Limb protection air bag in vehicle cab

Abstract

The invention provides a limb protection air bag in a vehicle cab, and belongs to the technical field of vehicles. The limb protection air bag solves problems that an existing air bag cannot protect limb at the same time and impact force is large at the opening moment. The limb protection air bag in a vehicle cab comprises a housing, a cover plate, an air pocket, and a gas generator. The air pocket comprises an upper part which expands upward after inflation, and a lower part which expands downward after inflation. The upper part and the lower part respectively comprises a front sheet which faces the side of a seat after expansion, and a rear sheet connected with the gas generator. Unelastic draw strings are respectively connected between the gas generator and the front sheet of the upper part, and between the gas generator and the front sheet of the lower part. The rear sheets of the upper part and the lower part are respectively provided with a plurality of folds. The openings of the cover plate and the housing are provided with connection structures which make the cover plate move a distance relative to the housing when the air pocket is inflating. A U-shaped large volume air pocket makes the cab has a function of protecting limbs, and arrangement of the draw strings, the cover plate, stay wires, and a spacing belt makes the air bag smoothly unfold, and the air bag is safer when being unfolded.

Description

technical field [0001] The invention belongs to the technical field of automobiles, and relates to a safety airbag, in particular to a limb protection airbag used in a cab. Background technique [0002] As an auxiliary configuration for the passive safety of the vehicle body, the airbag has been paid more and more attention by people. When the car collides with an obstacle, in order to reduce the direct secondary collision between people and objects in the car, a built-in airbag can be quickly opened to fill the air cushion with gas, so that the occupant "flutters on the air cushion" when moving due to inertia, so as to ease the collision. The impact received by the occupant absorbs the collision energy and reduces the degree of injury of the occupant. At present, the airbags used in the car are distributed in the front of the car (the driver's seat), the side (the front row and the rear row) and the roof of the car. However, the existing airbags basically protect the head ...

AI Technical Summary

Problems solved by technology

[0003] However, when a car has a relatively high-intensity frontal collision, the knees, legs, arms, and wrists of the front row personnel will collide with the instrument panel as the collision intensity increases. , wrists and other limbs can be protected, it is necessary to inflate the airbag so that the airbag can extend beyond the body's limbs

The application of large airbags must overcome the problems caused by the impact of the airbag itself, especially in the cab, because there are structures such as steering wheel, accelerator pedal, and brake pedal in the cab, which make it difficult to set up airbags for limbs; The setting of the airbag ignores the protection of the limbs; therefore, the protection of the limbs in the cab has become the current "weak area"

Images