CN218967035U - Rear floor assembly and vehicle - Google Patents

Abstract

The utility model discloses a rear floor assembly and a vehicle, wherein the rear floor assembly comprises: the back floor is provided with first reinforcing part, second reinforcing part and third reinforcing part on the back floor, and first reinforcing part and second reinforcing part are annular, and the second reinforcing part sets up in the inboard of first reinforcing part, and the third reinforcing part sets up in the inboard of second reinforcing part. Through set up first enhancement portion, second enhancement portion and third enhancement portion on the back floor, can optimize the self structure of back floor, also can improve the rigidity and the modal frequency of back floor assembly, effectively avoid road surface excitation frequency, and then reach the purpose of reducing back floor vibration, improve passenger riding comfort in the car.

Description

Rear floor assembly and vehicle

Technical Field

The utility model relates to the technical field of vehicles, in particular to a rear floor assembly and a vehicle.

Background

At present, a rear floor in a vehicle is a large plate, the mode and rigidity of the large plate are low, the large plate is close to a rear wheel excitation point, the rigidity and mode of the large plate are required to be improved to avoid main excitation frequencies of a road surface, the mode frequency planning is required to be carried out between the large floors according to a frequency avoidance principle, the occurrence of in-vehicle booming caused by floor resonance is avoided, and NVH performance is reduced.

In the related art, the rear floor reinforcing structure is generally lifted by a beam, the reinforcing range is insufficient, and the requirements of increasing the size of a vehicle body and improving the performance are not met.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. It is therefore an object of the present utility model to provide a rear floor assembly that avoids the road excitation frequency and achieves the purpose of reducing floor vibration.

The utility model further proposes a vehicle.

The rear floor assembly according to the present utility model comprises: the novel reinforced floor comprises a rear floor body, wherein a first reinforced part, a second reinforced part and a third reinforced part are arranged on the rear floor body, the first reinforced part and the second reinforced part are annular, the second reinforced part is arranged on the inner side of the first reinforced part, and the third reinforced part is arranged on the inner side of the second reinforced part.

According to the rear floor assembly, the first reinforcing part, the second reinforcing part and the third reinforcing part are arranged on the rear floor, so that the self structure of the rear floor can be optimized, the rigidity and the modal frequency of the rear floor assembly can be improved, the road surface excitation frequency is effectively avoided, the purpose of reducing the vibration of the rear floor is achieved, and the riding comfort of passengers in a vehicle is improved.

In some examples of the present utility model, the first reinforcing portion is a first groove, the second reinforcing portion is a second groove, the third reinforcing portion is a protrusion, the second groove is disposed to be recessed downward with respect to the first groove, and the protrusion is disposed to be protruded upward with respect to the second groove.

In some examples of the utility model, at least a portion of the outer edge line of the first groove, at least a portion of the outer edge line of the second groove, and at least a portion of the edge line of the protrusion are concentrically disposed.

In some examples of the present utility model, the partial outer edge line of the first groove is a first arc, the radius of the first arc is R1, the width of the first groove is w, the depth of the first groove is h, and R1, w and h satisfy the relationship: r1 is 320mm or less and 360mm or less, w is 150mm or less and 170mm or less and h is 50mm or less and 60mm or less; the outer edge line of the second groove includes: the two ends of the second arc line are connected with the two sides of the rear end of the second arc line, the corresponding circle centers are located outside the second arc line, the radius of the second arc line is R2, the arc length is L1, the radius of the third arc line is R3, the arc length is L2, and the R2, R3, L1 and L2 satisfy the relation: r2 is 170mm or less and 190mm or less, L1 is 620mm or less and 660mm or less, R3 is 200mm or less and 220mm or less, L2 is 140mm or less and 170mm or less; the protrusions are round protrusions, the radius of each protrusion is R4, and the R4 satisfies the relation: r4 is more than or equal to 90mm and less than or equal to 110mm.

In some examples of the utility model, a plurality of reinforcing ribs are provided on the rear floor, the plurality of reinforcing ribs being distributed in a plate body portion of the rear floor outside the first reinforcing portion and/or in the first reinforcing portion.

