Front floor assembly and vehicle

Abstract

The utility model relates to the technical field of vehicle body structures, and particularly provides a front floor assembly and a vehicle. The front floor assembly comprises a floor main body and a plurality of groups of seat cross beams arranged on the floor main body, the floor body comprises a middle channel plate and floor panels symmetrically arranged on the two sides of the middle channel plate. Each group of seat cross beams comprises two seat cross beams which are oppositely arranged in the left-right direction of the vehicle, the two seat cross beams are arranged on the floor panels on the two sides respectively, and each seat cross beam is connected with the middle channel plate in a lap joint mode. According to the front floor assembly, when a vehicle is a pure electric vehicle, the battery pack is matched with the front floor assembly, and the overall structural strength of the bottom of a vehicle body can be guaranteed; when vehicles are fuel vehicles, hybrid vehicles and the like and large-size battery packs do not need to be configured, the beam body structure can be additionally arranged at the bottom of the floor body to guarantee the overall structural performance of the front floor assembly, and therefore the front floor structure scheme with good universality is provided.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle body structures, and particularly relates to a front floor assembly. In addition, the utility model also relates to a vehicle. Background Art

[0002] The front floor assembly is located in the lower body and is a part of the vehicle body frame. While providing safety for the vehicle body, it also provides installation points for key components such as the front row seats and the co-driver instrument panel assembly. In today's increasingly competitive automotive market, a vehicle model often offers multiple sub-models with different power configurations for users to choose from.

[0003] In the existing design of the front floor assembly, for the situation where the front floor assembly needs to adapt to multiple different power configurations such as fuel, pure electric, and hybrid, it is necessary to design multiple front floor assembly products with different structures针对性地 to meet the installation requirements of different power configurations and the strength requirements of the vehicle body structure.

[0004] However, the front floor assembly designed specifically for a sub-model cannot meet the requirements of other models and has poor versatility. It is necessary to re-design the front floor assembly for different models, resulting in a significant increase in the R & D and manufacturing costs of the vehicle. Summary of the Utility Model

[0005] In view of this, the utility model aims to propose a front floor assembly to provide a front floor structure solution with good versatility.

[0006] To achieve the above object, the technical solution of the utility model is realized as follows:

[0007] A front floor assembly includes a floor main body and a plurality of groups of seat crossbeams arranged on one side above the floor main body; the floor main body includes a middle channel plate and floor panels symmetrically arranged on both sides of the middle channel plate; each group of seat crossbeams consists of two crossbeams arranged opposite to each other in the left-right direction of the vehicle, and the two seat crossbeams are respectively arranged on the floor panels on both sides, and each seat crossbeam is lapped and connected with the middle channel plate. [[ID=XX]]

[0008] Further, the cross-section of the middle channel plate is in a "U" shape, and a plurality of lower reinforcing crossbeams are arranged in the middle channel inner cavity surrounded by the top plate body and the side plate bodies of the middle channel plate; each lower reinforcing crossbeam corresponds to each group of seat crossbeams, and in the left-right direction of the vehicle, the lower reinforcing crossbeam is arranged opposite to the two seat crossbeams in the same group. [[ID=XX]] [[ID=XX]]

[0009] It should be noted that there is an unclear expression "针对性地" in the original text, which is translated as "针对性地" in the English translation. It may need to be further adjusted according to the actual meaning. Also, there seems to be some incorrect or incomplete tags in the original text (such as the repeated -

[0002] and -

[0004] which may be formatting or numbering issues). The translation is based on the best understanding of the provided text.Furthermore, in the cross-section of the lower reinforcing beam, the middle part of the lower reinforcing beam is arched downwards; the front and rear sides of the lower reinforcing beam have upper overlapping plates that overlap the top plate, and the left and right ends of the lower reinforcing beam have lower overlapping plates that overlap the side plates on both sides respectively.

[0010] Furthermore, the bottom sides of the central channel plate are respectively formed with outwardly bent overlapping flanges, and the floor panel is laid on the overlapping flanges on the same side, and the floor panel is welded to the overlapping flanges.

[0011] Furthermore, the floor panel overlaps the upper side of the overlapping flange, the edge of the floor panel is welded to the surface of the overlapping flange, the edge of the overlapping flange is welded to the surface of the floor panel, and the overlapping part of the floor panel and the overlapping flange is connected by spot welding.

[0012] Furthermore, the weld seams at the edges of the floor panel are coated with upper weld sealant, the weld seams at the edges of the overlapping flange are coated with lower weld sealant, and the spot weld areas of the floor panel and the overlapping flange are coated with spot weld sealant.

