CN223237754U - Rear floor longitudinal member and vehicle - Google Patents

Abstract

The utility model provides a rear floor longitudinal beam and a vehicle, and relates to the technical field of vehicle parts, which comprises a rear floor longitudinal beam body and a reinforcing structure arranged in the rear floor longitudinal beam body, the rear floor longitudinal beam body is internally provided with a rear floor longitudinal beam cavity extending along the front-rear direction of the vehicle, and the reinforcing structure is positioned in the rear floor longitudinal beam cavity and comprises a plurality of transverse reinforcing pieces and a plurality of longitudinal reinforcing pieces, wherein the transverse reinforcing pieces and the longitudinal reinforcing pieces are sequentially staggered along the front-rear direction of the vehicle. The rear floor longitudinal beam can strengthen the left-right direction and the front-back direction of the rear floor longitudinal beam, is beneficial to improving the longitudinal bearing capacity of the rear floor longitudinal beam, is applied to a rear floor assembly, can improve the integral installation strength of the rear floor assembly, is beneficial to improving the dynamic stiffness and the driving comfort of a vehicle, and is beneficial to improving the impact resistance.

Description

Rear floor longitudinal beam and vehicle

Technical Field

The utility model relates to the technical field of vehicle parts, in particular to a rear floor longitudinal beam. Meanwhile, the utility model also relates to a vehicle using the rear floor longitudinal beam.

Background

Rear floor stringers are an important component of the body structure of a motor vehicle, which are located in the rear of the vehicle and generally form the rear structure of the vehicle together with the rear floor body. The main function of the rear floor longitudinal beam is to bear seats and passengers and play a key role in sealing and vibrating noise of the passenger cabin. The device can influence the rigidity and the operation stability of the whole vehicle, is one of key force transmission paths of the rear collision, and is important for protecting the passenger cabin.

In the existing rear floor longitudinal beam structure, a longitudinal beam reinforcing plate is generally arranged in a rear floor longitudinal beam cavity, and the longitudinal beam reinforcing plate adopts a transverse integral reinforcing plate as reinforcement, so that the longitudinal bearing is insufficient, the installation strength of the whole rear floor longitudinal beam is low, the dynamic stiffness of a vehicle is poor, and the driving comfort of the vehicle is influenced.

Disclosure of utility model

In view of the above, the present utility model aims to provide a rear floor stringer, which can improve the performance of the rear floor stringer.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

a rear floor stringer comprising a rear floor stringer body and a reinforcing structure disposed within the rear floor stringer body;

A rear floor rail cavity extending in the front-rear direction of the vehicle is formed in the rear floor rail body;

The reinforcing structure is located in the rear floor longitudinal beam cavity and comprises a plurality of transverse reinforcing pieces and a plurality of longitudinal reinforcing pieces, wherein the transverse reinforcing pieces and the longitudinal reinforcing pieces are sequentially staggered in the front-rear direction of the vehicle, the transverse reinforcing pieces extend in the left-right direction of the vehicle, and the longitudinal reinforcing pieces extend in the front-rear direction of the vehicle.

Further, the transverse reinforcement comprises a rear damper inner support plate which is arranged corresponding to the shock absorption spring mounting point in the front-rear direction of the vehicle;

The upper portion of back bumper shock absorber inner support plate with the roof of back floor longeron cavity is connected, the lower part of back bumper shock absorber inner support plate with the diapire of back floor longeron cavity is connected.

Further, the inner supporting plate of the rear shock absorber comprises a supporting plate main body with a cross section of 匚, wherein the supporting plate main body comprises two first transverse plates arranged at intervals and a first longitudinal plate connected between the two first transverse plates;

A rear floor longitudinal beam middle section reinforcing plate is arranged in the rear floor longitudinal beam cavity, and is correspondingly arranged with the damping spring mounting point in the front-rear direction of the vehicle and connected to the bottom wall of the rear floor longitudinal beam cavity;

The middle section reinforcing plate of the rear floor longitudinal beam is provided with two first transverse flanges and a first longitudinal flange which are bent upwards, the two first transverse flanges are respectively connected with the two first transverse plates in a lap joint mode, and the first longitudinal flanges are connected with the first longitudinal plates in a lap joint mode.

Further, each first transverse plate is provided with a first flanging and a second flanging, each first transverse plate is connected with the top wall of the rear floor longitudinal beam cavity through the first flanging, and each first transverse plate is connected with the inner side wall of the rear floor longitudinal beam cavity through the second flanging.

Further, the transverse reinforcement further comprises a rear auxiliary frame front mounting reinforcing plate, and the rear auxiliary frame front mounting reinforcing plate is correspondingly arranged with the rear floor middle cross beam in the front-rear direction of the vehicle;

The front mounting reinforcing plate flange is arranged on the periphery of the front mounting reinforcing plate of the rear auxiliary frame, and the front mounting reinforcing plate of the rear auxiliary frame is connected with the top wall, the bottom wall, the inner side wall and the outer side wall of the rear floor longitudinal beam cavity respectively through the front mounting reinforcing plate flange on the periphery.

