Manual automobile seat waist-supporting mechanism and operating method thereof

Abstract

The invention relates to a manual automobile seat waist-supporting mechanism, which comprises a backrest framework. A transverse rod is arranged on the backrest framework, a bidirectional ratchet mechanism is arranged at one end of the transverse rod, one end of the bidirectional ratchet mechanism is mounted on the transverse rod, and a ratchet rotating disc for adjusting a rotating direction of the bidirectional ratchet mechanism and a coil spring for automatic resetting of the ratchet rotating disc are arranged at the other end of the bidirectional ratchet mechanism. The ratchet rotating disc is provided with a handle which realizes twisting of the bidirectional ratchet mechanism through the ratchet rotating disc. The waist-supporting mechanism is arranged in the middle of the transverserod, and an assistance twisting rod for assistance in transverse rod rotation during waist-supporting mechanism adjustment is arranged at the other end of the transverse rod. The invention further relates to an operating method of the manual automobile seat waist-supporting mechanism. By cooperation of the assistance twisting rod and the bidirectional ratchet mechanism, power assistance is provided when a user adjusts the waist-supporting mechanism, and the handle is capable of automatically resetting through rotation after the waist-supporting mechanism is adjusted to an appropriate position.

Description

technical field [0001] The invention relates to a manual car seat waist pushing mechanism and a working method thereof. technical background [0002] Most of the car seats have a waist structure for supporting the driver's waist. The existing waist structure is divided into two modes: manual adjustment and electric adjustment, and manual adjustment is more common. For the existing manual top waist adjustment mechanism, there are often the following problems: [0003] (1) When a person sits on the seat, it is difficult to turn the adjustment handle, and because most of the adjustment mechanisms use plastic parts, there will be wear and deformation after a certain period of use, resulting in an increase in the gap between the mechanisms, making people turn When adjusting the handle, there will be a section of empty travel, which makes it inconvenient for people to operate; [0004] (2) The existing manual adjustment handle cannot return to its original position after adjustm...

AI Technical Summary

Problems solved by technology

[0003] (1) When a person sits on the seat, it is difficult to turn the adjustment handle, and because most of the adjustment mechanisms use plastic parts, there will be wear and deformation after a certain period of use, resulting in an increase in the gap between the mechanisms, making people turn When adjusting the handle, there will be a section of empty travel, which makes it inconvenient for people to operate;

[0004] (2) The existing manual adjustment handle cannot return to its original position after adjustment. When the adjustment is rotated to a certain angle, it will often protrude from the side of the seat back and become a protrusion. When the car encounters a dangerous situation, the manual adjustment handle will affect The timeliness of seat side airbag blasting poses a safety hazard to the car, and the adjustment handle protruding from the back of the seat also affects the aesthetics of the car interior to a certain extent;

[0005] (3) Most of the popular ejection mechanisms on the market are contraction-deflection ejection, which is limited to a certain extent by the height of the seat back frame. After comparison and investigation, the maximum ejection stroke of the current product is 15 ~35mm, deducting the foam absorption of the seat back, the actual effective stroke is between 7 and 22mm, the effect is not ideal, and due to the influence of the empty stroke, the actual effective stroke is even smaller;

[0006] (4) The APEX point, the maximum ejection point of the waist mechanism, is not clear. The distance between the APEX point and the seat H point in the direction of the torso line must meet a certain range in the seat ergonomics check to ensure comfort. Chair manufacturers usually match the convenience products on the market, which leads to the compatibility problem between the seat platform and the waist-top stools. The APEX points of the waist-top stools on the market are generally high and the comfort is not good.

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