[0013] Furthermore, in the cross-section of the seat beam, the middle part of the seat beam is arched upwards, and the front and rear sides of the seat beam are formed with first side overlapping flanges that overlap the floor panel; corresponding to the location of the upper weld sealant, a notch-shaped first adhesive avoidance opening is provided on the first side overlapping flange.

[0014] Furthermore, the seat crossbeams are arranged in two sets at intervals in the front-rear direction of the vehicle, and the front floor assembly also includes two front floor lower longitudinal beams located at the bottom of the floor body, and a front floor lower crossbeam located between the two front floor lower longitudinal beams; the two front floor lower longitudinal beams are respectively located below the floor panels on both sides, and the front floor lower crossbeam is located between the two sets of seat crossbeams.

[0015] Furthermore, the front floor lower crossbeam has second side overlapping flanges formed on both its front and rear sides, which overlap the floor panel. Corresponding to the location of the lower weld sealant, a notch-shaped second adhesive avoidance opening is provided on the second side overlapping flange; and / or, the end of the front floor lower crossbeam has an overlapping end plate formed, which overlaps the side of the front floor lower longitudinal beam and is fixedly connected to the front floor lower longitudinal beam by connecting bolts.

[0016] Compared with the prior art, this utility model has the following advantages:

[0017] (1) The front floor assembly of this utility model adopts a splicing form of a central channel plate and a floor panel to form a typical front floor structure. A seat crossbeam is set on one side above the floor panel to provide a reliable installation base for the front seats of the vehicle. Since the seat crossbeam and the raised part of the central channel plate are both located on one side above the floor panel, the space occupied by the front floor assembly in the vehicle height direction can be minimized by reasonably setting the height of the seat crossbeam. Furthermore, a regular battery pack installation space suitable for arranging the battery pack can be formed under the main body of the floor. When the vehicle is a pure electric vehicle, the battery pack is set in the battery pack installation space. The battery pack and the front floor assembly work together to ensure the overall structural strength of the vehicle body bottom. When the vehicle is a fuel or hybrid vehicle and does not need to be equipped with a large-sized battery pack, the overall structural performance of the front floor assembly can be ensured by adding a beam structure at the bottom of the main body of the floor. Thus, the front floor assembly is compatible and applicable to various vehicle types such as pure electric and fuel, providing a front floor structure solution with good versatility.

[0018] (2) A lower reinforcing crossbeam is installed in the inner cavity of the middle channel plate, and the lower reinforcing crossbeam and the corresponding two seat crossbeams are set on the same straight line in the left and right direction of the vehicle. The seat crossbeams on both sides and the lower reinforcing crossbeam together form a crossbeam structure that is connected as one, which can greatly increase the structural strength of the front floor assembly in the left and right direction of the vehicle, improve the anti-collision performance of the vehicle when it suffers a side impact, reduce the degree of body deformation caused by the side impact, and thus protect the safety of the people in the cabin.

[0019] (3) The lower reinforcing crossbeam adopts an arched structure, which can improve its support strength in the left and right directions of the vehicle. By setting an upper overlapping plate on the side of the lower reinforcing crossbeam and a lower overlapping plate at the end of the lower reinforcing crossbeam, the connection stability between the lower reinforcing crossbeam and the central channel plate can be effectively enhanced, and a cavity structure that is conducive to enhancing the structural strength can be separated in the inner cavity of the central channel. The end of the seat crossbeam can be provided with an end overlapping flange for overlapping and fixing the side plate of the central channel plate. The end overlapping flange overlaps the outside of the side plate, and the lower overlapping plate overlaps the inside of the side plate. The end overlapping flange, the side plate, and the lower overlapping plate form a three-layer overlapping structure, which can be fixed together by spot welding, thereby effectively increasing the connection strength of the connection between the seat crossbeam and the lower reinforcing crossbeam.

[0020] (4) By using the overlapping flange set at the bottom of the central channel plate to overlap with the inner edge of the floor panel, and by welding to fix them together, the floor panel and the central channel plate can be firmly connected into one body to form a stable floor body.

[0021] (5) For the overlapping of the floor panel and the overlapping flange, while spot welding the overlapping parts of the two together, the overlapping flange and the edge of the floor panel are welded together to form a triple welding connection structure, which can greatly improve the connection reliability between the floor panel and the middle channel plate.

[0022] (6) For the spot welds between the floor panel and the overlapping flange, as well as the two weld seams, by applying sealant such as spot weld sealant, upper weld sealant and lower weld sealant, the sealing performance of the overlapping part of the floor panel and the middle channel plate can be guaranteed, thereby improving the airtightness of the vehicle floor and preventing water leakage from the vehicle floor when the vehicle is wading through water.

