Automobile seat cushion framework with descending prevention function

Abstract

The invention discloses an automobile seat cushion framework with a descending prevention function. The automobile seat cushion framework comprises two side plates, a pair of front connecting rods and a pair of rear connecting rods, wherein the front and rear parts of each side plate are articulated with an upper sliding rail by virtue of one front connecting rod and one rear connecting rod; a descending prevention rod is connected between the two side plates; the outer side edge of each front connecting rod is provided with a flange which is protruded outwards; when the automobile seat cushion framework descends to the bottommost position, the descending prevention rod is withstood by the flanges; when the whole automobile seat cushion framework is collided, the front connecting rods can not rotate around the articulation points of the front connecting rods and the upper sliding rail, and a fixed frame body is formed between the side plates, the front and rear connecting rods and a lower sliding rail. Compared with the prior art, the automobile seat cushion framework has the advantages of being capable of reducing the excessive descending amount caused by clearances between the descending prevention rod and the front connecting rods and the deformation of the side plates, effectively catering to the stress direction of the descending prevention rod, and providing stable support so as to improve the safety performance of a seat.

Description

technical field [0001] The invention relates to the technical field of automobile seats, in particular to an automobile seat cushion frame with an anti-submersion function. Background technique [0002] When the car encounters a forward collision, it is necessary for the seat to support the impact of the passengers and ensure the correct sitting posture of the passengers, so that the passive safety system of the car can play its due role, so as to ensure the safety of the passengers to the greatest extent. Therefore, the anti-submersion function of car seats has always been one of the important indicators to measure the safety performance of car seats. [0003] The current car seats on the market only consider the position and strength of the anti-submersion pipe, and do not consider the sinking of the four-link seat with a high-profile function. [0004] see Figure 1 to Figure 3 As shown in the force analysis diagram of the car seat currently on the market, since the rear...

AI Technical Summary

Problems solved by technology

see figure 2 , taking the side plate L2 and the rear connecting rod L3 as the analysis objects, under the action of the force F1 and F2, the side plate L2 is subjected to a pressure, because the length of the side plate L2 is long, and it is generally made of thin steel plate, so it is easy to cause deformation

see image 3 , when the side plate L2 is deformed, the four-link system of the seat cushion cannot be effectively locked, and the front link L1 will continue to rotate downward, resulting in an additional dive displacement H, resulting in a safety accident

Images