited space.

[0055] In some embodiments, to achieve the connection between the frame unit 110 and the floor 400, see [reference needed]. Figure 6 and Figure 7Below the inner longitudinal beam 1, there is an inner foot 8, and on the inner foot 8, there is a first floor connection position 9. In the front-rear direction, the first floor connection position 9 is located between the first seat mounting position 4 and the second seat mounting position 5. Below the outer side of the outer longitudinal beam 3, there is also an outer foot 10, and on the outer foot 10, there is a second floor connection position 11. In this embodiment, both the first floor connection position 9 and the second floor connection position 11 are formed by mounting holes. By fasteners passing through the mounting holes, the inner foot 8 and the floor 400 are locked together, and the outer foot 10 and the floor 400 are locked together. The fasteners are implemented in ways including but not limited to threaded fasteners.

[0056] In this embodiment, by setting up inner footings 8 and outer footings 10, a raised support is formed under the main body of the frame unit 110, which is composed of inner longitudinal beams 1, outer longitudinal beams 3 and inclined beams 2, to avoid interference between the main body and the floor 400. At the same time, the raised height can be flexibly set according to actual needs. Without changing the thickness of the main body of the frame unit 110, and without changing the main structure of the frame unit 110, the overall height of the frame unit 110 can be adjusted more flexibly to adapt to different design requirements.

[0057] In some embodiments, see Figure 2 The inner longitudinal beam 1 is provided with an operating hole 101 corresponding to the inner foot 8, so as to insert a fastener into the first floor connection position 9. Optionally, the operating hole 101 is an oblong hole extending front and back, which can effectively correspond to the first floor connection position 9 even if there is an error, avoiding the problem that the fastener cannot be inserted and locked.

[0058] Optionally, to avoid interference between the fastener and the inner longitudinal beam 1 in the vertical direction, a clearance groove 801 is provided on the upper side of the inner foot 8, and the upper end of the fastener is placed in the clearance groove 801, so that the upper end of the fastener and the inner longitudinal beam 1 are separated by a certain distance vertically.

[0059] In some embodiments, see Figure 9 and Figure 10 The outer foot 10 is a hollow component that runs through the front and back and is closed on all four sides. Below the outer longitudinal beam 3, from the inside out, are sequentially arranged a first diagonal brace 12, a second diagonal brace 13, and a vertical support 14. The first diagonal brace 12 connects the inner lower edge of the outer foot 10 to the outer longitudinal beam 3; the second diagonal brace 13 connects the inner upper edge of the outer foot 10 to the outer longitudinal beam 3; and the vertical support 14 connects the inner upper edge of the outer foot 10 to the outer longitudinal beam 3. The outer foot 10 serves as the connection point between the frame as a whole and the floor 400. Forces such as those generated during driving and the inertial impact during vehicle start-stop will act on the second floor connection point 11. Part of the force acting on the outer foot 10 is transmitted to the first diagonal brace 12 and the second diagonal brace 13 after passing through the outer side wall, upper side wall, and lower side wall of the outer foot 10 (e.g., ...). Figure 10(As shown by the solid arrow path in the image), the remaining forces are transmitted to the vertical support 14 through the inner wall of the outer foot 10 (as shown by the solid arrow path in the image). Figure 10 As shown by the dashed arrow path in the diagram, the force transmitted to the outer longitudinal beam 3 can be further transmitted to other components through the upper and lower side walls of the outer longitudinal beam 3; the force transmission from the outer longitudinal beam 3 to the outer footing 10 is a similar process. Since the cross-sections of the outer longitudinal beam 3 and the outer footing 10 are both closed frame structures, they, together with the first diagonal brace 12, the second diagonal brace 13, and the vertical support 14, form a four-grid pattern, which can better ensure the uniformity of diagonal forces and the stability of the structure.

[0060] Optionally, in order to make the force transmission more uniform, the first diagonal brace 12 and the second diagonal brace 13 are parallel to each other, and the vertical support 14 is perpendicular to the inside and outside directions.

[0061] In some specific embodiments of the inland foot 8, see Figure 7 The distance between the front and rear sides of the inner foot 8 gradually decreases from top to bottom, forming an inverted trapezoid. Utilizing the high structural strength of the trapezoid, the stability of the inner foot 8 in the front-rear direction is improved, allowing it to better withstand the impact of vehicle start-stop. Based on this, weight-reducing hollows 802 are provided in front of and behind the connecting holes in the inner foot 8, achieving a lightweight design for the inner foot 8 while ensuring structural strength meets requirements.

