CN217554007U

CN217554007U - Aluminum alloy threshold beam and automobile

Info

Publication number: CN217554007U
Application number: CN202221285105.2U
Authority: CN
Inventors: 周迎娥
Original assignee: Chongqing Changan Automobile Co Ltd
Current assignee: Chongqing Changan Automobile Co Ltd
Priority date: 2022-05-26
Filing date: 2022-05-26
Publication date: 2022-10-11
Anticipated expiration: 2032-05-26

Abstract

The utility model provides an aluminum alloy threshold roof beam and car for solve because the relatively poor threshold roof beam bending strength leads to high-speed collision in-process threshold roof beam to warp too big problem. The technical scheme of the utility model for this aluminum alloy doorsill roof beam includes: the outer threshold beam and the inner threshold beam are integrally formed by extrusion; the collision barrier covering area of the outer threshold beam is divided into a plurality of independent first hollow cavities due to the arrangement of a plurality of first reinforcing ribs, and the collision barrier covering area of the inner threshold beam is divided into a plurality of independent second hollow cavities due to the arrangement of a plurality of second reinforcing ribs; one part of the first reinforcing ribs and the outer threshold beam are arranged in a non-inclined mode, and the other part of the first reinforcing ribs and the outer threshold beam are arranged vertically; wherein, be the slope setting between partly second strengthening rib and the interior threshold roof beam, be perpendicular setting between another part second strengthening rib and the interior threshold roof beam.

Description

Aluminum alloy threshold beam and automobile

Technical Field

The utility model relates to a vehicle spare part field, concretely relates to electric automobile thickness-changing aluminum alloy threshold and car.

Background

In the current automobile development, the automobile safety is the most important thing, the automobile safety is more and more emphasized by people, the limbs and internal organs of a driver are extruded and damaged due to side collision, and the life safety of passengers in the automobile is seriously damaged. The automobile doorsill beam structure is an important structure for guaranteeing the side collision safety performance of an automobile, and meanwhile, because a new energy battery is arranged in an electric automobile, the doorsill position needs to protect the battery besides the requirement for meeting the safety requirement of a driver of a conventional fuel automobile, and the safety requirement of the battery during collision is met.

At present, new energy automobiles are more and more on the market, and in order to have better endurance mileage, the structure of a body-in-white is required to be lighter and stronger, so that the aluminum alloy is widely applied to the new energy automobile body, various ideal sections can be designed according to performance requirements by an aluminum alloy extruding process, and the aluminum alloy extruding machine is simple in manufacturing process and convenient to install.

The inside cavity that adds the reinforcement structure for traditional panel beating threshold structure, bending strength is relatively poor, is not enough to resist the impact that causes among the high-speed collision process.

SUMMERY OF THE UTILITY MODEL

The utility model provides an aluminum alloy threshold roof beam and car for solve because the relatively poor high-speed collision in-process threshold roof beam deformation too big problem that leads to of threshold roof beam bending strength.

The technical scheme of the utility model is that:

the utility model provides an aluminum alloy doorsill beam, include: the outer threshold beam and the inner threshold beam are integrally formed through extrusion;

the collision barrier covering area of the outer threshold beam is divided into a plurality of independent first hollow cavities due to the arrangement of a plurality of first reinforcing ribs, and the collision barrier covering area of the inner threshold beam is divided into a plurality of independent second hollow cavities due to the arrangement of a plurality of second reinforcing ribs;

one part of the first reinforcing ribs and the outer threshold beam are arranged in a non-inclined mode, and the other part of the first reinforcing ribs and the outer threshold beam are arranged vertically;

one part of the second reinforcing ribs are obliquely arranged with the inner threshold beam, and the other part of the second reinforcing ribs are vertically arranged with the inner threshold beam;

the collision barrier coverage area of the outer rocker beam and the collision barrier coverage area of the inner rocker beam are determined according to the R point of the entire vehicle seat.

Preferably, the thickness of the first reinforcing rib is greater than that of the second reinforcing rib; the thickness of one part of the second reinforcing ribs is larger than that of the other part of the second reinforcing ribs.

Preferably, the first hollow cavity in the middle has the smallest volume and the highest compressive strength;

the second hollow cavity in the middle has the smallest volume and the highest compressive strength.

Preferably, a reinforcement is provided on the bottom plate of the inner rocker beam, said reinforcement being provided inside the inner rocker beam.

