CN210617936U

CN210617936U - Lightweight and high-integrity automobile seat backrest framework

Info

Publication number: CN210617936U
Application number: CN201921218483.7U
Authority: CN
Inventors: 张克梁; 王云玉; 陈建国; 唐林丁; 张亨
Original assignee: GAC Component Co Ltd
Current assignee: GAC Component Co Ltd
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2020-05-26
Anticipated expiration: 2029-07-30

Abstract

The utility model discloses a car seat back skeleton that lightweight and wholeness can be strong, including entablature, back curb plate and bottom end rail, the entablature welds mutually with the upper portion of back curb plate, the lower part of back curb plate with the bottom end rail directly weld mutually, need not to set up the reinforcing plate, still improved the wholeness of back skeleton when lightening back skeleton weight, weakened the regional intensity of being connected of back curb plate and bottom end rail to improve car seat's shock resistance and anti side direction fatigue performance. The backrest framework realizes the functions of few parts, few molds and light weight, and reduces the production cost.

Description

Lightweight and high-integrity automobile seat backrest framework

Technical Field

The utility model relates to a car seat part specifically indicates a car seat back skeleton that lightweight and wholeness can be strong.

Background

The automobile seat backrest framework is an important component of an automobile seat, and the existing backrest framework comprises an upper cross beam 1, an equal-thickness side plate 101 and a short-limb lower cross beam 102 as shown in fig. 1 and 2, wherein the equal-thickness side plate 101 is usually made of a steel plate with the thickness of 1 mm. The length of the short-limb lower cross beam 102 is 356 mm.

Seat impact performance and lateral fatigue performance are important safety features of the seat. When a seat impact test is performed, the equal-thickness side plate 101 receives a large impact force, and is likely to crack. In order to improve the strength of the side plate, the reinforcing plate 103 is repair-welded at the connecting area of the equal-thickness side plate 101 and the short-limb lower cross beam 102.

Above-mentioned scheme is through repair welding reinforcing plate 103, when improving back curb plate intensity, also has following a great deal of problem:

(1) the strength of the connecting area of the short-limb lower cross beam 102 and the equal-thickness side plate 101 is too high, most of rear impact force is transferred and applied to the equal-thickness side plate 101 in an impact test, and the upper area of the equal-thickness side plate 101 is easy to destabilize and crack.

(2) The lower area of the backrest is formed by welding a short-limb lower cross beam 102 and a left reinforcing plate and a right reinforcing plate 103, and the welding seams are too many, so that the thermal deformation is large; and the integrity is not strong, and the lateral fatigue test is easy to fail.

(3) The number of parts and the molding die of the reinforcing plate 103 are increased, resulting in an increase in the cost of the parts.

The safety, intellectualization and light weight of the automobile are the future development trend of the automobile industry; as an important safety part in an automobile, an automobile seat should satisfy safety requirements of laws and regulations and realize lightweight seat frames through important approaches such as high-strength steel plates, thinning, replacement of steel with plastic, and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a car seat back skeleton that lightweight and wholeness can be strong, the back curb plate welds with the bottom end rail is direct among this back skeleton mutually, need not to set up the reinforcing plate, still improved the wholeness of back skeleton when satisfying the automobile strength requirement, the connection region's that the back curb plate is connected with the bottom end rail intensity has been weakened, thereby can improve car seat's shock resistance and anti side direction fatigue performance, and also realized few parts, few mould, lightweight function, reduce manufacturing cost.

The utility model discloses a this mesh is realized through following technical scheme: the utility model provides a car seat back skeleton that lightweight and wholeness can be strong, includes entablature, back curb plate and bottom end rail, the entablature welds its characterized in that mutually with the upper portion of back curb plate: the lower part of the backrest side plate is directly welded with the lower cross beam, a reinforcing plate is not required to be arranged, the integrity of the backrest framework is improved while the weight of the backrest framework is reduced, and the strength of a connecting area where the backrest side plate is connected with the lower cross beam is weakened, so that the impact resistance and the lateral fatigue resistance of the automobile seat are improved.

The utility model discloses a reinforcing plate has been got rid of to car seat back skeleton, has improved the wholeness of back skeleton. Meanwhile, the reinforcing plate is removed, so that the strength of a lower connecting area, connected with the lower cross beam, of the backrest side plate in the backrest framework is weakened, when the automobile seat is impacted, the impact force is guided to deform and release under the lower stress, the impact resistance of the automobile seat is good, the backrest side plate is prevented from being broken under large impact force, and the injury to personnel is reduced.

The utility model discloses in, the lower part of back curb plate with the bottom end rail adopt laser welding.

The utility model discloses in, the bottom end rail is the extension roof beam, and the length of bottom end rail is 384mm, and the length of the left and right sides extension is 14 mm.

The utility model discloses in, bottom end rail punching press integrated into one piece, the bottom end rail still has a plurality of technology through-holes.

The utility model discloses in, main part and connection end portion adopt laser welding.

The utility model discloses in, the back curb plate be the unequal thickness board, including the less upper portion region of the great lower part region of the bearing capacity that is located the lower part and is located the bearing capacity on upper portion, the regional welding mutually with the lower part of upper portion, the lower part region adopts the thick steel sheet that thickness is thicker, the regional thin steel sheet that adopts thickness of upper portion.

