CN210258579U

CN210258579U - Front floor assembly

Info

Publication number: CN210258579U
Application number: CN201921060905.2U
Authority: CN
Inventors: 汪隋; 宋正超; 范俊; 张伟伟; 张鹏飞
Original assignee: SAIC General Motors Corp Ltd; Pan Asia Technical Automotive Center Co Ltd
Current assignee: SAIC General Motors Corp Ltd; Pan Asia Technical Automotive Center Co Ltd
Priority date: 2019-07-09
Filing date: 2019-07-09
Publication date: 2020-04-07
Anticipated expiration: 2029-07-09

Abstract

The embodiment of the utility model discloses preceding floor assembly, including preceding floor, sled board, central channel, first crossbeam, second crossbeam and third crossbeam, snow sled board, central channel, three crossbeams are all fixed on the same face of preceding floor, the both ends of three crossbeams respectively with central channel and sled board fixed connection, the second crossbeam is located between first crossbeam and the third crossbeam. Utilize the embodiment of the utility model provides a not only can increase the area of connection on crossbeam and preceding floor, make three crossbeams have stronger bending resistance, effectively reduce the shake on preceding floor, thereby effectively improve the NVH performance of whole car, improve and take the comfort level, but also the transmission route of increasement power, will come from the power of ground torsion direction and effectively disperse, improve the torsional rigidity of whole car, thereby increase the durability of whole car structure, the intensity on preceding floor still can be increased simultaneously, make the front seat draw the pulling security performance and improve, improve factor of safety by bus, and simple structure, easily make and install.

Description

Front floor assembly

Technical Field

The utility model relates to the field of automotive technology, concretely relates to front floor assembly.

Background

NVH (Noise, Vibration, Harshness, Noise, Vibration, Harshness) is most directly perceived by consumers. The NVH performance of the front floor, which is the most important passenger-carrying function, directly affects the comfort of the front and even rear occupants, and is of course important.

At present, in order to reduce NVH of the front floor, accessories such as a vibration damping pad, a sound insulation pad, a damping sheet and a mass block need to be additionally arranged on the front floor. The inventor discovers in the process of realizing the utility model that the NVH can be improved by the additives, but for the structural performance of the whole vehicle, the safety performance, such as the torsional rigidity of the whole vehicle, the seat pulling, the improvement is limited, the manufacturing cost is higher, and the reduction of the production cost of the vehicle is not facilitated.

SUMMERY OF THE UTILITY MODEL

In view of the above, an embodiment of the present invention provides a front floor assembly to solve the above technical problems.

An embodiment of the utility model provides a front floor assembly, it includes: front floor, sled board, central channel, first crossbeam, second crossbeam and third crossbeam are all fixed on the same face of front floor, the both ends of first crossbeam, the both ends of second crossbeam and the both ends of third crossbeam respectively with central channel and sled board fixed connection, the second crossbeam is located between first crossbeam and the third crossbeam.

Optionally, the first beam includes a base plate, two side plates extend from two sides of the base plate in the same extending direction, the two side plates and the base plate form a groove, each of the side plates is turned outwards to form a first turned edge fixedly connected to the front floor, one end of the groove connected to the central channel is turned outwards to form a second turned edge, and the second turned edge is connected to the central channel.

Optionally, the base plate extends in a direction away from the central channel to form extension plates, the extension plates are fixedly connected with the side plates and the first flanges respectively, and the extension plates are fixedly connected with the sled plate.

Optionally, the base plate is divided into a front section and a rear section along a direction from the sled plate to the central channel, and an included angle between an extending direction of the front section and an extending direction of the rear section is an obtuse angle.

Optionally, at least two welding process holes are arranged on the substrate.

Optionally, a recess is provided on the substrate, and the recess is located between the two welding process holes.

Optionally, the first flange is provided with a first reinforcing rib, and the bottom of the recess is provided with a second reinforcing rib.

Optionally, the first cross beam is a variable cross-section straight beam or a variable cross-section bent beam.

Optionally, the length of the first cross beam is 400mm, the depth of the groove body is 10-80mm, and the distance between the central axis in the extending direction of the rear section and the central axis in the extending direction of the second cross beam is 350 mm.

Optionally, the number of the skis, the first cross beam, the second cross beam and the third cross beam is two, and the two skis, the first cross beam, the second cross beam and the third cross beam are symmetrically arranged on two sides of the central passage.

The embodiment of the utility model provides a preceding floor assembly is through setting up preceding floor and the sled board of fixing on preceding floor, central channel, first crossbeam, second crossbeam and third crossbeam, sled board is connected with central channel through three crossbeams, not only can increase the connection area on crossbeam and preceding floor, make three crossbeams have stronger bending resistance, effectively reduce the shake on preceding floor, thereby effectively improve the NVH performance of whole car, improve passenger's the comfort level of taking, and the transmission route of still can increase power, will come from the power of ground torsion direction and effectively disperse, improve the torsional rigidity of whole car, thereby increase the durability of whole car structure, the intensity on preceding floor still can be increased simultaneously, make the front seat draw and draw the security performance and improve, improve factor of safety by bus, and simple structure, easily make and install.