Further, a rear auxiliary frame front mounting nut is arranged in the rear floor longitudinal beam cavity, and one side of the rear auxiliary frame front mounting reinforcing plate is connected with the rear auxiliary frame front mounting nut;

The rear floor longitudinal beam cavity is internally provided with a rear auxiliary frame front nut supporting plate for supporting the rear auxiliary frame front mounting nut, the rear auxiliary frame front nut supporting plate is connected to the bottom wall of the rear floor longitudinal beam cavity, and part of the rear auxiliary frame front nut supporting plate is connected with the front mounting reinforcing plate flange connected with the bottom wall in a lap joint mode.

Further, the longitudinal reinforcement comprises a rear auxiliary frame rear installation reinforcing plate, the rear auxiliary frame rear installation reinforcing plate is correspondingly arranged with the rear floor rear cross beam in the front-rear direction of the vehicle, and the rear auxiliary frame rear installation reinforcing plate is positioned in the middle of the rear floor longitudinal beam cavity in the left-right direction of the vehicle;

the rear auxiliary frame rear mounting reinforcing plate is provided with a plurality of first reinforcing ribs, the first reinforcing ribs are arranged at intervals along the front-rear direction of the vehicle, and each first reinforcing rib extends along the up-down direction of the vehicle.

Further, the upper side and the lower side of the rear auxiliary frame rear mounting reinforcing plate are respectively provided with a first upper side flanging and a first lower side flanging, the rear auxiliary frame rear mounting reinforcing plate is connected with the top wall of the rear floor longitudinal beam cavity through the first upper side flanging, and the rear auxiliary frame rear mounting reinforcing plate is connected with the bottom wall of the rear floor longitudinal beam cavity through the first lower side flanging.

Further, the longitudinal reinforcement further comprises a rear floor longitudinal beam front reinforcement plate positioned between the rear subframe front mounting reinforcement plate and the rear shock absorber inner support plate, and the rear floor longitudinal beam front reinforcement plate is positioned in the middle of the rear floor longitudinal beam cavity in the left-right direction of the vehicle;

The back floor longeron front reinforcement board is followed the crooked direction of back floor longeron body is buckled, just the upper and lower both sides of back floor longeron front reinforcement board are equipped with second upside turn-ups and second downside turn-ups respectively, back floor longeron front reinforcement board passes through the second upside turn-ups with the roof of back floor longeron cavity is connected, back floor longeron front reinforcement board passes through the second downside turn-ups with the diapire of back floor longeron cavity is connected.

Compared with the prior art, the utility model has the following advantages:

According to the rear floor longitudinal beam, the transverse reinforcing pieces and the longitudinal reinforcing pieces are arranged in a staggered manner along the front-rear direction of the vehicle, and respectively reinforce the left-right direction and the front-rear direction of the rear floor longitudinal beam, so that the longitudinal bearing capacity of the rear floor longitudinal beam is improved, the overall installation strength of the rear floor assembly can be improved, the dynamic stiffness and the driving comfort of the vehicle are improved, and the impact resistance performance is also improved.

In addition, the back bumper shock absorber inner support board that sets up supports between the roof and the diapire of back floor longeron cavity when extending along the left and right directions of vehicle, can strengthen back floor longeron in the upper and lower direction of vehicle to can be better strengthen damping spring mounting point position, do benefit to the dynamic stiffness who improves back floor assembly. And a rear floor longitudinal beam middle section reinforcing plate is arranged in the rear floor longitudinal beam cavity and is used for limiting the connection mode of the support plate main body and the rear floor longitudinal beam body, so that the reinforcing effect of the rear damper inner support plate on the rear floor longitudinal beam body can be further improved.

In addition, the reinforcing plate is installed before the back sub vehicle frame that sets up, and its week sets up preceding installation reinforcing plate turn-ups, and roof, diapire, inside wall and the lateral wall of back floor longeron cavity are connected respectively, can carry out better enhancement to the junction of back floor longeron body and back floor middle cross beam, be applied to in the back floor assembly, can further improve the dynamic stiffness of back floor assembly. One side of the front mounting reinforcing plate of the rear auxiliary frame is connected with the front mounting nut of the rear auxiliary frame, so that the front mounting reinforcing plate of the rear auxiliary frame can reinforce the mounting structure at the front part of the rear auxiliary frame at the same time, and the dynamic stiffness of the whole vehicle can be improved.

Furthermore, the reinforcing plate is arranged behind the rear auxiliary frame, a plurality of first reinforcing ribs are arranged on the reinforcing plate, and the rear floor longitudinal beam body can be better reinforced in the up-down direction of the vehicle while the longitudinal structure of the rear floor longitudinal beam is reinforced. Make the back sub vehicle frame install the reinforcing plate behind through first upside turn-ups and first downside turn-ups with back floor longeron body coupling, both connect reliability and steadiness higher, can improve the reinforcing effect of back sub vehicle frame back installation reinforcing plate to back floor longeron body.

The front reinforcing plate of the rear floor longitudinal beam is bent in the bending direction of the rear floor longitudinal beam body, the bending part of the rear floor longitudinal beam body can be better reinforced, the front reinforcing plate of the rear floor longitudinal beam is limited to be connected with the rear floor longitudinal beam body through the second upper side flanging and the second lower side flanging, the connection reliability and the stability of the front reinforcing plate of the rear floor longitudinal beam are higher, and the reinforcing effect of the rear installation reinforcing plate of the rear auxiliary frame on the rear floor longitudinal beam body can be further improved.