In some examples of the utility model, the rear floor assembly further comprises: the novel reinforced floor comprises a rear floor longitudinal beam, a rear floor middle cross beam, a rear floor rear cross beam and a first reinforced longitudinal beam, wherein the rear floor middle cross beam and the rear floor rear cross beam are arranged below the rear floor and are arranged at intervals in the front-rear direction, the rear floor middle cross beam and the rear floor rear cross beam are connected with the rear floor longitudinal beam, and the first reinforced longitudinal beam is connected between the rear floor middle cross beam and the rear floor rear cross beam.

In some examples of the utility model, the rear floor assembly further comprises: and the front end of the second reinforcing longitudinal beam is connected to the rear floor rear cross beam, and the rear end of the second reinforcing longitudinal beam is connected to the rear edge of the rear floor.

In some examples of the utility model, the rear floor center rail is located on a front side of the first reinforcement, the rear floor rear rail passes laterally through the first reinforcement, the second reinforcement, and the third reinforcement, and the first reinforcement stringer passes longitudinally through the first reinforcement and the second reinforcement.

In some examples of the present utility model, the first reinforcing longitudinal beam has an upwardly open groove formed therein and flanges provided on both lateral sides thereof, the flanges being fixedly connected to the rear floor; and the two ends of the first reinforcing longitudinal beam are respectively provided with a lap joint part, and the lap joint parts are respectively lapped on the rear floor middle cross beam and the rear floor rear cross beam.

The vehicle according to the present utility model includes: the rear floor assembly described above.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic structural view of a rear floor assembly from an underbody perspective in accordance with an embodiment of the present utility model;

FIG. 2 is a schematic view of the structure of the rear floor at a first angle;

fig. 3 is a schematic view of a second angle of the rear floor.

Reference numerals:

1. a rear floor assembly;

2. a rear floor; 21. a first reinforcing part; 22. a second reinforcing part; 23. a third reinforcing part; 24. a first arc; 25. a second arc; 26. a third arc; 27. reinforcing ribs; 3. a rear floor stringer; 4. a rear floor center cross member; 5. a rear floor rear cross member; 6. a first reinforcing stringer; 61. flanging; 62. a lap joint; 7. and a second reinforcing stringer.

Detailed Description

Embodiments of the present utility model will be described in detail below, with reference to the accompanying drawings, which are exemplary.

A rear floor assembly 1 according to an embodiment of the present utility model, which is applied to a vehicle, will be described with reference to fig. 1 to 3. Such as off-road vehicle models.

As shown in fig. 1 to 3, a rear floor assembly 1 according to an embodiment of the present utility model includes: the rear floor 2, the rear floor 2 is provided with a first reinforcing part 21, a second reinforcing part 22 and a third reinforcing part 23, the first reinforcing part 21 and the second reinforcing part 22 are annular, the second reinforcing part 22 is arranged on the inner side of the first reinforcing part 21, and the third reinforcing part 23 is arranged on the inner side of the second reinforcing part 22. It will be appreciated that the reinforcement on the rear floor 2 is a first reinforcement 21, a second reinforcement 22 and a third reinforcement 23 in that order from the outside to the inside, the third reinforcement 23 being located in the loop formed by the first reinforcement 21 and the second reinforcement 22. For example, the rear floor 2 has a height of about 747mm and a width of about 832mm.

Therefore, by arranging the first reinforcing part 21, the second reinforcing part 22 and the third reinforcing part 23 on the rear floor 2, the structure of the rear floor 2 can be optimized and reinforced, so that the rigidity and the modal frequency of the rear floor assembly 1 can be improved, the road surface excitation frequency can be effectively avoided, the vibration purpose of the rear floor 2 can be further achieved, and the riding comfort of passengers in a vehicle can be improved.

