CN218258403U - Rear floor longitudinal beam structure and automobile - Google Patents

Abstract

The utility model provides a back floor longeron structure and car, the utility model discloses a back floor longeron structure is including consecutive back floor longeron anterior segment, back floor longeron middle section and back floor longeron back end, and back floor longeron anterior segment and back floor longeron middle section die-casting shaping, and back floor longeron back end adopts the extrusion aluminium structure. Rear floor longeron structure, adopt integrative die-casting shaping through rear floor longeron anterior segment and rear floor longeron middle section, rear floor longeron back end adopts the extrusion aluminium structure, can be convenient for the shaping of each part of rear floor longeron, also can guarantee rear floor longeron's structural strength, improve its transmission performance to bumping power after, simultaneously, rear floor longeron back end adopts the extrusion aluminium structure, also does benefit to the whole length of adjustment rear floor longeron, and helps the design and development of whole car.

Description

Rear floor longitudinal beam structure and automobile

Technical Field

The utility model relates to an automobile body technical field, in particular to back floor longeron structure, simultaneously, the utility model discloses still relate to an automobile with this back floor longeron structure.

Background

The rear floor structure of an automobile is an important component of the entire automobile, and generally includes a rear floor, longitudinal beams disposed on both sides of the rear floor, a cross member portion connected between the longitudinal beams on both sides, and the like. However, the existing rear floor longitudinal beam has the problems of poor structural strength, single structural design and the like, not only influences the rear collision safety of the whole vehicle, but also is not beneficial to the design and development of the whole vehicle.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to a rear floor longitudinal beam structure having a good rear impact force transmission performance.

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

the utility model provides a back floor longeron structure, includes consecutive back floor longeron anterior segment, back floor longeron middle section and back floor longeron back end, just back floor longeron anterior segment with back floor longeron middle section die-casting shaping, back floor longeron back end adopts the extrusion aluminium structure.

Furthermore, the front section of the rear floor longitudinal beam and the middle section of the rear floor longitudinal beam are both formed by cast aluminum in a die-casting mode.

Furthermore, the rear end of the front section of the longitudinal beam of the rear floor is provided with a longitudinal beam front section overlap edge used for connecting a middle cross beam of the rear floor, and the longitudinal beam front section overlap edge is positioned on the inner side of the front section of the longitudinal beam of the rear floor; and/or the inner side of the rear section of the longitudinal beam of the rear floor is provided with a longitudinal beam rear section overlapping edge used for connecting a rear floor rear cross beam.

Furthermore, a first inserting groove is formed in the rear end of the front section of the rear floor longitudinal beam, and the front end of the middle section of the rear floor longitudinal beam is inserted into the first inserting groove and fixedly connected with the front section of the rear floor longitudinal beam through a first connecting piece; the rear end of the middle section of the rear floor longitudinal beam is provided with a second inserting groove, and the front end of the rear section of the rear floor longitudinal beam is inserted in the second inserting groove and is fixedly connected with the middle section of the rear floor longitudinal beam through a second connecting piece.

Further, the first connecting piece and the second connecting piece are bolts or FDS.

Furthermore, the rear floor longitudinal beam front section is provided with a longitudinal beam body and a cover body connected to the outer side of the longitudinal beam body, a cavity extending along the length direction of the automobile is arranged in the longitudinal beam body, the cavity is opened on the outer side wall of the longitudinal beam body, a plurality of reinforcing rib parts sequentially arranged along the length direction of the automobile are arranged in the cavity, and the cover body is closed to the opening.

Furthermore, an avoiding groove for avoiding the end part of the hydrogen tank is arranged on the inner side of the middle section of the rear floor longitudinal beam.

Furthermore, a cavity is formed in the middle section of the rear floor longitudinal beam, a plurality of first reinforcing ribs extending along the length direction of the automobile and second reinforcing ribs corresponding to the avoiding grooves are arranged in the cavity, and the second reinforcing ribs are in an X shape and are interwoven and connected with the first reinforcing ribs.

Compared with the prior art, the utility model discloses following advantage has:

rear floor longeron structure, adopt integrative die-casting shaping through rear floor longeron anterior segment and rear floor longeron middle section, rear floor longeron back end adopts the extrusion aluminium structure, can be convenient for the shaping of each part of rear floor longeron, also can guarantee rear floor longeron's structural strength, improve its transmission performance to bumping power after, simultaneously, rear floor longeron back end adopts the extrusion aluminium structure, also does benefit to the whole length of adjustment rear floor longeron, and helps the design and development of whole car.