Another object of the utility model is to propose a vehicle whose rear floor assembly comprises a rear floor rail as described above.

The vehicle can improve the longitudinal bearing capacity of the rear floor assembly and the integral mounting strength of the rear floor assembly by using the rear floor longitudinal beam in the rear floor assembly, thereby being beneficial to improving the dynamic stiffness and the driving comfort of the vehicle and improving the impact resistance of the vehicle.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 is a schematic view of a rear floor stringer according to an embodiment of the present utility model;

fig. 2 is a schematic structural view of a front mounting reinforcing plate of a rear subframe assembled on a longitudinal beam body according to an embodiment of the present utility model;

FIG. 3 is a schematic view illustrating another structure in which a front mounting reinforcement plate of a rear subframe is mounted on a rail body according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a front mounting reinforcement plate of a rear subframe according to an embodiment of the present utility model;

FIG. 5 is a schematic view of the structure of FIG. 4 at another view angle;

FIG. 6 is a schematic view of a rear floor stringer front stiffener according to an embodiment of the present disclosure;

FIG. 7 is a schematic view illustrating a structure in which an inner support plate of a rear shock absorber is assembled to a girder body according to an embodiment of the present utility model;

FIG. 8 is a schematic view illustrating another structure in which the back shock absorber inner support plate is assembled to the side member body according to the first embodiment of the present utility model;

FIG. 9 is an assembly view of a rear shock absorber inner support plate and a rear floor stringer mid-section stiffener according to an embodiment of the present utility model;

FIG. 10 is a schematic view of a middle reinforcement plate of a rear floor stringer according to an embodiment of the present utility model;

fig. 11 is a schematic structural view of a rear mounting reinforcement plate of a rear subframe according to an embodiment of the present utility model.

Reference numerals illustrate:

1. A rear floor rail body; 2, a transverse reinforcement; the rear floor longitudinal beam comprises a rear floor longitudinal beam middle section reinforcing plate, a damping spring mounting point, a rear auxiliary frame front mounting nut, a rear auxiliary frame front nut supporting plate and a rear auxiliary frame front nut supporting plate, wherein the rear floor longitudinal beam middle section reinforcing plate is fixedly connected with the rear floor longitudinal beam middle section reinforcing plate;

101. a rear floor rail body; 102, a rear floor stringer cover plate 103, a rear floor stringer cavity;

1031. bottom wall 1032, top wall 1033, inner side wall;

201. 202, a reinforcing plate is arranged in front of a rear auxiliary frame;

2011. 2012, a first flange, 2013, a second flange;

20111. 20112, the first longitudinal plate;

2021. The front mounting reinforcing plate is turned;

20211. The first reinforcing plate is turned over; 20212, second reinforcing plate flanging, 20213, third reinforcing plate flanging, 20214, fourth reinforcing plate flanging;

301. 302, a rear floor longitudinal beam front reinforcing plate;

3011. 3012, a first upper side flanging, 3013, a first lower side flanging;

3021. 3022, a second lower flange;

401. 402, a first longitudinal flange;

701. An extension.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be noted that, based on the orientation or positional relationship shown in the drawings, it is merely for convenience of describing the present utility model and simplifying the description, and it is not indicated or implied that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, in the description of the present utility model, the terms "mounted," "connected," and "connecting" are to be construed broadly, unless otherwise specifically defined. For example, the components may be fixedly connected, detachably connected or integrally connected, mechanically connected or electrically connected, directly connected or indirectly connected through an intermediate medium, or communicated with each other. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in combination with specific cases.

For convenience of description and introduction of related matters, the present embodiment shows, by arrows, azimuth words such as "front, rear, left, right, up, down" used in the embodiment in fig. 1. Specifically, "left and right" indicated by arrows in fig. 1 are the "width direction, the lateral direction" in this embodiment, "front and rear" are the "length direction, the longitudinal direction" in this embodiment, and "up and down" are the "height direction" in this embodiment.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

Example 1

The embodiment relates to a rear floor longitudinal beam, which can improve the longitudinal bearing capacity of the rear floor longitudinal beam by improving the structure of the rear floor longitudinal beam, improve the integral installation strength of a rear floor assembly, be beneficial to improving the dynamic stiffness and driving comfort of a vehicle and be beneficial to improving the impact resistance of the vehicle.

Based on the above design concept, an exemplary structure of the rear floor rail of the present embodiment is shown in fig. 1, and in the overall structure, the rear floor rail of the present embodiment mainly includes a rear floor rail body 1, and a reinforcing structure provided in the rear floor rail body 1, in which a rear floor rail cavity 103 extending in the front-rear direction of the vehicle is formed in the rear floor rail body 1, the reinforcing structure being located in the rear floor rail cavity 103.

The rear floor stringer body 1 may refer to an existing structure, and mainly includes a rear floor stringer main body 101 and a rear floor stringer cover 102, where the rear floor stringer main body 101 and the rear floor stringer cover 102 enclose a rear floor stringer cavity 103 according to this embodiment, and a cross section of the rear floor stringer cavity 103 is approximately "匚".