[0023] (7) A first adhesive avoidance opening is provided on the first side overlap flange of the seat beam, which can minimize the adhesive gap size of the area covered by the seat beam where the upper weld sealant cannot be applied. Combined with the redundant setting of the lower weld sealant, the sealing performance of the overlapping part of the floor panel and the middle channel plate where the seat beam is located can be effectively guaranteed.

[0024] (8) Two sets of seat crossbeams are set at intervals in front and back, which not only helps to improve the overall structural strength of the front floor assembly, but also provides a stable installation condition for the vehicle seats; while a front floor under crossbeam is set between the two sets of seat crossbeams, and two front floor under longitudinal beams are arranged symmetrically under the floor panels on both sides. In the absence of a battery pack under the floor body, the structural strength of the bottom of the floor body can be effectively improved, and the impact resistance of the front floor assembly can be improved in the front-rear and left-right directions of the vehicle.

[0025] (9) The second side overlap flanges on both sides of the front floor underbeam can be fixed to the floor panel by spot welding. Corresponding to the lower weld sealant, a second adhesive avoidance opening is set on the second side overlap flange. This can also minimize the adhesive gap size in the area covered by the front floor underbeam where the lower weld sealant cannot be applied. Combined with the redundant setting of the upper weld sealant, the sealing performance of the overlapping part of the floor panel and the middle channel plate at the location of the seat beam can be effectively guaranteed.

[0026] Another object of this invention is to provide a vehicle equipped with the front floor assembly described herein. The vehicle of this invention possesses the technical advantages of the aforementioned front floor assembly. Attached Figure Description

[0027] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model. The directional terms such as front / back, up / down, etc., used therein are only used to indicate relative positional relationships and do not constitute an improper limitation of this utility model. In the drawings:

[0028] Figure 1 This is a three-dimensional structural diagram of the front floor assembly described in an embodiment of the present utility model;

[0029] Figure 2 for Figure 1 Cross-sectional view of the part shown in AA;

[0030] Figure 3 for Figure 1 The diagram shows a three-dimensional structure of the front floor assembly after the addition of the front floor lower longitudinal beam, the front floor lower crossbeam, and the lower reinforcing crossbeam.

[0031] Figure 4 for Figure 3 The diagram shows a three-dimensional structure of the front floor assembly with the main floor body hidden.

[0032] Figure 5 This is a schematic diagram of the lower reinforcing crossbeam as described in an embodiment of the present invention;

[0033] Figure 6 for Figure 3 The diagram shows a three-dimensional structural representation of the front floor assembly from the lower side view.

[0034] Figure 7 This is a three-dimensional structural diagram of the front floor underbeam and liner plate described in an embodiment of the present utility model;

[0035] Figure 8 for Figure 7 The bottom view of the front floor underpass beam shown;

[0036] Figure 9 for Figure 7 Left view of the front floor underpass beam shown;

[0037] Figure 10 for Figure 3 A top view of the front floor assembly shown;

[0038] Figure 11 for Figure 10 A magnified view of the area shown in section B;

[0039] Figure 12 for Figure 3 A bottom view of the front floor assembly shown;

[0040] Figure 13 for Figure 12 A magnified view of the area shown in C.

[0041] Figure 14 for Figure 12 Cross-sectional view of the part shown in DD;

[0042] Figure 15for Figure 14 A magnified view of the area shown in E.

[0043] Explanation of reference numerals in the attached figures:

[0044] 1. Floor body; 10. Central channel plate; 100. Central channel inner cavity; 101. Top plate; 102. Side plate; 103. Overlapping flange; 11. Floor panel; 12. Sealant; 120. Spot weld sealant; 121. Upper weld sealant; 122. Lower weld sealant;

[0045] 2. Seat crossbeam; 201. First side overlapping flange; 202. End overlapping flange; 20. First adhesive application clearance; 21. End reinforcing plate; 3. Battery pack installation space;

[0046] 4. Front floor underpass beam; 400. Second side lap flange; 40. Second adhesive clearance opening; 41. Lap end plate; 42. Liner plate; 43. Connecting bolts;

[0047] 5. Front floor under-mount longitudinal beam; 50. Inner cavity of the longitudinal beam;

[0048] 6. Lower reinforcing crossbeam; 600. Upper lap plate; 601. Lower lap plate. Detailed Implementation