[0062] In other specific implementations of the inland foot 8, the implementation methods of the inland foot 8 include, but are not limited to, cylinders, polygonal prisms (such as square prisms), etc., as long as they can meet the assembly requirements.

[0063] In some cases, in the front-rear direction, the second floor connection 11 is located between the third seat mounting position 6 and the fourth seat mounting position 7. Using the line connecting the third seat mounting position 6 and the second seat mounting position 5 as reference line 15, and the orthographic projection of the second floor connection 11 onto reference line 15 as reference position 16, the distance between the fourth seat mounting position 7 and reference position 16 is D1, and the distance between reference position 16 and the third seat mounting position 6 is D2. The ratio of D1 to D2 is 0.9 to 1.1 (e.g., 0.95, 1.0, 1.05). A ratio close to 1:1 indicates that the second floor connection 11 corresponds to the middle position between the third seat mounting position 6 and the fourth seat mounting position 7. The force transmission path between the second floor connection 11 and the third seat mounting position 6 is approximately the same length as the force transmission path between the second seat mounting position 5 and the fourth seat mounting position 7, resulting in more uniform force transmission. This improves the structural stability between the outer longitudinal beam 3 and the inner longitudinal beam 1 and avoids the problem of tilting and deformation of the outer longitudinal beam 3.

[0064] See Figure 11In other cases, the ratio of D1 to D2 exceeds the range of 0.9 to 1.1 (i.e., the ratio is less than 0.9 or greater than 1.1), and the design close to 1:1 cannot be achieved. In this case, in order to maintain the structural stability between the inner longitudinal beam 1, the outer longitudinal beam 3 and the inclined beam 2, an anti-tilting beam 17 is also provided between the outer longitudinal beam 3 and the inner longitudinal beam 1. The outer end of the anti-tilting beam 17 is connected to the front end of the outer longitudinal beam 3, and the inner end is connected to the area on the inner longitudinal beam 1 corresponding to the first floor connection position 9.

[0065] Of course, the anti-tilting beam 17 can also be used in scenarios where the ratio of D1 to D2 is close to 1:1, to further strengthen the beam.

[0066] Optional, see Figures 4 to 6 The anti-tilt beam 17 is provided with a first weight-reducing hole 1701. Specifically, the first weight-reducing hole 1701 is a round hole, and multiple holes are provided along the long axis of the anti-tilt beam 17.

[0067] In some embodiments, see Figures 1 to 6 , Figure 7 and Figure 11 The frame unit 110 also includes a support beam 18. The outer ends of the support beam 18 are connected to the rear ends of the outer longitudinal beam 3, and the inner ends are connected to the area on the inner longitudinal beam 1 corresponding to the first floor connection position 9, so as to strengthen the space between the inner longitudinal beam 1 and the outer longitudinal beam 3. If used in conjunction with the anti-tilting beam 17, a triangular structure can be formed between the anti-tilting beam 17, the support beam 18, and the outer longitudinal beam 3, further strengthening the space between the inner longitudinal beam 1 and the outer longitudinal beam 3, and more effectively preventing the outer longitudinal beam 3 from tilting and deforming.

[0068] Based on the above embodiments, see Figure 6 The outer longitudinal beam 3 has a stepped groove 301 at its rear end. The supporting crossbeam 18 is placed in the stepped groove 301, and the front side of the supporting crossbeam 18 is fitted to the front side wall of the stepped groove 301, while the lower side is fitted to the bottom wall of the stepped groove 301. The inclined beam 2 is fitted to the rear side of the supporting crossbeam 18, and the inner end face of the supporting crossbeam 18 and the inner end face of the inclined beam 2 are fitted to the outer side of the inner longitudinal beam 1, respectively. By setting the stepped groove 301, the connection area between the supporting crossbeam 18 and the outer longitudinal beam 3 is maximized, and the bonding strength between the rear part of the outer longitudinal beam 3 and the supporting crossbeam 18 and the inclined beam 2 is high. At the same time, the upper surfaces of the main structures constituting the frame unit 110, such as the outer longitudinal beam 3, the inner longitudinal beam 1, the inclined beam 2, and the supporting crossbeam 18, are roughly flush, providing a relatively flat installation space for the seat bracket 200. This makes the installation of the seat bracket 200 more convenient and the assembly accuracy easier to control.