As shown in fig. 2 and 3, the first reinforcing portion 21 is a first groove, the second reinforcing portion 22 is a second groove, the third reinforcing portion 23 is a protrusion, the second groove is recessed downward relative to the first groove, and the protrusion is protruding upward relative to the second groove. That is, the reinforcing part on the rear floor 2 is designed into a groove, a groove and a protrusion structure from outside to inside, so that the rigidity of the rear floor 2 can be greatly improved, the modal frequency of the rear floor 2 can be sufficiently improved, the acoustic cavity mode can be avoided, and the booming can be prevented.

Further, as shown in fig. 2 and 3, at least part of the outer edge line of the first groove, at least part of the outer edge line of the second groove and at least part of the edge line of the protrusion are concentrically arranged, and the second groove structure is optimally designed based on the first groove structure, so that the design and manufacture of the first groove, the second groove and the protrusion are facilitated, that is, the formation of the first reinforcing part 21, the second reinforcing part 22 and the third reinforcing part 23 is facilitated, and thus the structural strength of the rear floor 2 can be effectively improved.

In addition, as shown in fig. 2 and 3, a part of the outer edge line of the first groove is a first arc line 24, the radius of the first arc line 24 is R1, the width of the first groove is w, the depth of the first groove is h, and R1, w and h satisfy the relation: r1 is 320mm or less and is 360mm or less, w is 150mm or less and is 170mm or less, h is 50mm or less and is 60mm or less, the first arc 24 is the largest inscribed circle on the rear floor 2, and the first arc 24 is approximately tangential to the front end and the rear end of the rear floor 2. The outer edge line of the second groove includes: the second arc line 25 and two third arc lines 26, the third arc lines 26 at two ends are connected to two sides of the rear end of the second arc line 25, the corresponding circle centers are located outside the second arc line 25, the radius of the second arc line 25 is R2, the arc length is L1, the radius of the third arc line 26 is R3, the arc length is L2, and the R2, R3, L1 and L2 satisfy the relation: 170mm is less than or equal to R2 is less than or equal to 190mm,620mm is less than or equal to L1 is less than or equal to 660mm,200mm is less than or equal to R3 is less than or equal to 220mm,140mm is less than or equal to L2 is less than or equal to 170mm. The bulge is a circular bulge and the radius is R4, and R4 satisfies the relation: r4 is more than or equal to 90mm and less than or equal to 110mm. For example, the first arc 24 encloses a first groove having a radius of about 338mm, a width of about 160mm, a depth of about 55mm, a radius of about 178mm, a length of 634mm, a radius of about 210mm, a length of about 156mm, and a radius of the protrusion of about 101mm. The first groove, the second groove and the bulge are arranged in the way, the design is reasonable, the area of the rear floor 2 can be utilized to the greatest extent, and the structural strength of the rear floor 2 can be better enhanced.

As shown in fig. 2 and 3, the rear floor 2 is provided with a plurality of reinforcing ribs 27, and the plurality of reinforcing ribs 27 are distributed in the plate body portion of the rear floor 2 located outside the first reinforcing portion 21 and/or the first reinforcing portion 21, so that a local area on the rear floor 2 can be reinforced and optimized, thereby improving the structural strength of the rear floor 2. A plurality of reinforcing ribs 27 may be laid out on the rear floor 2 as needed.

According to an alternative embodiment of the utility model, as shown in fig. 1, the rear floor assembly 1 further comprises: the rear floor longitudinal beam 3, the rear floor middle cross beam 4, the rear floor rear cross beam 5 and the first reinforcing longitudinal beam 6, the rear floor middle cross beam 4 and the rear floor rear cross beam 5 are arranged below the rear floor 2, the rear floor middle cross beam 4 and the rear floor rear cross beam 5 are arranged at intervals in the front-rear direction, the rear floor middle cross beam 4 and the rear floor rear cross beam 5 are connected with the rear floor longitudinal beam 3, the first reinforcing longitudinal beam 6 is connected between the rear floor middle cross beam 4 and the rear floor rear cross beam 5, so that a reinforcing frame structure of the rear floor 2 in the shape of a Chinese character 'ri' can be formed, and the rear floor longitudinal beam 3, the rear floor middle cross beam 4 and the rear floor rear cross beam 5 carry out peripheral gapless wrapping reinforcement on the whole rear floor 2, thereby improving the rigidity and the mode of the rear floor 2.