Preferably, a first lap edge lapped with the floor of the compartment extends from one side, facing the interior of the vehicle, of the inner threshold beam;

and a second overlapping edge overlapped with the outer skin of the side wall extends from one side of the outer threshold beam facing the roof.

Preferably, one side of the inner threshold beam facing the inside of the vehicle is provided with a first bolt hole assembled with a casting part at the root part of the front longitudinal beam, and one side of the inner threshold beam facing the inside of the vehicle is also provided with a second bolt hole assembled with the rear floor beam.

Preferably, the bottom plate of the inner rocker beam is provided with a third bolt hole for being matched with the battery pack.

Preferably, the thickness of reinforcement is less than the thickness of the bottom plate of interior threshold roof beam, just the turn-ups extends out to the cavity of interior threshold roof beam in the both ends of reinforcement.

The utility model also provides an automobile, including foretell aluminum alloy threshold roof beam.

The beneficial effects of the utility model are that:

the automobile body collision safety protection device has the advantages that the B column invasion speed and the invasion amount can be effectively reduced in the side collision working condition, the passenger living space is increased, meanwhile, the battery pack is guaranteed not to deform when the automobile body is impacted, the automobile collision safety is improved, the weight of the automobile body is reduced, and the purpose of reducing the weight of the automobile body is achieved. Specifically, the method comprises the following steps:

1. the structure strength is stronger, and the manufacturing process is simpler;

2. the lap joint installation adopts a mode of combining riveting and bolt connection, and the production and installation process is quicker;

3. the doorsill structure with different thicknesses and cross sections not only ensures the side collision safety, but also realizes the light weight, and can be used as a platform vehicle type structural member.

Drawings

FIG. 1 is an isometric view of an aluminum alloy doorsill beam of the present invention;

FIG. 2 is a right side view of the aluminum alloy doorsill beam of the present invention;

FIG. 3 is a rear view of the aluminum alloy doorsill beam of the present invention;

in the figures, 1-second lap edge; 2-a first overlapping edge; 3-outer sill beam, 31, 32-first reinforcement rib; 4-inner sill beam, 41, 42, 43-second reinforcing rib, 44-second bolt hole; 45-first bolt hole; 5-a reinforcement; 6-bottom plate, 61-third bolt hole.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1-3, the utility model provides an aluminum alloy doorsill beam, main design direction is from anti crooked aspect to designing the doorsill beam.

This aluminum alloy threshold roof beam extrusion includes: the outer rocker beam 3 and the inner rocker beam 4 are formed as one body by pressing.

Wherein, the outer rocker 3 is divided into 3 first hollow cavities by two first reinforcing

beads

31 and 32 inside the outer rocker 3. Since the height of the car from the ground is fixed, and the side collision barrier covering area of the threshold beam is mainly above the first reinforcing rib 32, in order to effectively increase the bending rigidity of the outer threshold beam 3 and increase the first hollow cavity energy absorption of the outer threshold beam 3, the thicknesses of the two first reinforcing

ribs

31 and 32 are set to be about 3.5mm, and the middle cavity in the 3 first hollow cavities has the smallest force transmission and the highest strength; in order to better control the deformation of the rocker 3 and to allow a reasonable collapse thereof, one of the first reinforcement ribs 31 is inclined at an angle (e.g. an angle of 95 °) to the rocker wall to induce the deformation of the rocker 3, and the other first reinforcement rib 32 is arranged perpendicularly to the rocker 3.

The inner threshold beam is provided with 3

second reinforcing ribs

41, 42 and 43 to divide the inner threshold beam into 4 cavities, the reinforcing

ribs

41 and 42 are also positioned in the covering area of the collision barrier, in order to effectively increase the bending rigidity of the inner threshold beam 4 and increase the energy absorption capacity of the cavity of the inner threshold beam, the thickness of the second reinforcing

ribs

41 and 42 is set to be 3.0mm, the middle cavity of the main force transmission part in the 3 hollow cavities is the smallest and the highest in strength, and the thickness of the second reinforcing rib 43 which does not absorb energy mainly is set to be 2.5mm. In order to protect the safety of the battery pack and prevent the rocker from deforming and colliding with the battery pack, the thickness of the bottom plate 6 of the inner rocker beam 4 is 3.2mm, and the weight is reduced while the side impact resistance is improved by adding the reinforcement 5 having the thickness of 2.5mm.