[0049] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0050] In the description of this utility model, it should be stated that if terms indicating orientation or positional relationship, such as "up," "down," "left," "right," "front," "rear," "inner," and "outer," appear, they are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed or operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Taking the vehicle described in this utility model as an example, the directional terms such as "up," "down," "left," "right," "front," and "rear" used in the embodiments are defined based on the vehicle's vertical direction (also known as the height direction), horizontal direction (also known as the width direction), and front-back direction (also known as the length direction). Specifically, as shown in the accompanying drawings, the X direction is the vehicle's front-back direction, where the side pointed by the arrow is "front," and vice versa. The Y direction is the vehicle's horizontal direction, where the side pointed by the arrow is "left," and vice versa. The Z direction is the vehicle's vertical direction, where the side pointed by the arrow is "up," and vice versa. "Inner" and "outer" are defined based on the outline of the corresponding components. For example, "inner" and "outer" are defined based on the outline of the vehicle. The side of the vehicle outline closer to the middle of the vehicle is "inner", and the other side is "outer".

[0051] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances. The limiting terms such as "first," "second," "A," "B," "C," and "D" appearing in the description of this utility model are merely for distinguishing similar features in different locations, attributions, or uses, in order to avoid ambiguity and confusion, and should not be construed as indicating or implying relative importance.

[0052] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0053] Example 1

[0054] This embodiment relates to a front floor assembly, providing a front floor structure solution with good versatility; one exemplary structure is as follows: Figure 1 and Figure 2 As shown.

[0055] Overall, the front floor assembly includes a floor body 1 and several sets of seat crossbeams 2 located on one side above the floor body 1. The floor body 1 includes a center channel plate 10 and floor panels 11 symmetrically arranged on both sides of the center channel plate 10. Each set of seat crossbeams 2 consists of two beams facing each other in the left-right direction of the vehicle. The two seat crossbeams 2 are respectively located on the floor panels 11 on both sides, and each seat crossbeam 2 overlaps and connects to the center channel plate 10.

[0056] It should be noted that based on the above overall design concept, the technical solution of the present utility model can adopt various different specific implementation structures, forms or configuration sequences. For example, beam structures such as lower strengthening crossbeams 6 and front floor lower crossbeams 4 can be added below the above-mentioned floor main body 1 to enhance the overall structural strength of the front floor assembly, or any beam can be set, so as to reserve a regular battery pack installation space 3 below the floor main body 1 for installing the battery pack. The specific setting sequence, assembly method, etc. of the middle channel plate 10, floor panel 11 and seat crossbeam 2 can also be flexibly adjusted. For parts required for the implementation of the overall solution but not involved in the above overall setting, reasonable and flexible design can be made by referring to mature setting means in the art, actual situations during implementation, etc. The following specific implementation solutions of this embodiment are only one of the better ones among the many solutions that can be formed by the above various combinations and their variations. In actual implementation, those skilled in the art can make flexible adjustments and improvements in combination with actual situations. Obviously, the many solutions formed by the combinations of the above various specific forms and their variations, as well as the specific implementation solutions of this embodiment, are all within the protection scope of the present utility model.

[0057] When the front floor assembly of the present utility model is used in pure electric vehicle models, since a large-sized battery pack needs to be configured at the bottom of the vehicle, as Figure 2 shown, the bottom of the floor main body 1 can be kept flat, without setting any beam structure, but the battery pack is fixedly installed at the bottom of the floor main body 1, so that the floor main body 1 is fixedly connected to the upper shell of the battery pack as a whole, thereby ensuring the overall structural stability of the front floor assembly. In this case, the battery pack and the floor main body 1 basically share the same floor surface height, and the height dimension of the floor panel 11 can be set smaller, so as to provide good height space conditions for the cockpit; due to the presence of the battery pack, it has a good strengthening effect on the structure of the front floor assembly, making the front floor assembly meet the requirements of good side impact resistance.

[0058] When the front floor assembly of the present utility model is used in hybrid, fuel and other vehicle models, since there is sufficient space below the floor main body 1, beam structures such as crossbeams and longitudinal beams can be added to enhance the overall structural strength of the front floor assembly to meet the protection requirements during side impacts.

[0059] Specifically, as Figure 3 、 Figure 4 shown, the cross-section of the middle channel plate 10 of this embodiment is in a "ji" shape, and several lower strengthening crossbeams 6 are provided in the middle channel inner cavity 100 surrounded by the top plate body 101 and side plate bodies 102 of the middle channel plate 10; each lower strengthening crossbeam 6 corresponds to each group of seat crossbeams 2, and in the left-right direction of the vehicle, the lower strengthening crossbeam 6 is arranged opposite to two seat crossbeams 2 in the same group.