[0069] In some embodiments, see Figures 1 to 8The seat mounting frame 100 also includes a front crossbeam 19 and a rear crossbeam 20. The two ends of the front crossbeam 19 are connected to the areas where the first floor connection positions 9 are provided on the inner longitudinal beams 1 of the two frame units 110, respectively. The two ends of the rear crossbeam 20 are connected to the rear ends of the inner longitudinal beams 1 of the two frame units 110, respectively. By connecting the two frame units 110 into a single unit through the front crossbeam 19 and the rear crossbeam 20, the overall integrity of the seat mounting frame 100 is strengthened, making assembly with the floor 400 easier and significantly improving its structural strength. It should be understood that a middle crossbeam can also be selectively provided between the front crossbeam 19 and the rear crossbeam 20, with its end connected to the middle of the inner longitudinal beam 1.

[0070] Optional, see Figures 1 to 8 To achieve a lightweight design, the rear crossbeam 20 is provided with a second weight-reducing hole 2001. Specifically, the second weight-reducing hole 2001 is a circular hole, and multiple holes are provided along the long axis of the rear crossbeam 20; at the same time, the front and rear width of the rear crossbeam 20 is greater than the width of the front crossbeam 19 to ensure sufficient strength even with the weight-reducing holes.

[0071] Optionally, based on the simultaneous provision of a support beam 18 and a front beam 19, the support beam 18 and the front beam 19 are positioned in a corresponding manner in the front-rear direction, which can form a longer force transmission path.

[0072] It should be noted that without the front crossbeam 19 and rear crossbeam 20, the two frame units 110 can also be used independently, resulting in a relatively low overall integrity of the seat mounting frame 100.

[0073] In some embodiments, see Figures 1 to 6 , Figure 12 and Figure 13 The seat mounting frame 100 also includes a connecting bracket 21 corresponding to the second seat mounting position 5. The connecting bracket 21 is a box-shaped component and is connected to the floor 400. The rear end of the inner longitudinal beam 1 is provided with a downwardly extending second support sleeve 24, which forms the second seat mounting position 5. The lower surface of the second support sleeve 24 abuts against the upper wall of the connecting bracket 21. The fasteners corresponding to the second seat mounting position 5 pass through the upper wall of the second support sleeve 24 and the connecting bracket 21 in sequence to lock the inner longitudinal beam 1 and the connecting bracket 21. The connecting bracket 21 is connected to the floor crossbeam (e.g., the rear floor crossbeam 410) to ensure that the stress point has sufficient strength. The combination of the frame unit 110 and the floor crossbeam can further improve the stability of the frame unit 110 installation and meet the stringent requirements of the trunk impact test (simulating the inertial impact of heavy cargo in the trunk on the seat under conditions such as sudden braking and collision of the vehicle).

[0074] Taking the case of connecting bracket 21 corresponding to the rear floor beam 410 as an example: the bracket body 2101 of connecting bracket 21 is a box-shaped component with openings on the lower and rear sides. The rear side of the bracket body 2101 forms an upwardly extending rear connecting edge 2102. The front, inner and outer sides of the bracket body 2101 also form a front connecting edge 2106, an inner connecting edge 2105 and an outer connecting edge 2103. The rear connecting edge 2102, the front connecting edge 2106, the inner connecting edge 2105 and the outer connecting edge 2103 are respectively attached to the surface of the rear floor beam 410, forming a closed space between the bracket body 2101 and the rear floor beam 410. A nut seat 2104 is welded to the lower side of the upper wall of the bracket body 2101. The fastener passes through the second support sleeve 24 and the upper wall of the bracket body 2101, and finally the nut seat 2104 is screwed in to achieve locking.

[0075] It should also be noted that the aforementioned scheme of designing the inverted trapezoidal foot 8 and the scheme of setting the connecting bracket 21 can be used alone or in combination.

[0076] In some embodiments, the second support sleeve 24 extends vertically through the inner longitudinal beam 1, with its upper end extending upwards out of the inner longitudinal beam 1 and abutting against the seat bracket 200, so as to form a gap space between the seat bracket 200 and the main body of the frame unit 110, thereby avoiding unnecessary interference that could affect the assembly of the seat bracket 200.