In addition, back floor longeron anterior segment and back floor longeron middle section all adopt cast aluminium die-casting molding, can reduce weight, are favorable to realizing the lightweight. The arrangement of the overlapping edge of the front section of the longitudinal beam and the overlapping edge of the rear section of the longitudinal beam can be beneficial to the overlapping connection between the front section of the longitudinal beam of the rear floor and the middle cross beam of the rear floor and between the rear section of the longitudinal beam of the rear floor and the rear cross beam of the rear floor, and the connecting stability is good.

In addition, the cavity is favorable for the lightweight design of the rear floor longitudinal beam, and the structural strength of the rear floor longitudinal beam can be ensured by arranging the reinforcing rib parts. And the design avoids the groove, can make the structure more reasonable, helps the hydrogen tank to arrange. The second reinforcing ribs are interwoven and connected with the first reinforcing ribs, so that the structural strength of the middle section of the rear floor longitudinal beam, particularly the avoidance groove position can be ensured, a force transmission channel is formed, the rear impact force is transmitted and dispersed forwards, and the collision safety of the whole structure is improved.

Another object of the utility model is to provide a car, the rear portion of car is equipped with as above back floor longeron structure.

Further, a rear floor middle cross beam is connected between the front sections of the rear floor longitudinal beams on the two sides, and a rear floor rear cross beam is connected between the rear sections of the rear floor longitudinal beams on the two sides; the rear floor middle cross beam and the rear floor rear cross beam are respectively provided with a hydrogen tank mounting point, the rear floor middle cross beam, the rear floor rear cross beam and two sides of the rear floor longitudinal beam front section, the rear floor longitudinal beam middle section and the rear floor longitudinal beam rear section are connected to form an annular structure, and a hydrogen tank mounting space is limited in the annular structure.

Car and foretell back floor longeron structure, have the same technological effect, no longer give consideration to here.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic view illustrating a rear floor structure according to an embodiment of the present invention disposed in a vehicle body;

fig. 2 is a schematic structural view of a rear floor longitudinal beam structure according to an embodiment of the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 2;

FIG. 4 is a schematic view of the structure shown in FIG. 2 from another perspective;

fig. 5 is a schematic structural view of a front section of a rear floor stringer according to an embodiment of the present invention;

FIG. 6 is a schematic view of the structure shown in FIG. 5 from another perspective;

fig. 7 is a schematic structural view of a middle section of a rear floor stringer according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a rear section of a rear floor stringer according to an embodiment of the present invention;

fig. 9 is a schematic structural view of a cover according to an embodiment of the present invention;

fig. 10 is a schematic structural view of a cross beam in the rear floor according to an embodiment of the present invention;

fig. 11 is a schematic structural view of a rear floor rear cross member according to an embodiment of the present invention;

fig. 12 is a partial schematic structural view of a rear floor structure according to an embodiment of the present invention;

FIG. 13 is a schematic view of the structure of FIG. 10 from another perspective;

description of reference numerals:

1. a stringer body; 2. a cover body; 3. a rear floor front connecting beam; 4. a threshold beam; 6. a rear floor front cross member; 7. a rear floor middle cross beam; 8. a rear floor rear cross beam; 9. a rear floor stringer rear section; 10. a rear impact beam; 11. a rear wheel cover; 12. the middle section of the longitudinal beam of the rear floor; 13. a first connecting member; 14. a second connecting member;

100. a cavity; 1001. a reinforcing rib portion; 108. a rear subframe mounting point; 109. a rear damping spring mounting point; 1012. the front section lap joint edge of the longitudinal beam; 1013. a first insertion groove;

701. a middle cross beam lap plate;

901. the back section of the longitudinal beam is lapped;

1200. a cavity; 1201. a second insertion groove; 1202. an avoidance groove; 1203. a first reinforcing rib; 1204. and a second reinforcing rib.

Detailed Description

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

In the description of the present invention, it should be noted that if terms indicating directions or positional relationships such as "up", "down", "inside", "outside", etc. appear, they are based on the directions or positional relationships shown in the drawings, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms first, second, etc. in this specification are not necessarily all referring to the same item, but are instead intended to cover the same item.

In addition, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless otherwise specifically limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood in combination with the specific situation.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example one

The embodiment relates to a rear floor longitudinal beam structure which is easy to form and manufacture, has better structural strength and can improve the rear collision safety.