[0060] A lower reinforcing crossbeam 6 is installed in the inner cavity 100 of the central channel plate 10, and the lower reinforcing crossbeam 6 and the corresponding two seat crossbeams 2 are arranged on the same straight line in the left and right direction of the vehicle. The seat crossbeams 2 on both sides and the lower reinforcing crossbeam 6 together form a crossbeam structure that is connected as one unit. This can greatly increase the structural strength of the front floor assembly in the left and right direction of the vehicle, improve the vehicle's anti-collision performance when subjected to side impact, reduce the degree of body deformation caused by side impact, and thus protect the safety of the people in the cabin.

[0061] Regarding the specific configuration of the lower reinforcing beam 6, there are naturally several different structural options available. In this embodiment, such as... Figure 5 As shown, in the cross-section of the lower reinforcing beam 6, the middle part of the lower reinforcing beam 6 is arched downward; the front and rear sides of the lower reinforcing beam 6 have upper overlapping plates 600 that overlap with the top plate 101, and the left and right ends of the lower reinforcing beam 6 have lower overlapping plates 601 that overlap with the side plates 102 on both sides respectively.

[0062] The lower reinforcing crossbeam 6 adopts an arched structure, which can improve its own support strength in the left and right directions of the vehicle. By setting an upper overlapping plate 600 on the side of the lower reinforcing crossbeam 6 and a lower overlapping plate 601 at the end of the lower reinforcing crossbeam 6, the connection stability between the lower reinforcing crossbeam 6 and the middle channel plate 10 can be effectively enhanced, and a cavity structure that is conducive to enhancing the structural strength can be separated in the inner cavity 100 of the middle channel. Meanwhile, the seat crossbeam 2 can adopt a similar arched cross-section structure. The first side overlap flange 201 of the seat crossbeam 2 can overlap and spot weld to the floor panel 11. The end of the seat crossbeam 2 can be provided with an end overlap flange 202 for overlapping and fixing the side plate 102 of the middle channel plate 10. The end overlap flange 202 overlaps the outside of the side plate 102, and the lower overlap plate 601 overlaps the inside of the side plate 102. The end overlap flange 202, the side plate 102, and the lower overlap plate 601 form a three-layer overlapping structure, which can be fixed together by spot welding, thereby effectively increasing the connection firmness of the connection between the seat crossbeam 2 and the lower reinforcing crossbeam 6.

[0063] The number of seat crossbeams 2 can, of course, be adjusted flexibly. In this embodiment, for example... Figure 6 As shown, the seat crossbeams 2 are arranged in two sets at intervals in the front-rear direction of the vehicle; at the same time, the front floor assembly of this embodiment also includes two front floor lower longitudinal beams 5 located at the bottom of the floor body 1, and a front floor lower crossbeam 4 located between the two front floor lower longitudinal beams 5. The two front floor lower longitudinal beams 5 are respectively located below the floor panels 11 on both sides, and the front floor lower crossbeam 4 is located between the two sets of seat crossbeams 2, and its position is basically corresponding to the B-pillar of the vehicle.

[0064] The placement of two sets of seat crossbeams 2 at intervals not only enhances the overall structural strength of the front floor assembly but also provides a stable installation condition for the vehicle seats. A front floor under-beam 4 is positioned between the two sets of seat crossbeams 2, while two front floor under-beam longitudinal beams 5 are symmetrically arranged below the floor panels 11 on both sides. Without a battery pack under the floor body 1, this effectively improves the structural strength of the bottom of the floor body 1, enhancing the front floor assembly's impact resistance in both the front-rear and lateral directions. Furthermore, the front floor under-beam 4 and the seat crossbeams 2 are staggered in the front-rear direction, preventing the front floor under-beam 4 from covering the weld seam between the floor panel 11 and the center tunnel plate 10, which would otherwise be directly opposite the position covered by the seat crossbeam 2. This ensures that the upper weld sealant 121 and the lower weld sealant 122 do not break at the same location, thus guaranteeing the sealing reliability of the overlap between the floor panel 11 and the center tunnel plate 10.