For convenience of description, an upper wall portion in the rear floor side member cavity 103 will be referred to as a top wall 1032, a lower wall portion will be referred to as a bottom wall 1031, an inner wall portion will be referred to as an inner wall 1033, and an outer wall portion will be referred to as an outer wall. The structure of the outer side wall, which is formed specifically on the existing structure of the vehicle, is not shown in the drawings, and is not described specifically in the present embodiment.

In addition, on the vehicle, there are two rear floor stringers, and the two rear floor stringers are symmetrically arranged about the center line of the vehicle in the left-right direction, so the following description will be given by taking the rear floor stringer on the right side as an example.

In the prior art, the rear floor longitudinal beam main body 101 and the rear floor longitudinal beam cover plate 102 are not connected with each other, but the reinforcing structure arranged in the embodiment can better reinforce the rear floor longitudinal beam in the up-down direction of the vehicle, the left-right direction of the vehicle and the front-back direction of the vehicle, so that the rear floor longitudinal beam has better structural strength, is applied to a rear floor assembly of the vehicle, can improve the dynamic stiffness of the rear floor assembly, and improves the driving comfort and the impact resistance of the vehicle.

Still referring to fig. 1, the reinforcing structure of the present embodiment includes a plurality of transverse reinforcing members 2 and a plurality of longitudinal reinforcing members 3, the transverse reinforcing members 2 and the longitudinal reinforcing members 3 are sequentially staggered in the front-rear direction of the vehicle, the transverse reinforcing members 2 extend in the left-right direction of the vehicle, so that the rear floor longitudinal beam can be better reinforced in the left-right direction of the vehicle, the longitudinal reinforcing members 3 extend in the front-rear direction of the vehicle, so that the rear floor longitudinal beam can be better reinforced in the front-rear direction of the vehicle, and the transverse reinforcing members 2 and the longitudinal reinforcing members 3 are sequentially staggered in the front-rear direction of the vehicle, so that the rear floor longitudinal beam has better bearing capacity in the left-right direction of the vehicle and the front-rear direction of the vehicle as a whole.

In the preferred embodiment, there are two transverse stiffeners 2 and two longitudinal stiffeners 3, and the mounting manner and specific arrangement position of the transverse stiffeners in the cavity of the rear floor stringer will be described in detail below. It should be understood that the number of transverse stiffeners 2 and the number of longitudinal stiffeners 3 may be adjusted according to the actual needs, e.g. one, three, four etc. respectively, and that the number of transverse stiffeners 2 and the number of longitudinal stiffeners 3 may also be set to different values.

As shown in fig. 7 and 8, as a preferred embodiment, the lateral reinforcement 2 includes a rear-bumper inner support plate 201, the rear-bumper inner support plate 201 being disposed in correspondence with the damper spring mounting points 5 in the front-rear direction of the vehicle, an upper portion of the rear-bumper inner support plate 201 being connected to a top wall 1032 of the rear floor rail cavity 103, and a lower portion of the rear-bumper inner support plate 201 being connected to a bottom wall 1031 of the rear floor rail cavity 103.

The rear shock absorber inner support plate 201 that so set up supports between roof 1032 and diapire 1031 of rear floor longeron cavity when extending along the left and right directions of vehicle, can strengthen rear floor longeron in the upper and lower direction of vehicle to can be better strengthen damping spring mounting point 5 position, be applied to in the rear floor assembly, do benefit to the dynamic stiffness who improves the rear floor assembly.

In order to achieve a better reinforcing effect, as a preferred embodiment, as shown in fig. 9, the rear shock absorber inner support plate 201 includes a support plate body 2011 having a cross section of "匚", and the support plate body 2011 includes two first transverse plates 20111 disposed at a distance from each other, and a first longitudinal plate 20112 connected between the two first transverse plates 20111.

Wherein, two first transverse plates 20111 all extend along the left and right directions of vehicle, and first vertical plate 20112 extends along the fore-and-aft direction of vehicle, when installing in rear floor longeron cavity 103, is formed with the cavity between backup pad main part 2011 and the inside wall 1033, and this cavity extends along the upper and lower direction of vehicle, can be better strengthen rear floor longeron's damping spring mounting point 5 department.

Specifically, the dimensions of each first transverse plate 20111 in the left-right direction of the vehicle are between 80mm and 90mm, for example, 80mm, 85mm, 90mm, etc., the dimensions of each first longitudinal plate 20112 in the front-rear direction of the vehicle are between 62mm and 65mm, for example, 62mm, 63mm, 65mm, etc., and the dimensions of each of the first transverse plate 20111 and each of the first longitudinal plates 20112 in the up-down direction of the vehicle are between 100mm and 110mm, for example, 100mm, 105mm, 110mm, etc.

As shown in fig. 8 and 10, a rear floor stringer middle reinforcing plate 4 is disposed in the rear floor stringer cavity 103, the rear floor stringer middle reinforcing plate 4 is disposed in the front-rear direction of the vehicle corresponding to the damper spring mounting point 5, and the rear floor stringer middle reinforcing plate 4 is connected to the bottom wall 1031 of the rear floor stringer cavity 103, so that the damper spring mounting point 5 of the rear floor stringer can be better reinforced.