In the overall structure, as shown in fig. 1 to 4, in this embodiment, the rear floor longitudinal beam structure includes a rear floor longitudinal beam front section, a rear floor longitudinal beam middle section 12 and a rear floor longitudinal beam rear section 9 which are connected in sequence, and the rear floor longitudinal beam front section and the rear floor longitudinal beam middle section 12 are formed by die-casting, and the rear floor longitudinal beam rear section 9 is of an extruded aluminum structure.

It should be noted that the rear floor frame structure of the present embodiment is an important component constituting a rear floor structure of an automobile, and as shown in fig. 1 and 12, the rear floor structure further includes a rear wheel house 11 provided on a front section of the rear floor frame, a threshold beam 4 connected to the front section of the rear floor frame, a rear impact beam 10 connected to a rear end of a rear section 9 of the rear floor frame on both sides, a rear floor front connecting beam 3, a rear floor front cross beam 6, and a rear floor middle cross beam 7 connected between the front sections of the rear floor frames on both sides, and a rear floor rear cross beam 8 connected between the rear sections 9 of the rear floor frames on both sides.

In the concrete structure, the front connecting beam 3 of the rear floor is positioned at the front ends of the front sections of the rear floor longitudinal beams on the two sides, the front cross beam 6 of the rear floor is positioned in the middle of the front sections of the rear floor longitudinal beams on the two sides, and the middle cross beam 7 of the rear floor is connected at the rear ends of the front sections of the rear floor longitudinal beams on the two sides.

Based on the above overall description, as a preferred embodiment, in this embodiment, the front section of the rear floor side member and the middle section 12 of the rear floor side member are both formed by cast aluminum die-casting, so that the weight can be reduced, and the weight can be reduced.

Referring to fig. 6 and 8, in the present embodiment, in a preferred embodiment, the rear end of the front section of the rear floor side member is provided with a front section side member overlapping edge 1012 for connecting the rear floor center cross member 7, and the front section side member overlapping edge 1012 is located inside the front section of the rear floor side member.

Therefore, the lap joint between the front section of the longitudinal beam of the rear floor and the middle cross beam 7 of the rear floor can be facilitated, and the connection stability can be good. Similarly, in this embodiment, in order to improve the convenience and stability of the lap joint of the rear floor rear cross member 8, the inner side of the rear floor longitudinal beam rear section 9 is also preferably provided with a longitudinal beam rear section lap joint 901 for connecting the rear floor rear cross member 8.

In specific implementation, as shown in fig. 6, 10 and 11, the middle cross beam lapping plate 701 is provided at the end of the middle cross beam 7 of the rear floor in an extending manner, and in order to improve the lapping stability between the front section of the longitudinal beam of the rear floor and the middle cross beam 7 of the rear floor, the front section lapping edges 1012 of the longitudinal beam are two that are arranged along the height of the front section of the longitudinal beam of the rear floor, so that the front section lapping edge 1012 of the longitudinal beam located above is used for lapping and matching with the middle cross beam lapping plate 701, and the front section lapping edge 1012 of the longitudinal beam located below is used for lapping and matching with the bottom surface of the middle cross beam 7 of the rear floor. Then, both ends of the rear floor cross member 8 are directly overlapped and arranged on the overlapping edge 901 of the rear cross member.

In addition, in the preferred embodiment, as shown in fig. 6, the rear end of the front section of the rear floor longitudinal beam is provided with a first insertion groove 1013, and the front end of the middle section 12 of the rear floor longitudinal beam is inserted into the first insertion groove 1013 and is fixedly connected with the front section of the rear floor longitudinal beam through a first connecting member 13. Therefore, the connection strength between the front section of the rear floor longitudinal beam and the middle section 12 of the rear floor longitudinal beam can be effectively improved through the connection form of splicing and connecting piece connection.

Meanwhile, in order to improve the connection strength between the middle section 12 of the rear floor longitudinal beam and the rear section 9 of the rear floor longitudinal beam, as shown in fig. 3, a second insertion groove 1201 is preferably arranged at the rear end of the middle section 12 of the rear floor longitudinal beam, and the front end of the rear section 9 of the rear floor longitudinal beam is inserted into the second insertion groove 1201 and is fixedly connected with the middle section 12 of the rear floor longitudinal beam through a second connecting member 14. In specific implementation, the first connecting part 13 and the second connecting part 14 may preferably adopt a bolt or FDS (Flow Screw bolt, spin tapping and riveting) connection manner, so that the connection form is simple, and a good connection effect can be ensured.

