CN103569024A

CN103569024A - Side airbag structure of automobile seat

Info

Publication number: CN103569024A
Application number: CN201310502088.2A
Authority: CN
Inventors: 张男
Original assignee: JINHENG MOTOR SAFETY SYSTEM CO Ltd JINZHOU
Current assignee: JINHENG MOTOR SAFETY SYSTEM CO Ltd JINZHOU
Priority date: 2013-10-23
Filing date: 2013-10-23
Publication date: 2014-02-12

Abstract

The invention discloses a side airbag structure of an automobile seat. The side airbag structure of the automobile seat comprises an airbag and a gas generator installed on the airbag, and is characterized in that the airbag consists of an outer bag piece and an inner bag piece, wherein the outer bag piece and the inner bag piece are sewn together through a sewing thread, and form an upper inflatable chamber and a lower inflatable chamber; the upper part of the airbag is a chest air chamber; the lower part of the airbag is a pelvis air chamber; the outer bag piece and the inner bag piece form a unidirectional air guiding duct; the air guiding duct is positioned behind the inner bag piece, and is distributed along the unfolded direction of the inner bag piece; an air outlet is formed in the chest air chamber; the outer bag piece is folded in half along a symmetric axis and then is sewn along the periphery of the outer bag piece. The side airbag structure of the automobile seat has the benefits as follows: the side airbag structure of the automobile seat is simple in structure and low in cost; the side airbag structure of the automobile seat has a reasonable inner air guiding structure so as to ensure that air enters the pelvis air chamber first and then flows into the chest air chamber, thereby effectively ensuring the pressure of the pelvis air chamber, reducing pressure of an interior decoration of a vehicle body on the airbag and avoiding the airbag from being broken down to result in failure of passenger protection; the problems exist in the prior art can be effectively solved; the side airbag structure of the automobile seat greatly reduces the damage to the chest and the pelvis of a passenger.

Description

Automobile seat side airbag structure

Technical field

The present invention relates to a kind of safety air bag, especially relate to the automobile seat side airbag structure of a kind of occupant's of protection chest, pelvis.

Background technology

Along with the attention of people to safety, most automobile is all furnished with seat side air bag.Existing seat side air bag is generally the protection of chest abdomen; and constantly perfect due to new legislation new standard in recent years; to seat side air bag, require more and more higher; not only be embodied in and reduce in injury values; the protection domain of offside air bag is also had higher requirement, and has produced thus in order to protect the breastbone basin side air bag of occupant's chest, abdomen, hip.

Existing breastbone basin side air bag is generally double cavity structure, because inside does not have rational air guide design, can cause airbag inflation to flow undesirable, cannot guarantee internal pressure, protection effect reduces greatly, its major cause is: because person structure hip (pelvis) is nearer apart from vehicle body than chest belly, when vehicle generation side collision, side airbag deployment, first the vehicle body of invading is located airbag with hip (pelvis) and is contacted, and can push rapidly airbag, gas in airbag can leak out airbag sooner, especially the positional distance vehicle body of hip is nearer, squeese pressure is larger, airbag is more easily out of shape, cause passenger protection effect to reduce.

Summary of the invention

Technical matters to be solved by this invention has been to provide a kind of automobile seat side airbag structure that can effectively protect occupant's chest, pelvis when automobile generation side collision.

The present invention is achieved in that

A kind of automobile seat side airbag structure, comprise airbag, be arranged on the gas generator on airbag, its special character is: airbag consists of outer bag sheet and inner layer bag sheet, outer bag sheet and inner layer bag sheet are sewn together and form upper and lower two plenum chambers by sewing thread, airbag top is chest air chamber, airbag bottom is pelvis air chamber, outer bag sheet and inner layer bag sheet form unidirectional air flue, described airtube is positioned at after inner layer bag sheet and along inner layer bag sheet expansion direction and distributes, at chest air chamber, place is provided with air extractor duct, outer bag sheet is after axis of symmetry doubling and along its periphery sewing.