In a specific structure, as shown in fig. 10 in combination with fig. 9, the size of the rear floor side member middle reinforcement plate 4 is larger than that of the support plate main body 2011 in the left-right direction of the vehicle, and the size of the rear floor side member middle reinforcement plate 4 is also larger than that of the support plate main body 2011 in the front-rear direction of the vehicle. The middle section reinforcing plate 4 of the rear floor longitudinal beam is provided with two first transverse flanges 401 and a first longitudinal flange 402 which are bent upwards, the two first transverse flanges 401 are respectively connected with the two first transverse plates 20111 in a lap joint mode, and the first longitudinal flange 402 is connected with the first longitudinal plate 20112 in a lap joint mode.

More specifically, the dimension of the first transverse flange 401 in the left-right direction of the vehicle and the dimension of the first longitudinal flange 402 in the front-rear direction of the vehicle are both between 38mm and 40mm, for example, 38mm, 39mm, 40mm, etc., which are beneficial to improving the connection reliability of the rear floor rail middle section reinforcing plate 4 and the support plate main body 2011.

Like in this embodiment, be equipped with the opening on the back floor longeron middle section reinforcing plate 4, two first horizontal turn-ups 401 and first vertical turn-ups 402 are located open-ended edge for back floor longeron middle section reinforcing plate 4 weight is lighter, and the convenience is connected with backup pad main part 2011, thereby can carry out better enhancement to back floor longeron's damping spring mounting point 5 department.

As shown in fig. 7 to 9, as a preferred embodiment, each first transverse plate 20111 is provided with a first flange 2012 and a second flange 2013, each first transverse plate 20111 is connected to the top wall 1032 of the rear floor stringer cavity 103 through the first flange 2012, and each first transverse plate 20111 is connected to the inner side wall 1033 of the rear floor stringer cavity 103 through the second flange 2013, which can improve the structural strength of the rear damper inner support plate 201 itself, facilitate the improvement of the reliability of the fixing of the support plate main body 2011 in the rear floor stringer, and improve the structural reinforcement effect of the rear damper inner support plate 201 on the rear floor stringer.

Still referring to fig. 9 and in combination with fig. 8, a flange is further provided on the outer side of the middle reinforcing plate 4 of the rear floor longitudinal beam, and the flange is lapped on the edge of the rear floor longitudinal beam main body 101, so as to improve the stability and reliability of the connection between the middle reinforcing plate 4 of the rear floor longitudinal beam and the rear floor longitudinal beam main body 101.

In the above structure, the rear floor stringer middle reinforcing plate 4 is disposed in the rear floor stringer cavity 103, and the connection mode of the support plate main body 2011 and the rear floor stringer body 1 is limited, so that the reinforcing effect of the rear damper inner support plate 201 on the rear floor stringer body 1 can be further improved.

It should be noted that, in order to further improve the structural strength of the rear shock absorber inner support plate 201, the first transverse plates 20111 are each provided with a plurality of reinforcing ribs, preferably, the plurality of reinforcing ribs are arranged at intervals in the vertical direction of the vehicle, and each reinforcing rib extends along the left-right direction of the vehicle, so that the structural strength of the rear shock absorber inner support plate 201 can be better improved.

It should be understood that the first vertical plate 20112 may also be added with reinforcing ribs as needed. In this embodiment, the first vertical plate 20112 is further provided with a process hole, and the process hole may be provided on the first vertical plate 20112 or the first horizontal plate 20111, which is set according to actual needs, and is not specifically limited in this embodiment.

As shown in fig. 2 to 5, as a preferred embodiment, the transverse reinforcement 2 further includes a rear subframe front mounting reinforcement plate 202, and the rear subframe front mounting reinforcement plate 202 is disposed in correspondence with the rear floor center cross member in the front-rear direction of the vehicle, so as to better reinforce the connection portion of the rear floor side member and the rear floor center cross member.

Preferably, the front mounting reinforcing plate 2021 is respectively arranged around the front mounting reinforcing plate 202 of the rear subframe, and the front mounting reinforcing plate 202 of the rear subframe is respectively connected with the top wall 1032, the bottom wall 1031, the inner side wall 1033 and the outer side wall of the rear floor longitudinal beam cavity 103 through the front mounting reinforcing plate 2021 around, so that the structural strength of the front mounting reinforcing plate 202 of the rear subframe is higher, and the structural reinforcing effect of the front mounting reinforcing plate 202 of the rear subframe on the rear floor longitudinal beam is improved.

For convenience of description, as shown in fig. 4 and 5, in the present embodiment, the front-mounting reinforcement panel flanges 2021 around are referred to as a first reinforcement panel flange 20211, a second reinforcement panel flange 20212, a third reinforcement panel flange 20213, and a fourth reinforcement panel flange 20214, respectively.