Drawings

Fig. 1 is a schematic structural diagram of a front floor assembly according to an embodiment of the present invention.

Fig. 2 is an assembly view of a front floor assembly according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of the first cross member according to the embodiment of the present invention.

Fig. 4 is a schematic cross-sectional view of a first cross member according to an embodiment of the present invention.

Detailed Description

The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Fig. 1 shows a schematic structural diagram of a front floor assembly according to an embodiment of the present invention, as shown in fig. 1, an embodiment of the present invention provides a front floor assembly, which includes: the front floor comprises a front floor 1, and a ski board 2, a central channel 3, a first cross beam 4, a second cross beam 5 and a third cross beam 6 which are fixed on the same board surface of the front floor 1.

And two ends of the first beam 4, two ends of the second beam 5 and two ends of the third beam 6 are respectively and fixedly connected with the central channel 3 and the ski board 2. In this embodiment, the fixing connection may be performed by spot welding.

In one embodiment, the center tunnel 3 may be a prior art center tunnel of a vehicle, the second cross member 5 may be a prior art lower body No. 2 beam, and the third cross member 6 may be a prior art lower body No. 3 beam.

The second beam 5 is located between the first beam 4 and the third beam 6.

As shown in fig. 1-2, the first beam 4 is spaced from the second beam 5 by a distance less than the second beam 5 is spaced from the third beam 6.

When the front floor is installed, as shown in fig. 2, one end of each of the first cross member 4, the second cross member 5, and the third cross member 6 is fixedly connected to the sled plate 2.

Then, the other ends of the first beam 4, the second beam 5 and the third beam 6 are respectively and fixedly connected with the central channel 3 to form a front floor framework.

In the present embodiment, the number of the first beam 4, the second beam 5, the third beam 6 and the ski 2 is two.

Two skis 2, a first beam 4, a second beam 5 and a third beam 6 are symmetrically arranged on both sides of the central channel 3 to increase the strength of the front floor assembly.

Finally, the front floor frame is mounted on the front floor 1, wherein the ski 2, the central channel 3, the first beam 4, the second beam 5 and the third beam 6 are welded to the front floor 1. The welding mode can adopt spot welding.

Preferably, as shown in fig. 3, the first beam 4 includes a base plate 41, two side plates 42 extend from two sides of the base plate 41 in the same extending direction, and the two side plates 42 and the base plate 41 form a groove.

Each side plate 42 is turned outwards to form a first turned edge 43 fixedly connected with the front floor 1, wherein the inner part of the area enclosed by the groove body is 'inner'.

One end of the groove body, which is connected with the central channel 3, is turned outwards to form a second turned edge 48, and the second turned edge 48 is connected with the central channel 3.

The first cross beam 4 is arranged to be of a groove body structure, and the end part of the groove body and the two side plates 42 are respectively provided with the flanges, so that the structure of the first cross beam 4 can be simplified, and the strength of the first cross beam 4 can be increased.

As shown in fig. 4, a second flange 48 is provided on the circumferential edge of the end of the channel body connected to the central channel 3 to increase the connection with the central channel 3.

Optionally, the second flange 48 is substantially perpendicular to the length direction of the first beam 4 to facilitate the arrangement of the second flange 48.

Further, the base plate 41 extends away from the central passage 3, forming an extension plate 44.

The extension plate 44 is fixedly connected with the side plate 42 and the first flange 43, and the three can be integrally formed. The extension plate 44 is fixedly connected to the ski 2.

The extension plate 44 is pressed on the sled plate 2, and the sled plate 2 is connected to the first cross member 4, so that the contact surface between the extension plate 44 and the sled plate 2 can be increased, and the connection firmness can be improved.

Optionally, the base plate 41 is divided into a front section and a rear section in the direction from the ski 2 to the central channel 3. Wherein the front section is connected with the sled plate 2 and the rear section is connected with the central channel 3.

The included angle theta between the front section extending direction and the rear section extending direction is an obtuse angle, so that the first cross beam 3 can be conveniently connected with the ski board 2 and the central channel 3, and the assembly efficiency is improved.

More preferably, the substrate 41 is provided with at least two welding process holes 45, which not only reduces welding beading and improves the aesthetic property, but also facilitates the processing and assembly of the first beam 4.

In one embodiment, the diameter of the welding process bore 45 is about 30mm to facilitate welding.