The utility model discloses threshold roof beam production adopts present ripe extrusion mode, can generate different cross-sectional thickness, and has good disconnected back percentage elongation attribute. During the installation, longeron root casting spare and A stand before the front end overlap joint of this threshold roof beam, connect and adopt bolted connection and riveting combination mode, the rear end overlap joint of threshold roof beam back floor roof beam and C post, connect and adopt bolted connection and riveting combination mode, the floor is lapped to the side of threshold roof beam, connects all to adopt the riveting mode, the bottom installation battery package of threshold roof beam, connects and adopts bolted connection.

Specifically, the front end of the rocker beam and the root casting of the front side member are connected by a combination of bolting and riveting, 45 being the first bolt hole for connection. The rear end of the threshold beam is connected to the rear floor beam by a combination of bolting and riveting, 44 being a second bolt hole to which it is connected. The upper part of the threshold beam is lapped with the outer skin of the side wall through a second lapping edge 1, and the connection mode is riveting. The threshold beam is in lap joint with the carriage floor through the first lap joint edge 2, and the connection mode is riveting.

In addition, in order to protect the safety of the battery pack and prevent the sill beam from deforming and impacting the battery pack, the thickness of the bottom plate 6 is 3.2mm, the thickness of the reinforcing piece 5 is increased to be 2.5mm, and flanges with the height of 5mm are arranged on two sides of the reinforcing piece 5, so that the forming is convenient, and the lateral bending rigidity is improved. The battery pack is connected with the bottom plate 6 through bolts, and 61 is a third bolt hole.

Claims

1. An aluminum alloy doorsill beam, comprising: an outer sill beam (3) and an inner sill beam (4) which are formed into a whole by extrusion;

the collision barrier covering area of the outer threshold beam (3) is divided into a plurality of independent first hollow cavities due to the arrangement of a plurality of first reinforcing ribs, and the collision barrier covering area of the inner threshold beam (4) is divided into a plurality of independent second hollow cavities due to the arrangement of a plurality of second reinforcing ribs;

one part of the first reinforcing ribs and the outer threshold beam (3) are arranged in a non-inclined mode, and the other part of the first reinforcing ribs and the outer threshold beam (3) are arranged in a vertical mode;

one part of the second reinforcing ribs are obliquely arranged with the inner threshold beam (4), and the other part of the second reinforcing ribs are vertically arranged with the inner threshold beam (4);

the collision barrier covering area of the outer threshold beam (3) and the collision barrier covering area of the inner threshold beam (4) are determined according to the R point of the whole vehicle seat.

2. The aluminum alloy rocker beam of claim 1 wherein the first bead has a thickness greater than the thickness of the second bead; the thickness of one part of the second reinforcing ribs is larger than that of the other part of the second reinforcing ribs.

3. The aluminum alloy rocker beam of claim 1,

the first hollow cavity in the middle has the smallest volume and the highest compressive strength;

4. Aluminum alloy rocker beam according to claim 1, characterised in that a reinforcement (5) is provided on the bottom plate (6) of the inner rocker beam (4), which reinforcement (5) is provided inside the inner rocker beam (4).

5. The aluminum alloy rocker beam according to claim 1, wherein the inner rocker beam (4) has a first overlap edge (2) extending towards the side of the vehicle interior in overlapping relation with the floor of the vehicle compartment;

and a second overlapping edge (1) which is overlapped with the outer skin of the side wall extends out of one side of the outer threshold beam (3) facing the roof.

6. Aluminum alloy rocker beam according to claim 1, characterised in that the rocker beam (4) on the side facing into the vehicle is provided with a first bolt hole (45) fitted in the casting in the root of the front sill and that the rocker beam (4) on the side facing into the vehicle is provided with a second bolt hole (44) fitted in the back floor beam.

7. Aluminum alloy rocker beam according to claim 4, characterised in that the bottom plate (6) of the inner rocker beam (4) is provided with a third bolt hole (61) for fitting with a battery pack.

8. Aluminum alloy rocker beam according to claim 4, characterised in that the thickness of the reinforcement (5) is smaller than the thickness of the bottom plate (6) of the inner rocker beam (4), and that flanges extend from the ends of the reinforcement (5) into the cavity of the inner rocker beam (4).

9. An automobile comprising the aluminum alloy rocker beam defined in any one of claims 1 to 8.