Described inner layer bag sheet is triangle.

Described automobile seat side airbag structure, be arranged on back of seat sidepiece, when vehicle generation side collision, the producer igniting that is arranged on airbag inside produces gas and pours in airbag, because having unidirectional air flue, airbag inside exists, part gas is inflated forward, and another part airbag is inflated downwards.The gas of inflation is for airbag breaks through seat foaming and covering, so that airbag normally launches forward.When the gas of inflation runs into inner layer bag sheet front portion forward, changing direction inflates downwards; first gas be filled with pelvis air chamber; then flow to again chest air chamber; and guarantee that pelvis chamber is in high pressure conditions always; greatly reduce the airbag distortion causing due to extruding that occupant's health and vehicle body interior trim closely cause, effectively raised occupant's pelvis protection effect.

The invention has the beneficial effects as follows: simple in structure; cost is low; inner gas-guiding structure is reasonable; guarantee that first gas enter pelvis air chamber, then flow into chest air chamber, can effectively guarantee pelvis air chamber pressure like this; reduce the extruding of vehicle body interior trim to airbag; avoid the breakdown passenger protection that causes of airbag to lose efficacy, can effectively solve the problem that prior art exists, greatly reduce the injury values of occupant's breastbone basin.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention;

Fig. 2 is outer bag sheet and inner layer bag sheet sewing schematic diagram;

Fig. 3 is airbag periphery sewing schematic diagram:

Fig. 4 is cutaway view after airbag detonates.

In figure: airbag 1, gas generator 2, sewing thread 3, producer mounting hole 4, airtube 5, air extractor duct 6, sewing thread 7, outer bag sheet 1a, inner layer bag sheet 1b, chest air chamber 101, pelvis air chamber 102.

The specific embodiment

Below by embodiment, and the present invention will be further described by reference to the accompanying drawings.

As shown in Figure 1 and Figure 2, this automobile seat side airbag structure, comprises airbag 1 and is arranged on the gas generator 2 in airbag 1.Airbag 1 is by consisting of sewing thread 3 outer bag sheet 1a sewn together and triangle inner layer bag sheet 1b, inner layer bag sheet 1b is positioned at above outer bag sheet 1a, outer bag sheet 1a is provided with producer mounting hole 4, outer bag sheet 1a and inner layer bag sheet 1b form upper and lower two plenum chambers, airbag 1 top is that chest air chamber 101, bottom are pelvis air chamber 102, after outer bag sheet 1a and inner layer bag sheet 1b sewing, form unidirectional air flue 5, described airtube 5 is positioned at after inner layer bag sheet 1b and along inner layer bag sheet 1b expansion direction and distributes, and at chest air chamber, 101 places set out gas port 6.

As shown in Figure 3, outer bag sheet 1a sews along completing periphery by sewing thread 7 after axis of symmetry doubling.

When having gas to be filled with airtube 5, airtube 5 expands and forms Pyramid, as shown in Figure 4.Unidirectional air flue can guarantee that gas first flows into pelvis air chamber 102, then flows into chest air chamber 101, guarantees that pelvis air chamber 102 is for a long time in high pressure conditions, more favourable protection occupant pelvis.

Claims

1. an automobile seat side airbag structure, comprise airbag, be arranged on the gas generator on airbag, it is characterized in that: described airbag consists of outer bag sheet and inner layer bag sheet, outer bag sheet and inner layer bag sheet are sewn together and form upper and lower two plenum chambers by sewing thread, airbag top is chest air chamber, airbag bottom is pelvis air chamber, outer bag sheet and inner layer bag sheet form unidirectional air flue, described airtube is positioned at after inner layer bag sheet and along inner layer bag sheet expansion direction and distributes, at chest air chamber, place is provided with air extractor duct, outer bag sheet is after axis of symmetry doubling and along its periphery sewing.

2. automobile seat side airbag structure according to claim 1, is characterized in that: described inner layer bag sheet is triangle.