Referring to fig. 2 and 5, as a preferred embodiment, in the present embodiment, the front section of the rear floor stringer includes a stringer body 1 and a cover body 2 connected to the outside of the stringer body 1, a cavity 100 extending in the longitudinal direction of the vehicle is provided in the stringer body 1, the cavity 100 is open on the outer side wall of the stringer body 1, a plurality of reinforcing rib portions 1001 sequentially arranged in the longitudinal direction of the vehicle are provided in the cavity 100, and the cover body 2 forms a seal for the opening.

The cavity 100 is beneficial to the lightweight design of the rear floor longitudinal beam, and the structural strength of the rear floor longitudinal beam can be ensured by arranging the reinforcing rib part 1001. In specific implementation, in order to ensure the convenience and stability of the connection between the longitudinal beam body 1 and the cover 2, MIG (Melt Inert-gas Welding) Welding may be adopted between the bottom of the longitudinal beam body 1 and the bottom of the cover 2, and SPR (Self-Piercing riveting) connection may be adopted between the top and side positions.

Meanwhile, the structural form of the reinforcing rib portion 1001 may be set and adjusted according to the actual reinforcing requirement, and for example, may be specifically set to be substantially X-shaped in the overall structure. As shown in fig. 9, in the specific structural shape of the cover body of the present embodiment, the setting and adjustment can be performed according to the shape trend of the opening, and it is only necessary to ensure that the opening can be closed.

It should be mentioned that the bottom of the longitudinal beam body 1 is provided with a rear sub frame mounting point 108 for mounting a rear sub frame, and a rear damping spring mounting point 109 for mounting a rear damping spring, and the rear sub frame mounting points 108 are two respectively arranged near the front end and the rear end of the longitudinal beam body 1, and the rear damping spring mounting point 109 is located between the two rear sub frame mounting points 108.

In addition, in the present embodiment, as shown in fig. 7, in a preferred embodiment, an avoidance groove 1202 for avoiding the end of the hydrogen tank is provided on the inner side of the rear floor side member middle section 12, so that the structure is more reasonable, and the hydrogen tank arrangement is facilitated. The structure shape of the avoidance groove 1202 may be set and adjusted according to actual avoidance requirements.

Referring to fig. 3, in a specific implementation, a cavity 1200 is formed in the rear floor stringer middle section 12, a plurality of first reinforcing ribs 1203 extending along the length direction of the automobile and second reinforcing ribs 1204 arranged corresponding to the avoidance grooves 1202 are arranged in the cavity 1200, and the second reinforcing ribs 1204 are in an "X" shape and are interlaced with the first reinforcing ribs 1203.

So set up, can guarantee back floor longeron middle section 12, especially dodge the structural strength of groove 1202 position, also do benefit to simultaneously and form the biography power passageway, make the back power of colliding forward transmit the dispersion, and promote overall structure's collision security.

The back floor longeron structure of this embodiment, adopt integrative die-casting shaping through back floor longeron anterior segment and back floor longeron middle section 12, back floor longeron back end 9 adopts the extrusion aluminium structure, can be convenient for the shaping of each part of back floor longeron, also can guarantee the structural strength of back floor longeron, improve its transmission performance to bumping power after, and simultaneously, back floor longeron back end 9 adopts the extrusion aluminium structure, also does benefit to the whole length of adjustment back floor longeron, and helps the design and development of whole car.

Example two

The embodiment relates to an automobile, and the rear part of the automobile is provided with the rear floor longitudinal beam structure in the first embodiment.

Specifically, the rear floor longitudinal beam structure is arranged in a rear floor structure of an automobile, as shown in fig. 12 and 13, a rear floor middle cross beam 7 is connected between front sections of two sides of the rear floor longitudinal beam, a rear floor rear cross beam 8 is connected between rear sections 9 of two sides of the rear floor longitudinal beam, hydrogen tank mounting points are respectively arranged on the rear floor middle cross beam 7 and the rear floor rear cross beam 8, the rear floor middle cross beam 7, the rear floor rear cross beam 8, the front sections of the rear floor longitudinal beam, the rear floor longitudinal beam middle section 12 and the rear floor longitudinal beam rear sections 9 on two sides are connected to form an annular structure, and a hydrogen tank mounting space is defined in the annular structure.