[0077] In some embodiments, if the support beam 18 is placed in the stepped groove 301, the outer longitudinal beam 3 is provided with a third support sleeve 25 and a fourth support sleeve 26. The third support sleeve 25 forms a third seat mounting position 6, and the fourth support sleeve 26 forms a fourth seat mounting position 7. The third support sleeve 25 extends vertically through the support beam 18, and the fourth support sleeve 26 extends vertically through the outer longitudinal beam 3. The upper end of the third support sleeve 25 extends upward beyond the support beam 18, and the upper end of the fourth support sleeve 26 extends upward beyond the inner longitudinal beam 1. Both the third support sleeve 25 and the fourth support sleeve 26 abut against the seat bracket 200 to form a gap between the seat bracket 200 and the main body of the frame unit 110, avoiding unnecessary interference that could affect the assembly of the seat bracket 200. Since the lower ends of the third support sleeve 25 and the fourth support sleeve 26 do not need to contact or connect with other components, the lower end face of the third support sleeve 25 does not protrude from the lower side of the support beam 18, and the lower end face of the fourth support sleeve 26 does not protrude from the lower side of the outer longitudinal beam 3. More specifically, the supporting beam 18 is a hollow beam, and the lower end face of the third supporting sleeve 25 is fitted and connected to the lower side wall of the inner cavity of the supporting beam 18; the outer longitudinal beam 3 is a hollow beam, and the lower end face of the fourth supporting sleeve 26 is fitted and connected to the lower side wall of the inner cavity of the outer longitudinal beam 3.

[0078] In some embodiments, the inner longitudinal beam 1 is provided with a first support sleeve 23, which forms a first seat mounting position 4. The first support sleeve 23 extends vertically through the inner longitudinal beam 1, and its upper end extends upward beyond the inner longitudinal beam 1. The upper end of the first support sleeve 23 abuts against the seat bracket 200 to form a gap between the seat bracket 200 and the main body of the frame unit 110, thus avoiding unnecessary interference that could affect the assembly of the seat bracket 200. The lower end face of the first support sleeve 23 does not protrude from the lower side of the inner longitudinal beam 1, or the lower end of the first support sleeve 23 extends beyond the inner longitudinal beam 1, making the structure of the first support sleeve 23 identical to that of the second support sleeve 24. That is, the structures of the front and rear ends of the outer longitudinal beam 3 are basically symmetrical. Therefore, it is not necessary to distinguish between the front and rear ends when manufacturing the inner longitudinal beam 1, reducing processing difficulty. Furthermore, it is also possible to assemble without distinguishing between the front and rear ends.

[0079] Optionally, if the lower end face of the first support sleeve 23 does not protrude from the lower side of the inner longitudinal beam 1, the inner longitudinal beam 1 is a hollow beam, and the lower end face of the first support sleeve 23 is fitted and connected to the lower side wall of the inner cavity of the inner longitudinal beam 1.

[0080] If the inner longitudinal beam 1 is a hollow beam, then the inner longitudinal beam 1 is provided with multiple inner support ribs 102 spaced apart in the inward and outward directions. The inner support ribs 102 support between the upper and lower side walls of the inner longitudinal beam 1, thereby improving the bending and torsional resistance of the inner longitudinal beam 1. Similarly, if the supporting crossbeam 18 is a hollow beam, then the supporting crossbeam 18 is provided with multiple transverse support ribs spaced apart in the front-back direction. The transverse support ribs support between the upper and lower side walls of the supporting crossbeam 18, thereby improving the bending and torsional resistance of the supporting crossbeam 18.

[0081] Based on the same inventive concept, this application also provides a vehicle including the aforementioned seat mounting frame 100.

[0082] Compared with the prior art, the vehicle provided in this embodiment adopts the aforementioned seat mounting frame 100 and a floor assembly consisting of a floor 400 and the seat mounting frame 100 to meet the installation requirements of different types of seats, achieving a compatible design for seat installation. Furthermore, the floor assembly can be produced through the same production line, eliminating the need to design different production lines and numerous adaptable parts for different seats. The production platform of the vehicle floor 400 has a high degree of platformization and fewer parts, thus reducing the pressure on warehousing and logistics.

[0083] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A seat mounting frame, characterized in that, include: Two frame units (110) arranged symmetrically on the left and right sides; Each of the frame units (110) includes an inner longitudinal beam (1), a diagonal beam (2), an outer longitudinal beam (3), a first seat mounting position (4), a second seat mounting position (5), a third seat mounting position (6) and a fourth seat mounting position (7), wherein the inner longitudinal beam (1) and the outer longitudinal beam (3) extend in the front-rear direction and are respectively connected to the floor (400); The first seat mounting position (4) is located at the front end of the inner longitudinal beam (1), the second seat mounting position (5) is located at the rear end of the inner longitudinal beam (1), the third seat mounting position (6) is located at the rear end of the outer longitudinal beam (3), and the fourth seat mounting position (7) is located at the front end of the outer longitudinal beam (3); the first seat mounting position (4) is located behind the fourth seat mounting position (7), and the second seat mounting position (5) is located behind the third seat mounting position (6); The two ends of the inclined beam (2) are respectively connected to the rear end of the inner longitudinal beam (1) and the rear end of the outer longitudinal beam (3).