Referring to fig. 3, the front rear sub-frame mounting reinforcement plate 202 extends in the left-right direction of the vehicle, the front rear sub-frame mounting reinforcement plate 202 is welded to the top wall 1032 by a first reinforcement plate flange 20211, in this embodiment, the front rear sub-frame mounting reinforcement plate 202 is welded to the bottom wall 1031 by a second reinforcement plate flange 20212, the front rear sub-frame mounting reinforcement plate 202 is welded to the rear floor rail main body 101, the front rear sub-frame mounting reinforcement plate 202 is welded to the inner wall 1033 by a third reinforcement plate flange 20213, the front rear sub-frame mounting reinforcement plate 202 is welded to the inner wall of the rear floor rail main body 101 by a fourth reinforcement plate flange 20214, and the front sub-frame mounting reinforcement plate 202 is welded to the outer wall not shown.

In the structure, the front mounting reinforcing plate flanges 2021 are respectively arranged on the periphery of the front mounting reinforcing plate 202 of the rear subframe, the top wall 1032, the bottom wall 1031, the inner side wall 1033 and the outer side wall of the rear floor longitudinal beam cavity 103 are respectively connected, the connection part of the rear floor longitudinal beam body 1 and the rear floor middle cross beam can be better reinforced, and the dynamic stiffness of the rear floor assembly can be further improved when the rear floor longitudinal beam is applied to the rear floor assembly.

Still referring to fig. 2 and 4, as a preferred embodiment, a rear subframe front mounting nut 6 is provided in the rear floor rail cavity 103, the rear subframe front mounting nut 6 being mounted to the bottom wall 1031 and extending in the up-down direction of the vehicle, which constitutes the front mounting point of the rear subframe.

In a preferred embodiment, one side of the front mounting reinforcing plate 202 of the rear subframe is connected with the front mounting nut 6 of the rear subframe, specifically, the rear side of the front mounting reinforcing plate 202 of the rear subframe is connected with the front mounting nut 6 of the rear subframe, so that the front mounting reinforcing plate 202 of the rear subframe can reinforce the mounting structure of the front part of the rear subframe at the same time, which is beneficial to improving the dynamic stiffness of the whole vehicle.

The rear floor longitudinal beam cavity 103 is internally provided with a rear auxiliary frame front nut supporting plate 7 for supporting a rear auxiliary frame front mounting nut 6, the rear auxiliary frame front nut supporting plate 7 is connected to the bottom wall 1031 of the rear floor longitudinal beam cavity 103, and part of the rear auxiliary frame front nut supporting plate 7 is connected with a front mounting reinforcing plate flanging 2021 connected with the bottom wall 1031 in a lap joint manner.

With continued reference to fig. 4, as in the present embodiment, the rear subframe front nut support plate 7 has an extension portion 701 extending between the second reinforcement plate flange 20212 and the bottom wall 1031, and preferably, the extension portion 701 is two, the two extension portions 701 are arranged at intervals along the left-right direction of the vehicle, and the portion of the second reinforcement plate flange 20212 corresponding to the extension portion 701 is locally protruded upwards, so that the second reinforcement plate flange 20212, the extension portion 701 and the bottom wall 1031 can be welded together, which can better improve the structural strength of the connection portion between the rear floor rail and the rear floor middle cross member.

In the above configuration, the rear side of the rear sub-frame front mounting reinforcement plate 202 is connected to the rear sub-frame front mounting nut 6, and it should be understood that the front side of the rear sub-frame front mounting reinforcement plate 202 may be connected to the rear sub-frame front mounting nut 6.

As shown in fig. 1 and 11, as a preferred embodiment, the longitudinal reinforcement 3 includes a rear sub-frame rear mounting reinforcement plate 301, and the rear sub-frame rear mounting reinforcement plate 301 extends entirely in the front-rear direction of the vehicle, so that the longitudinal load-carrying capacity of the rear floor side member can be improved. The rear sub-frame is provided with the reinforcing plate 301 at the back and forth direction of the vehicle and the rear floor rear cross beam, so that the structural strength of the connection part of the rear floor longitudinal beam and the rear floor rear cross beam can be better improved.

The rear mounting reinforcing plate 301 of the rear subframe is located in the middle of the rear floor longitudinal beam cavity 103 in the left-right direction of the vehicle, and in this embodiment, the distance between the rear mounting reinforcing plate 301 of the rear subframe and the inner side wall 1033 and the distance between the rear mounting reinforcing plate 301 of the rear subframe and the outer side wall are all 65mm-70mm, for example, 65mm, 68mm, 70mm and the like, so that the rear floor longitudinal beam can be better reinforced.

As shown in fig. 11, the rear sub-frame rear mounting stiffener 301 is provided with a plurality of first stiffeners 3011, the plurality of first stiffeners 3011 are arranged at intervals along the front-rear direction of the vehicle, each first stiffener 3011 extends along the up-down direction of the vehicle, and each first stiffener 3011 is formed by protruding a part of the rear sub-frame rear mounting stiffener 301 to one side, so that the processing is convenient.

As in the present embodiment, the first reinforcing ribs 3011 are provided in five, and it should be understood that the number of the first reinforcing ribs 3011 may be provided in other numbers than five, such as three, four, six, etc. The height of each first reinforcing rib 3011 in the up-down direction of the vehicle is 68mm-140mm, for example, 68mm, 80mm, 90mm, 110mm, 140mm and the like can be set according to actual needs.