Further, as shown in fig. 1, the first reinforcing stringers 6 are connected to the middle portion of the rear floor center cross member 4 and the middle portion of the rear floor rear cross member 5, so that structural reinforcement can be effectively performed between the rear floor center cross member 4 and the rear floor rear cross member 5, and thus the structural strength of the rear floor assembly 1 can be improved.

Further, as shown in fig. 1, the rear floor assembly 1 further includes: and the second reinforcing longitudinal beam 7, the second reinforcing longitudinal beam 7 is connected with the back coaming, the front end of the second reinforcing longitudinal beam 7 is connected to the back floor back cross beam 5, and the back end of the second reinforcing longitudinal beam is connected to the back edge of the back floor 2. The rear edge of the rear floor 2 is connected with a rear coaming, so that the middle cross beam 4 of the rear floor, the rear cross beam 5 of the rear floor, the first reinforcing longitudinal beam 6 and the second reinforcing longitudinal beam 7 can form a 'field' -shaped reinforcing structure, the rear floor 2 is uniformly divided into four equal parts, and the rigidity and the mode of the rear floor 2 are improved. For example, the middle cross beam 4 of the rear floor is connected with the first reinforcing longitudinal beam 6, the rear cross beam 5 of the rear floor is connected with the second reinforcing longitudinal beam 7, and the back coaming is connected with the second reinforcing longitudinal beam 7, so that the rear floor assembly 1 in the shape of a Chinese character 'ri' can be formed, and the rigidity and the mode of the rear floor assembly 1 can be greatly improved.

Further, as shown in fig. 1, the rear floor center cross member 5 is located on the front side of the first reinforcement 21, the rear floor center cross member 5 passes through the first reinforcement 21, the second reinforcement 22, and the third reinforcement 23 in the lateral direction, and the first reinforcing side member 6 passes through the first reinforcement 21 and the second reinforcement 22 in the longitudinal direction. Therefore, the center of the reinforcing structure in the shape of the Chinese character 'tian' is overlapped with the center of the reinforcing part, so that the strength of the rear floor 2 can be improved, the rear floor 2 can be reinforced with an external structure to achieve a perfect fit state, the effect of 1+1 & gt2 is achieved, the rigidity and the mode of the rear floor 2 can be improved by more than 20% through the reinforcing of double functions, the excitation of a road surface, a power assembly and a transmission system can be avoided, the riding comfort of the rear part of a vehicle is improved, and the NVH performance of the rear part of the vehicle body is optimized.

In addition, as shown in fig. 1, an upwardly open groove is formed in the first reinforcing longitudinal beam 6, and flanges 61 are provided at both lateral sides, the flanges 61 are fixedly connected with the rear floor 2, the upwardly open groove facilitates the installation and disassembly of the first reinforcing longitudinal beam 6, and the flanges 61 are located at both left and right sides of the first reinforcing longitudinal beam 6, so that the structural strength of the first reinforcing longitudinal beam 6 can be improved.

Specifically, as shown in fig. 1, the two ends of the first reinforcing longitudinal beam 6 are respectively provided with a lap joint part 62, the lap joint parts 62 are respectively lapped on the rear floor middle cross beam 4 and the rear floor rear cross beam 5, the lap joint parts 62 are positioned at the front end and the rear end of the first reinforcing longitudinal beam 6, so that the first reinforcing longitudinal beam 6 can be conveniently and fixedly connected with the rear floor middle cross beam 4 and the rear floor rear cross beam 5, and the lap joint parts 62 can be in welded connection with the corresponding rear floor middle cross beam 4 and rear floor rear cross beam 5.