Further, a recess is provided on the substrate 41, and the recess is located between the two welding process holes 45. In the present embodiment, the width of the recess may be equal to the width of the substrate 41.

Through setting up the depressed part, can make first diaphragm 4 become the variable cross section crossbeam, adopt great cross-section in the great department of moment of flexure promptly, adopt less cross-section in the less department of moment of flexure, not only can further increase first crossbeam 4's intensity, but also can conveniently process reduce cost.

Preferably, the first flange 43 is provided with a first reinforcing rib 47, and the bottom of the recess is provided with a second reinforcing rib 46, so that the rigidity of the first cross beam 4 can be further increased.

As shown in fig. 3 to 4, the number of the first reinforcing ribs 47 is plural, and the plural first reinforcing ribs 47 are distributed along the length direction of the first burring 43.

A recess is provided on the first flange 43, and the recess corresponds to the position of the recess. The first reinforcing rib 47 is positioned at the bottom of the recess, and the length direction of the first reinforcing rib 47 is perpendicular to the side plate 42.

In a specific embodiment, the first reinforcement rib 47 is formed by the first flange 43 protruding toward the plate surface of the front floor panel 1 and away from the front floor panel 1, so as to facilitate the manufacturing process.

As shown in fig. 4, the number of the second ribs 46 is two, and the extending direction thereof coincides with the longitudinal direction of the substrate 41.

Wherein the welding process holes 45 close to the central passage 3 are located between two second reinforcing beads 46, which facilitates the arrangement of the second reinforcing beads 46.

Furthermore, the substrate 41 is provided with lightening holes corresponding to the welding process holes 45 one by one, the lightening holes are arranged close to the welding process holes 45, and the inner diameter of the lightening holes is smaller than that of the welding process holes 45.

Through setting up the lightening hole, can further reduce the dead weight of first crossbeam 4, convenient assembly and processing.

Alternatively, the first cross beam 4 may adopt a variable cross section straight beam or a variable cross section bent beam in the prior art, so as to further reduce the production cost.

In one embodiment, as shown in fig. 3-4, the length L of the first beam 4 is 400mm, and the width W of the first beam 4 is 150mm, respectively, which is 300 mm and 100 mm.

The depth H of the groove body is 10-80mm, and the distance D between the central axis in the extending direction of the rear section and the central axis in the extending direction of the second cross beam is 180-350 mm.

In one embodiment, the first beam 4 may be made of a common mild steel plate with a thickness of 0.8-1.8mm, so as to further reduce the production cost.

Further, the first cross beam 4 can be formed by punching, so that the production cost can be further reduced.

The technical solution of the present invention is described in detail with reference to the specific embodiments, and the described specific embodiments are used to help understand the idea of the present invention. The derivation and modification made by the person skilled in the art on the basis of the specific embodiments of the present invention also belong to the protection scope of the present invention.

Claims

1. A front floor assembly, comprising: front floor, sled board, central channel, first crossbeam, second crossbeam and third crossbeam are all fixed on the same face of front floor, the both ends of first crossbeam, the both ends of second crossbeam and the both ends of third crossbeam respectively with central channel and sled board fixed connection, the second crossbeam is located between first crossbeam and the third crossbeam.

2. The front floor assembly according to claim 1, wherein the first beam comprises a base plate, two side plates extend from two sides of the base plate in the same extending direction, the two side plates and the base plate form a groove, each side plate is folded outwards to form a first flange fixedly connected with the front floor, one end of the groove connected with the central channel is folded outwards to form a second flange, and the second flange is connected with the central channel.

3. A front floor assembly according to claim 2, wherein the base plate extends away from the central channel to form extension plates fixedly connected to the side plates and the first flange, respectively, and fixedly connected to the ski.

4. A front floor assembly according to claim 3 wherein the base plate is divided into a forward section and a rearward section in the direction from the ski to the central channel, the forward section extending at an obtuse angle to the rearward section.

5. The front floor assembly according to claim 4, wherein the substrate has at least two welding process holes disposed therein.

6. The front floor assembly according to claim 5, wherein the baseplate is provided with a recess between two welding-process holes.

7. The front floor assembly of claim 6, wherein the first flange has a first reinforcement rib disposed thereon and the bottom of the recess has a second reinforcement rib disposed thereon.

8. A front floor assembly according to claim 4, wherein the first beam is a variable cross-section straight beam or a variable cross-section bent beam.

9. The front floor assembly as claimed in claim 8, wherein the length of the first beam is 300-400mm, the depth of the groove is 10-80mm, and the distance between the central axis of the rear section extending direction and the central axis of the second beam extending direction is 180-350 mm.

10. A front floor assembly according to any of claims 1 to 9, wherein the number of skis, first, second and third beams is two, and two skis, first, second and third beams are symmetrically disposed on either side of the central passage.