[0065] Based on the above settings, preferably, Figure 7 , Figure 8 and Figure 9 As shown, a bent overlapping end plate 41 can be formed at the end of the front floor underbeam 4, and this overlapping end plate 41 is overlapped with the side of the front floor underbeam 5. The overlapping end plate 41 and the front floor underbeam 5 are fixedly connected by connecting bolts 43. By setting the overlapping end plate 41 at the end of the front floor underbeam 4, and utilizing the overlapping end plate 41 to overlap with the side wall of the front floor underbeam 5, the contact area between the ends of the front floor underbeam 5 and the front floor underbeam 4 can be effectively increased, providing good conditions for reliable connection between the two. In practical implementation, a liner plate 42 can be installed in the inner cavity 50 of the longitudinal beam 5 under the front floor. The liner plate 42 and the overlapping end plate 41 are respectively attached to the inner and outer sides of the side wall of the longitudinal beam 5 under the front floor. The overlapping end plate 41, the liner plate 42 and the side wall of the longitudinal beam 5 under the front floor are fixed together by the connecting bolts 43 that penetrate these three layers of plates, thereby ensuring the reliability of the connection between the crossbeam 4 under the front floor and the longitudinal beam 5 under the front floor.

[0066] like Figure 10 , Figure 11 As shown, in this embodiment, the bottom sides of the central channel plate 10 are respectively formed with outwardly bent overlapping flanges 103. The floor panel 11 is overlapped on the overlapping flanges 103 on the same side. Based on the overlap, the floor panel 11 and the overlapping flanges 103 are welded together. Through the overlapping flanges 103 provided at the bottom of the central channel plate 10, which overlap and cooperate with the inner edge of the floor panel 11, and are fixed by welding, the floor panel 11 and the central channel plate 10 can be firmly connected into one body to form a stable floor body 1.

[0067] To ensure a smooth finish at the overlap between the central channel panel 10 and the floor panel 11, a sealant 12 can be applied to the overlap area. Specifically, such as... Figures 12 to 15 As shown, in this embodiment, the floor panel 11 overlaps the upper side of the overlapping flange 103. The edge of the floor panel 11 is welded to the surface of the overlapping flange 103, and the edge of the overlapping flange 103 is welded to the surface of the floor panel 11. The overlapping parts of the floor panel 11 and the overlapping flange 103 are connected by spot welding. Regarding the overlap between the floor panel 11 and the overlapping flange 103, while spot welding the overlapping parts to secure them, gap welding is also performed on the edges of the overlapping flange 103 and the floor panel 11 to form a triple-welded connection structure, which can greatly improve the connection reliability between the floor panel 11 and the central channel plate 10.

[0068] Based on the above-mentioned weld distribution, in this embodiment, an upper weld sealant 121 is applied to the weld seams at the edges of the floor panel 11, a lower weld sealant 122 is applied to the weld seams at the edges of the overlapping flange 103, and a spot weld sealant 120 is applied to the spot weld areas between the floor panel 11 and the overlapping flange 103. By applying sealant 12 such as spot weld sealant 120, upper weld sealant 121, and lower weld sealant 122 to the spot weld areas between the floor panel 11 and the overlapping flange 103, as well as the two weld seams, the sealing performance of the overlapping area between the floor panel 11 and the central channel plate 10 can be ensured, thereby improving the airtightness of the vehicle floor and preventing water leakage from the vehicle floor when the vehicle is wading through water.

[0069] Furthermore, in the cross-section of the seat beam 2, the middle part of the seat beam 2 in this embodiment is arched upwards, and the front and rear sides of the seat beam 2 are formed with first side overlapping flanges 201 that overlap the floor panel 11; as Figure 11 As shown, corresponding to the location of the weld sealant 121, a notch-shaped first adhesive application clearance opening 20 can be provided on the first side overlapping flange 201.

[0070] A first adhesive avoidance opening 20 is provided on the first side overlap flange 201 of the seat crossbeam 2, which can minimize the adhesive gap size of the area covered by the seat crossbeam 2 where the upper weld sealant 121 cannot be applied. Combined with the redundant setting of the lower weld sealant 122, the sealing performance of the overlapping part of the floor panel 11 and the middle channel plate 10 where the seat crossbeam 2 is located can be effectively guaranteed.

[0071] In order to ensure the structural strength of the end of the seat beam 2, an end reinforcing plate 21 can be installed on the end of the seat beam 2. The end reinforcing plate 21 and the end of the seat beam 2 are stacked to improve the structural strength of the end of the seat beam 2. The end reinforcing plate 21 can also cover the first adhesive avoidance opening 20.

[0072] In addition, the front floor lower cross beam 4 of this embodiment is preferably also structured with a "Ji" - shaped cross - section. In the left - right direction of the vehicle, the front floor lower cross beam 4 can be arranged in a shape - following manner along the overall trend of the floor main body 1. The part of the front floor lower cross beam 4 located in the central channel cavity 100 of the central channel plate 10 can be arched upwards in a shape - following manner and be accommodated into the central channel cavity 100. As Figure 13 shown, on the front and rear sides of the front floor lower cross beam 4 of this embodiment, second side - lapping flanges 400 lapping on the floor panel 11 are formed. Corresponding to the position of the lower weld sealant 122, a notch - shaped second glue - applying avoidance port 40 is provided on the second side - lapping flange 400.