In this embodiment, the rear mounting reinforcement plate 301 of the rear subframe is provided with a plurality of first reinforcement ribs 3011, which can reinforce the longitudinal structure of the rear floor rail and simultaneously reinforce the rear floor rail body 1 in the vertical direction of the vehicle.

With continued reference to fig. 11, as a preferred embodiment, the upper and lower sides of the rear sub-frame rear mounting reinforcing plate 301 are respectively provided with a first upper side edge 3012 and a first lower side edge 3013, the rear sub-frame rear mounting reinforcing plate 301 is connected with the top wall 1032 of the rear floor longitudinal beam cavity 103 through the first upper side edge 3012, and the rear sub-frame rear mounting reinforcing plate 301 is connected with the bottom wall 1031 of the rear floor longitudinal beam cavity 103 through the first lower side edge 3013, so that the reliability and stability of connection between the rear sub-frame rear mounting reinforcing plate 301 and the rear floor longitudinal beam body 1 are high, and the reinforcing effect of the rear sub-frame rear mounting reinforcing plate 301 on the rear floor longitudinal beam body 1 can be improved.

As shown in fig. 1 and 6, as a preferred embodiment, the longitudinal reinforcement 3 further includes a rear floor rail front reinforcement plate 302 located between the rear sub-frame front mounting reinforcement plate 202 and the rear shock absorber inner support plate 201, the rear floor rail front reinforcement plate 302 extending in the front-rear direction of the vehicle, and the rear sub-frame front mounting reinforcement plate 202 being located in the middle of the rear floor rail cavity 103 in the vehicle left-right direction, which can better improve the longitudinal load-carrying capacity of the rear floor rail.

With continued reference to fig. 6, the rear floor rail front reinforcement panel 302 is then bent in the bending direction of the floor rail body 1, as in the present embodiment, the angle α between the front and rear of the rear floor rail front reinforcement panel 302 is between 150 ° -175 °. Here, the rear floor rail front reinforcement plate 302 is supported between the top wall 1032 and the bottom wall 1031, and can preferably reinforce the rear floor rail body 1 in the vehicle up-down direction. The rear floor stringer front reinforcing plate 302 is then bent in the bending direction of the floor stringer body 1, so that the bending portion of the rear floor stringer body 1 can be better reinforced.

The upper and lower both sides of back floor longeron front reinforcement plate 302 are equipped with second upper side edge 3021 and second lower side edge 3022 respectively, and back floor longeron front reinforcement plate 302 is connected with the roof 1032 of back floor longeron cavity 103 through second upper side edge 3021, and back floor longeron front reinforcement plate 302 is connected with the diapire 1031 of back floor longeron cavity 103 through second lower side edge 3022 for make the reliability and the steadiness that both are connected of back sub-frame front mounting reinforcement plate 202 and back floor longeron body 1 are higher, can improve the reinforcing effect of back sub-frame front mounting reinforcement plate 202 to back floor longeron body 1.

The rear floor longitudinal beam of the embodiment is characterized in that the transverse reinforcing pieces 2 and the longitudinal reinforcing pieces 3 are staggered along the front-rear direction of the vehicle and respectively reinforce the left-right direction and the front-rear direction of the rear floor longitudinal beam, so that the longitudinal bearing capacity of the rear floor longitudinal beam is improved, the integral mounting strength of the rear floor assembly can be improved, the dynamic stiffness and the driving comfort of the vehicle are improved, and the impact resistance performance is improved.

Example two

The present embodiment relates to a vehicle, the rear floor assembly of which comprises a rear floor rail as described above.

The vehicle of the embodiment and the aforementioned rear floor stringer have the same beneficial effects as those of the prior art, and are not described herein.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (10)

1. A rear floor stringer, characterized in that:

Comprises a rear floor longitudinal beam body (1) and a reinforcing structure arranged in the rear floor longitudinal beam body (1);

A rear floor stringer cavity (103) extending in the front-rear direction of the vehicle is formed in the rear floor stringer body (1);

The reinforcing structure is located in the rear floor longitudinal beam cavity (103) and comprises a plurality of transverse reinforcing pieces (2) and a plurality of longitudinal reinforcing pieces (3), the transverse reinforcing pieces (2) and the longitudinal reinforcing pieces (3) are sequentially staggered in the front-rear direction of the vehicle, the transverse reinforcing pieces (2) extend in the left-right direction of the vehicle, and the longitudinal reinforcing pieces extend in the front-rear direction of the vehicle.

2. The rear floor stringer of claim 1, wherein:

The transverse reinforcement (2) comprises a rear shock absorber inner supporting plate (201), and the rear shock absorber inner supporting plate (201) is arranged corresponding to a shock absorption spring mounting point (5) in the front-rear direction of the vehicle;

The upper portion of the rear damper inner support plate (201) is connected with the top wall (1032) of the rear floor longitudinal beam cavity (103), and the lower portion of the rear damper inner support plate (201) is connected with the bottom wall (1031) of the rear floor longitudinal beam cavity (103).