According to an embodiment of the present utility model, a vehicle includes: the rear floor assembly 1 described in the above embodiment.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the description of the utility model, a "first feature" or "second feature" may include one or more of such features. In the description of the present utility model, "plurality" means two or more. In the description of the utility model, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by another feature therebetween. In the description of the utility model, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A rear floor assembly, comprising: rear floor (2), be provided with first enhancement portion (21), second enhancement portion (22) and third enhancement portion (23) on rear floor (2), first enhancement portion (21) with second enhancement portion (22) all are annular, second enhancement portion (22) set up in the inboard of first enhancement portion (21), third enhancement portion (23) set up in the inboard of second enhancement portion (22).

2. The rear floor assembly according to claim 1, wherein the first reinforcement portion (21) is a first groove, the second reinforcement portion (22) is a second groove, the third reinforcement portion (23) is a protrusion, the second groove is recessed downward relative to the first groove, and the protrusion is protruding upward relative to the second groove.

3. The rear floor assembly of claim 2, wherein at least a portion of the outer edge line of the first groove, at least a portion of the outer edge line of the second groove, and at least a portion of the edge line of the protrusion are concentrically disposed.

4. The rear floor assembly of claim 2, wherein a portion of the outer edge line of the first groove is a first arc (24), the radius of the first arc (24) is R1, the width of the first groove is w, the depth of the first groove is h, and R1, w and h satisfy the relationship: r1 is 320mm or less and 360mm or less, w is 150mm or less and 170mm or less and h is 50mm or less and 60mm or less; and/or

The outer edge line of the second groove includes: the two ends of the third arc line (26) are connected to two sides of the rear end of the second arc line (25), the corresponding circle centers are located outside the second arc line (25), the radius of the second arc line (25) is R2, the arc length is L1, the radius of the third arc line (26) is R3, the arc length is L2, and the R2, R3, L1 and L2 satisfy the relation: r2 is 170mm or less and 190mm or less, L1 is 620mm or less and 660mm or less, R3 is 200mm or less and 220mm or less, L2 is 140mm or less and 170mm or less; and/or

The protrusions are round protrusions, the radius of each protrusion is R4, and the R4 satisfies the relation: r4 is more than or equal to 90mm and less than or equal to 110mm.

5. Rear floor assembly according to claim 1, characterized in that the rear floor (2) is provided with a plurality of reinforcing ribs (27), a plurality of said reinforcing ribs (27) being distributed over the plate body portion of the rear floor (2) outside the first reinforcement (21) and/or within the first reinforcement (21).

6. The rear floor assembly of claim 1, further comprising: rear floor longeron (3), rear floor middle cross beam (4), rear floor rear cross beam (5) and first reinforcing longeron (6), rear floor middle cross beam (4) with rear floor rear cross beam (5) set up in rear floor (2)'s below and in the interval setting in fore-and-aft direction, rear floor middle cross beam (4) with rear floor rear cross beam (5) all with rear floor longeron (3) are connected, first reinforcing longeron (6) connect in between rear floor middle cross beam (4) with rear floor rear cross beam (5).

7. The rear floor assembly of claim 6, further comprising: -a second reinforcing stringer (7), the front end of the second reinforcing stringer (7) being connected to the rear floor rear cross member (5) and the rear end being connected to the rear edge of the rear floor (2).

8. Rear floor assembly according to claim 6, wherein the rear floor center cross member (4) is located at the front side of the first reinforcement (21), the rear floor rear cross member (5) passing transversely through the first reinforcement (21), the second reinforcement (22) and the third reinforcement (23), the first reinforcement stringer (6) passing longitudinally through the first reinforcement (21) and the second reinforcement (22).

9. Rear floor assembly according to claim 6, characterized in that the first reinforcing stringers (6) are formed with upwardly open grooves and provided with flanges (61) on both lateral sides, the flanges (61) being fixedly connected to the rear floor (2); and/or

And the two ends of the first reinforcing longitudinal beam (6) are respectively provided with a lap joint part (62), and the lap joint parts (62) are respectively overlapped on the rear floor middle cross beam (4) and the rear floor rear cross beam (5).

10. A vehicle, characterized by comprising: the rear floor assembly (1) of any one of claims 1-9.

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