[0073] The second side - lapping flanges 400 on both sides of the front floor lower cross beam 4 are fixedly connected to the plate body of the floor panel 11 by spot welding. Corresponding to the lower weld sealant 122, the second glue - applying avoidance port 40 is set on the second side - lapping flange 400. Similarly, the break - glue size where the lower weld sealant 122 cannot be coated on the covered part of the front floor lower cross beam 4 can be minimized. With the redundant setting of the upper weld sealant 121, the sealing performance of the overlapping part of the floor panel 11 and the central channel plate 10 where the seat cross beam 2 is located can be effectively guaranteed.

[0074] In summary, for the front floor assembly of this embodiment, the floor main body 1 adopts the form of splicing the central channel plate 10 and the floor panel 11 to form a typical front - floor structure. A seat cross beam 2 is arranged on one side above the floor panel 11, providing a reliable installation basis for the vehicle's front - row seats. Since both the seat cross beam 2 and the upward - bulging part of the central channel plate 10 are located on one side above the floor panel 11, by reasonably setting the height dimension of the seat cross beam 2, the space - occupation scale of the front floor assembly in the vehicle's height direction can be minimized, and a regular battery - pack installation space 3 suitable for configuring a battery pack can be formed below the floor main body 1. When the vehicle is a pure - electric vehicle model, by setting a battery pack in the battery - pack installation space 3, the cooperation between the battery pack and the front floor assembly can ensure the overall structural strength of the vehicle body bottom. When the vehicle is a fuel - powered, hybrid, or other vehicle models that do not require a large - size battery pack, the overall structural performance of the front floor assembly can be ensured by adding a beam structure at the bottom of the floor main body 1. Thus, the front floor assembly is applicable to various vehicle models such as pure - electric and fuel - powered vehicles, providing a front - floor structure solution with good versatility.

[0075] Embodiment Two

[0076] This embodiment relates to a vehicle equipped with the front floor assembly provided in Embodiment One.

[0077] In typical front floor assembly designs, given the need for the front floor assembly to adapt to various powertrain configurations such as gasoline, pure electric, and hybrid, multiple front floor assembly products with different structures need to be designed to meet the installation requirements of different powertrain configurations and satisfy the strength requirements of the vehicle body structure.

[0078] For example, the front floor assembly designed for pure electric powertrains has limited cross-sectional area of ​​the seat beam cavity due to the need to accommodate the installation of a large electric battery pack. However, the battery pack can also withstand a certain amount of impact force. Therefore, the structural dimensions and impact resistance of this front floor assembly are relatively low. If this front floor assembly is directly used for gasoline-powered configurations, the lack of impact force absorption by the battery pack means that the front floor assembly cannot meet the strength requirements of the vehicle body structure. In the event of a side impact, this would lead to severe deformation of the passenger compartment and reduced vehicle safety performance.

[0079] However, front floor assemblies designed specifically for a particular vehicle model cannot be applied to the requirements of other models, resulting in poor versatility. This necessitates redesigning the front floor assembly for different models, significantly increasing vehicle research and development and manufacturing costs.

[0080] The front floor assembly of this utility model has good versatility. Since the floor body 1 adopts a split structure, which is welded together by the middle channel plate 10 and the floor panel 11, it has the advantages of high structural commonality, light weight and low cost. Moreover, by setting multiple sealing adhesives 12 at the splicing part of the middle channel plate 10 and the floor panel 11, the sealing effect of the splicing part is guaranteed.

[0081] Based on the configuration of the floor body 1, a lower reinforcing crossbeam 6 and a front floor lower crossbeam 4 can be selectively added to provide support and reinforcement for the front floor assembly in the left-right direction of the vehicle. The middle part of the front floor lower crossbeam 4 is curved and set in the inner cavity 100 of the central channel plate 10, with reserved space in the central channel plate 10 to fully consider the needs of the transmission shaft and exhaust system of fuel vehicles; moreover, the upward curved shape of the middle part of the front floor lower crossbeam 4 can absorb the impact force through its own weakened deformation.