The utility model discloses a regional thick steel sheet that adopts thickness thick in back curb plate lower part can bear great power for the lower part and the bottom end rail of back curb plate can directly weld mutually, need not the repair welding reinforcing plate and improve the whole back intensity of seat, prevent that the condition of curb plate unstability fracture from taking place. Meanwhile, as the reinforcing plate is omitted, the welding seam is reduced, the integrity of the seat back is improved, and the lateral fatigue failure of the seat back cannot be caused.

The utility model discloses in, upper portion region and lower part region adopt laser welding.

Compared with the prior art, the utility model discloses have as follows and show the effect:

(1) the utility model discloses a back curb plate welds with the bottom end rail is direct mutually in the car seat back skeleton, has got rid of the reinforcing plate, has improved the wholeness of back skeleton. Meanwhile, the reinforcing plate is removed, so that the strength of a lower connecting area, connected with the lower cross beam, of the backrest side plate in the backrest framework is weakened, and the impact resistance and the lateral fatigue resistance of the automobile seat are improved.

(2) The utility model discloses a car seat back skeleton is formed by the laser welding, and the welding heat is little, and it is little to warp, and intensity is high, and the wholeness is good, and side direction fatigue performance is good.

(3) The utility model discloses a car seat back skeleton reduces part quantity, simplifies the production procedure, reduces the input of part mould, welding frock, reduces the manufacturing cost of enterprise.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic view of the overall structure of a prior art vehicle seat back frame;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic view of the overall structure of the backrest frame of the car seat of the present invention;

fig. 4 is an exploded view of fig. 3.

In the figure: 101. equal-thickness side plates 102, short-limb lower cross beams 103, reinforcing plates,

1. an upper cross beam, 2, a backrest side plate, 3 and a lower cross beam.

Detailed Description

As shown in fig. 3 to 4, the lightweight and high-integrity automobile seat backrest framework comprises an upper cross beam 1, a backrest side plate 2 and a lower cross beam 3, wherein the upper cross beam 1 is welded with the upper part of the backrest side plate 2, the lower part of the backrest side plate 2 is directly welded with the lower cross beam 3 in a laser welding mode, a reinforcing plate is not required to be arranged, the integrity of the backrest framework is improved while the weight of the backrest framework is reduced, the strength of a connecting area between the backrest side plate 2 and the lower cross beam 3 is weakened, and therefore the impact resistance and the lateral fatigue resistance of an automobile seat are improved.

In this embodiment, the lower beam 3 is integrally formed by stamping, and the lower beam 3 further has a plurality of process through holes. This lower beam 3 is the extension beam, and the length of lower beam 3 is 384mm, compares current short limb lower beam, and the length of this lower beam 3 left and right sides extension is 14 mm.

In this embodiment, the backrest side plate 2 is a plate with different thicknesses, and includes a lower region located at the lower portion and having a large bearing capacity and an upper region located at the upper portion and having a small bearing capacity, the upper region and the lower region are laser-welded, the lower region is made of a thick steel plate with a relatively thick thickness, and the upper region is made of a thin steel plate with a relatively thin thickness.

The automobile seat backrest framework of the embodiment selectively strengthens and weakens the backrest part structure, and improves the integrity of the seat backrest, so that the impact resistance and the lateral fatigue resistance of the automobile seat are improved.

The above embodiments of the present invention are not right the utility model discloses the limited protection scope, the utility model discloses an embodiment is not limited to this, all kinds of basis according to the above-mentioned of the utility model discloses an under the above-mentioned basic technical thought prerequisite of the utility model, right according to ordinary technical knowledge and the conventional means in this field the modification, replacement or the change of other multiple forms that above-mentioned structure made all should fall within the protection scope of the utility model.

Claims

1. The utility model provides a car seat back skeleton that lightweight and wholeness can be strong, includes entablature (1), back curb plate (2) and bottom end rail (3), entablature (1) welds its characterized in that mutually with the upper portion of back curb plate (2): the lower part of the backrest side plate (2) is directly welded with the lower cross beam (3).

2. The lightweight and high-integrity automobile seat back frame according to claim 1, wherein: the lower part of the backrest side plate (2) and the lower cross beam (3) are welded by laser.

3. The lightweight and high-integrity automobile seat back frame according to claim 1, wherein: the lower beam (3) is an extension beam, the length of the lower beam (3) is 384mm, and the lengths of the extension parts on the left side and the right side are 14 mm.

4. The lightweight and high-integrity automobile seat back frame according to claim 1, wherein: the lower cross beam (3) is integrally formed by punching.

5. The lightweight and high-integrity automobile seat back frame according to claim 1, wherein: the lower cross beam (3) is also provided with a plurality of process through holes.

6. The light-weight and high-performance automobile seat back frame according to any one of claims 1 to 5, characterized in that: the backrest side plate (2) is a plate with different thicknesses and comprises a lower area located at the lower part and having a larger bearing capacity and an upper area located at the upper part and having a smaller bearing capacity, the upper area and the lower area are welded, the lower area is made of a thick steel plate with a thicker thickness, and the upper area is made of a thin steel plate with a thinner thickness.

7. The lightweight and high-integrity automobile seat back frame of claim 6, wherein: the upper region and the lower region are laser welded.