From this, form annular structure through rear floor center sill 7, rear floor rear frame member 8 and the rear floor longeron structural connection of both sides, not only can improve the structural strength of hydrogen tank mounted position, improve the stability of hydrogen tank installation, also can promote whole car rear portion structural strength simultaneously, and bump the security after promoting.

In addition, when specifically setting up, the hydrogen tank mounting point of this embodiment sets up to be located a plurality of mounting holes on rear floor middle cross beam 7 and rear floor rear cross beam 8, and for improving the installation convenience and the stability of hydrogen tank, still can hold the intracavity in the inside of rear floor middle cross beam 7 or rear floor rear cross beam 8 and set up the threaded sleeve pipe corresponding to each mounting hole.

The automobile of this embodiment can promote whole car structural strength through setting up the back floor longeron structure in the embodiment one, does benefit to transmission and the dispersion of back collision force, helps promoting the back collision security.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A rear floor longitudinal beam structure is characterized in that:

including consecutive back floor longeron anterior segment, back floor longeron middle section (12) and back floor longeron back end (9), just back floor longeron anterior segment with back floor longeron middle section (12) die-casting shaping, back floor longeron back end (9) adopt the extrusion aluminium structure.

2. A rear floor rail structure according to claim 1, wherein:

the front section of the rear floor longitudinal beam and the middle section (12) of the rear floor longitudinal beam are both formed by cast aluminum through die-casting.

3. A rear floor rail structure according to claim 1, wherein:

the rear end of the front section of the rear floor longitudinal beam is provided with a longitudinal beam front section overlap edge (1012) used for connecting a rear floor middle cross beam (7), and the longitudinal beam front section overlap edge (1012) is positioned on the inner side of the front section of the rear floor longitudinal beam; and/or the inner side of the rear floor longitudinal beam rear section (9) is provided with a longitudinal beam rear section overlapping edge (901) used for connecting a rear floor rear cross beam (8).

4. A rear floor rail structure according to claim 1, wherein:

the rear end of the front section of the rear floor longitudinal beam is provided with a first inserting groove (1013), and the front end of the middle section (12) of the rear floor longitudinal beam is inserted in the first inserting groove (1013) and is fixedly connected with the front section of the rear floor longitudinal beam through a first connecting piece (13);

the rear floor longitudinal beam middle section (12) is provided with a second insertion groove (1201), the front end of the rear floor longitudinal beam rear section (9) is inserted in the second insertion groove (1201) and fixedly connected with the rear floor longitudinal beam middle section (12) through a second connecting piece (14).

5. The rear floor rail structure according to claim 4, wherein:

the first connecting piece (13) and the second connecting piece (14) adopt bolts or FDS.

6. A rear floor rail structure according to claim 1, wherein:

rear floor longeron anterior segment has longeron body (1), and connects lid (2) in longeron body (1) outside, be equipped with cavity (100) that extend along car length direction in longeron body (1), cavity (100) are in the lateral wall upper shed of longeron body (1), just be equipped with in cavity (100) along a plurality of strengthening rib portions (1001) that car length direction arranged in proper order, just lid (2) form right the open-ended is sealed.

7. The rear floor rail structure according to any one of claims 1 to 6, characterized in that:

and an avoidance groove (1202) for avoiding the end part of the hydrogen tank is arranged on the inner side of the middle section (12) of the rear floor longitudinal beam.

8. A rear floor rail structure according to claim 7, wherein:

a cavity (1200) is formed in the rear floor longitudinal beam middle section (12), a plurality of first reinforcing ribs (1203) extending along the length direction of the automobile and second reinforcing ribs (1204) corresponding to the avoiding grooves (1202) are arranged in the cavity (1200), and the second reinforcing ribs (1204) are in an X shape and are interwoven and connected with the first reinforcing ribs (1203).

9. An automobile, characterized in that:

the rear portion of the automobile is provided with the rear floor rail structure of any one of claims 1 to 8.

10. The automobile of claim 9, wherein:

a rear floor middle cross beam (7) is connected between the front sections of the rear floor longitudinal beams on the two sides, and a rear floor rear cross beam (8) is connected between the rear sections (9) of the rear floor longitudinal beams on the two sides;

rear floor center sill (7) with be equipped with hydrogen tank mounting point on rear floor rear frame member (8) respectively, just rear floor center sill (7) rear floor rear frame member (8), and both sides rear floor longeron anterior segment rear floor longeron middle section (12) with rear floor longeron rear section (9) are connected and are formed annular structure, prescribe a limit to hydrogen tank installation space in the annular structure.

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