[0082] Overall, the front floor assembly of this utility model can meet the needs of various power configurations of vehicles, and retains the commonality of major components, making it highly adaptable and conducive to cost reduction. While meeting the safety performance requirements of the vehicle, it also reserves space for the arrangement of key components such as the battery pack in the vehicle chassis. The welding and sealing process between the floor panel 11 and the central channel plate 10 has few limitations, is highly operable, and has high water tightness, which can greatly reduce the risk of water leakage from the vehicle floor.

[0083] The above description is merely a preferred embodiment of this utility model. Detailed explanations of configurations, examples of specific structural arrangements, and descriptions of assembly and connection methods are provided to ensure sufficient disclosure so that those skilled in the art can better implement this utility model, and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A front floor assembly, characterized in that: a floor body (1) and two groups of seat cross beams (2) arranged on one side of the floor body (1) are included; the floor body (1) includes a center tunnel plate (10) and floor panels (11) symmetrically arranged on both sides of the center tunnel plate (10); each group of the seat cross beams (2) is two seat cross beams (2) arranged opposite in the left-right direction of the vehicle, and the two seat cross beams (2) are arranged on the floor panels (11) on both sides respectively, and each seat cross beam (2) is connected to the center tunnel plate (10) by overlapping; the front floor assembly further includes two front floor lower longitudinal beams (5) arranged at the bottom of the floor body (1) and a front floor lower cross beam (4) arranged between the two front floor lower longitudinal beams (5); the two front floor lower longitudinal beams (5) are respectively located below the floor panels (11) on both sides, and the front floor lower cross beam (4) is arranged between the two groups of seat cross beams (2). 2.The front floor assembly according to claim 1, characterized in that: the cross section of the center tunnel plate (10) is in the shape of a Chinese character "j", and a plurality of lower reinforcing cross beams (6) are arranged in a center tunnel inner cavity (100) surrounded by a top plate body (101) and a side plate body (102) of the center tunnel plate (10); each lower reinforcing cross beam (6) corresponds to each group of seat cross beams (2), and in the left-right direction of the vehicle, the lower reinforcing cross beam (6) is arranged opposite to the two seat cross beams (2) in the same group. 3.The front floor assembly according to claim 2, characterized in that: in the cross section of the lower reinforcing cross beam (6), the middle part of the lower reinforcing cross beam (6) is arranged in a downward arch shape; the front and rear sides of the lower reinforcing cross beam (6) have upper overlapping plates (600) overlapping on the top plate body (101), and the left and right ends of the lower reinforcing cross beam (6) have lower overlapping plates (601) overlapping on the side plate bodies (102) on both sides respectively. 4.The front floor assembly according to any one of claims 1 to 3, characterized in that: the bottom of the center tunnel plate (10) is formed with outwardly bent overlapping flanges (103) on both sides, the floor panels (11) are arranged on the overlapping flanges (103) on the same side, and the floor panels (11) are welded to the overlapping flanges (103). 5.The front floor assembly according to claim 4, characterized in that: the floor panels (11) are arranged on the side above the overlapping flanges (103), the edges of the floor panels (11) are welded to the surfaces of the overlapping flanges (103), the edges of the overlapping flanges (103) are welded to the surfaces of the floor panels (11), and the overlapping parts of the floor panels (11) and the overlapping flanges (103) are connected by spot welding. 6.The front floor assembly according to claim 5, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ ​ The welding seam of the edge of the floor panel (11) is coated with upper welding seam sealant (121), the welding seam of the edge of the lap flange (103) is coated with lower welding seam sealant (122), and the spot welding position of the floor panel (11) and the lap flange (103) is coated with spot welding position sealant (120).

7. The front floor assembly of claim 6, wherein: In the cross section of the seat cross beam (2), the middle part of the seat cross beam (2) is arranged to be upwardly arched, and the front and rear sides of the seat cross beam (2) are formed with first side lap flanges (201) which lap on the floor panel (11); and corresponding to the position of the upper welding seam sealant (121), a first gap-shaped glue coating avoiding gap (20) is arranged on the first side lap flange (201).

8. The front floor assembly of claim 7, wherein: The front and rear sides of the front floor lower cross beam (4) are formed with second side lap flanges (400) which lap on the floor panel (11), and corresponding to the position of the lower welding seam sealant (122), a second gap-shaped glue coating avoiding gap (40) is arranged on the second side lap flange (400); And / or, the end part of the front floor lower cross beam (4) is formed with a lap end plate (41) which laps on the side part of the front floor lower longitudinal beam (5) and is fixedly connected with the front floor lower longitudinal beam (5) through connecting bolts (43).

9. A vehicle, characterized in that: The vehicle is provided with the front floor assembly according to any one of claims 1 to 8.

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