2. The seat mounting frame as described in claim 1, characterized in that, The first seat mounting position (4), the third seat mounting position (6) and the fourth seat mounting position (7) are all located in front of the seat back (300), and the second seat mounting position (5) is located behind the seat back (300).

3. The seat mounting frame as described in claim 1, characterized in that, The inner longitudinal beam (1) is provided with an inner foot (8) below it, and the inner foot (8) is provided with a first floor (400) connection position (9). In the front-rear direction, the first floor (400) connection position (9) is located between the first seat mounting position (4) and the second seat mounting position (5). The outer foot (10) is also connected to the lower side of the outer longitudinal beam (3), and the outer foot (10) is provided with a second floor connection position (11).

4. The seat mounting frame as described in claim 3, characterized in that, The outer foot (10) is a hollow component that runs through the front and back and is closed on all four sides; below the outer longitudinal beam (3), a first diagonal brace (12), a second diagonal brace (13) and a vertical support (14) are arranged sequentially from the inside to the outside. The first diagonal brace (12) is connected between the inner lower edge of the outer foot (10) and the outer longitudinal beam (3), the second diagonal brace (13) is connected between the inner upper edge of the outer foot (10) and the outer longitudinal beam (3), and the vertical support (14) is connected between the inner upper edge of the outer foot (10) and the outer longitudinal beam (3). The distance between the front and rear sides of the inner foot (8) gradually decreases from top to bottom, and the connecting hole in the inner foot (8) is provided with weight-reducing hollow (802) in front and behind respectively.

5. The seat mounting frame as described in claim 3, characterized in that, In the front-to-back direction, the second floor connection position (11) is located between the third seat mounting position (6) and the fourth seat mounting position (7); taking the line connecting the third seat mounting position (6) and the second seat mounting position (5) as a reference line (15), and taking the orthographic projection of the second floor connection position (11) on the reference line (15) as a reference position (16), the distance between the fourth seat mounting position (7) and the reference position (16) is D1, and the distance between the reference position (16) and the third seat mounting position (6) is D2, with the ratio of D1 to D2 being 0.9 to 1.

1.

6. The seat mounting frame as described in claim 3, characterized in that, An anti-tilting beam (17) is also provided between the outer longitudinal beam (3) and the inner longitudinal beam (1). The outer end of the anti-tilting beam (17) is connected to the front end of the outer longitudinal beam (3), and the inner end is connected to the area on the inner longitudinal beam (1) corresponding to the connection position (9) of the first floor (400).

7. The seat mounting frame as described in claim 3, characterized in that, The frame unit (110) also includes a support beam (18), the outer end of which is connected to the rear end of the outer longitudinal beam (3), and the inner end is connected to the area on the inner longitudinal beam (1) corresponding to the connection position (9) of the first floor (400).

8. The seat mounting frame as described in claim 3, characterized in that, The seat mounting frame also includes a front crossbeam (19) and a rear crossbeam (20). The two ends of the front crossbeam (19) are respectively connected to the area where the first floor (400) connection position (9) is provided on the inner longitudinal beam (1) of the two frame units (110). The two ends of the rear crossbeam (20) are respectively connected to the rear end of the inner longitudinal beam (1) of the two frame units (110).

9. The seat mounting frame as described in claim 1, characterized in that, The seat mounting frame also includes a connecting bracket (21) corresponding to the second seat mounting position (5). The connecting bracket (21) is a box-shaped component and is connected to the floor (400). The rear end of the inner longitudinal beam (1) is provided with a downwardly extending second support sleeve (24). The second support sleeve (24) forms the second seat mounting position (5). The lower surface of the second support sleeve (24) abuts against the upper wall of the connecting bracket (21). The fasteners corresponding to the second seat mounting position (5) pass through the second support sleeve (24) and the upper wall of the connecting bracket (21) in sequence to lock the inner longitudinal beam (1) and the connecting bracket (21).

10. A vehicle, characterized in that, Includes the seat mounting frame as described in any one of claims 1-9.

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