3. The rear floor stringer of claim 2, wherein:

the rear shock absorber inner supporting plate (201) comprises a supporting plate main body (2011) with a cross section of '匚', wherein the supporting plate main body (2011) comprises two first transverse plates (20111) arranged at intervals, and a first longitudinal plate (20112) connected between the two first transverse plates (20111);

A rear floor longitudinal beam middle section reinforcing plate (4) is arranged in the rear floor longitudinal beam cavity (103), and the rear floor longitudinal beam middle section reinforcing plate (4) is correspondingly arranged with the damping spring mounting point (5) in the front-rear direction of the vehicle and is connected to the bottom wall (1031) of the rear floor longitudinal beam cavity (103);

Two first transverse flanges (401) and first longitudinal flanges (402) which are bent upwards are arranged on the middle section reinforcing plate (4) of the rear floor longitudinal beam, the two first transverse flanges (401) are respectively connected with the two first transverse plates (20111) in a lap joint mode, and the first longitudinal flanges (402) are connected with the first longitudinal plates (20112) in a lap joint mode.

4. A rear floor stringer according to claim 3, wherein:

Each first transverse plate (20111) is provided with a first flanging (2012) and a second flanging (2013), each first transverse plate (20111) is connected with the top wall (1032) of the rear floor longitudinal beam cavity (103) through the first flanging (2012), and each first transverse plate (20111) is connected with the inner side wall (1033) of the rear floor longitudinal beam cavity (103) through the second flanging (2013).

5. The rear floor stringer of any of claims 2-4, wherein:

The transverse reinforcement (2) further comprises a rear auxiliary frame front mounting reinforcing plate (202), and the rear auxiliary frame front mounting reinforcing plate (202) is correspondingly arranged with the rear floor middle cross beam in the front-rear direction of the vehicle;

Front mounting reinforcing plate flanges (2021) are respectively arranged on the periphery of the front mounting reinforcing plate (202) of the rear auxiliary frame, and the front mounting reinforcing plate (202) of the rear auxiliary frame is respectively connected with the top wall (1032), the bottom wall (1031), the inner side wall (1033) and the outer side wall of the rear floor longitudinal beam cavity (103) through the front mounting reinforcing plate flanges (2021) on the periphery.

6. The rear floor stringer of claim 5, wherein:

a rear auxiliary frame front mounting nut (6) is arranged in the rear floor longitudinal beam cavity (103), and one side of a rear auxiliary frame front mounting reinforcing plate (202) is connected with the rear auxiliary frame front mounting nut (6);

The rear sub-frame front nut support plate (7) for supporting the rear sub-frame front mounting nut (6) is arranged in the rear floor longitudinal beam cavity (103), the rear sub-frame front nut support plate (7) is connected to the bottom wall (1031) of the rear floor longitudinal beam cavity (103), and part of the rear sub-frame front nut support plate (7) is connected with the front mounting reinforcing plate flanging (2021) connected with the bottom wall (1031) in a lap joint mode.

7. The rear floor stringer of claim 5, wherein:

The longitudinal reinforcement (3) comprises a rear sub-frame rear mounting reinforcing plate (301), the rear sub-frame rear mounting reinforcing plate (301) is arranged corresponding to a rear floor rear cross beam in the front-rear direction of the vehicle, and the rear sub-frame rear mounting reinforcing plate (301) is positioned in the middle of the rear floor longitudinal beam cavity in the left-right direction of the vehicle;

The rear sub-frame rear mounting reinforcing plate (301) is provided with a plurality of first reinforcing ribs (3011), the plurality of first reinforcing ribs (3011) are arranged at intervals along the front-rear direction of the vehicle, and each first reinforcing rib (3011) extends along the up-down direction of the vehicle.

8. The rear floor stringer of claim 7, wherein:

The upper side and the lower side of the rear auxiliary frame rear installation reinforcing plate (301) are respectively provided with a first upper side flanging (3012) and a first lower side flanging (3013), the rear auxiliary frame rear installation reinforcing plate (301) is connected with the top wall (1032) of the rear floor longitudinal beam cavity (103) through the first upper side flanging (3012), and the rear auxiliary frame rear installation reinforcing plate (301) is connected with the bottom wall (1031) of the rear floor longitudinal beam cavity (103) through the first lower side flanging (3013).

9. The rear floor stringer of claim 7, wherein:

The longitudinal reinforcement (3) further comprises a rear floor longitudinal beam front reinforcement plate (302) positioned between the rear subframe front mounting reinforcement plate (202) and the rear shock absorber inner support plate (201), and the rear floor longitudinal beam front reinforcement plate (302) is positioned in the middle of the rear floor longitudinal beam cavity in the left-right direction of the vehicle;

The back floor longitudinal beam front reinforcing plate (302) is bent along with the bending direction of the back floor longitudinal beam body (1), the upper side and the lower side of the back floor longitudinal beam front reinforcing plate (302) are respectively provided with a second upper side flanging (3021) and a second lower side flanging (3022), the back floor longitudinal beam front reinforcing plate (302) is connected with the top wall (1032) of the back floor longitudinal beam cavity (103) through the second upper side flanging (3021), and the back floor longitudinal beam front reinforcing plate (302) is connected with the bottom wall (1031) of the back floor longitudinal beam cavity (103) through the second lower side flanging (3022).

10. A vehicle, characterized in that:

The rear floor assembly of a vehicle comprising the rear floor rail of any one of claims 1-9.