CN218805689U - Safety air bag - Google Patents

Abstract

The utility model relates to the technical field of airbags, in particular to an airbag, which comprises an airbag small main piece, an airbag large main piece, a drawstring and a flow guiding heat insulation piece, wherein the airbag large main piece and the airbag small main piece are sewn and connected to form a bag shape of the airbag; the diversion heat insulation sheet is arranged at the middle position inside the air bag big main sheet; the stretching strap includes first canned paragraph, second canned paragraph and spacing section, and first canned paragraph sets up in the inside one side of the big main part of air pocket, and the second canned paragraph sets up the opposite side at the big main part of air pocket, and spacing section setting is between first canned paragraph and second canned paragraph, and the length of spacing section is less than the inside width of the big main part of air pocket. This air bag passes through the design of stretching strap for when the gasbag was expanded, the limit of gasbag furthest extension length is in biggest package type boundary, has avoided hitting the facial risk of passenger.

Description

Safety air bag

Technical Field

The utility model relates to an gasbag technical field especially relates to an air bag.

Background

The safety airbag system is an auxiliary protection system on an automobile, and the working principle of the safety airbag system is that after a sensor detects a relevant collision signal, a control unit judges whether to ignite an airbag, after the ignition signal is received, a gas generator instantly generates a large amount of gas to inflate the airbag, and the airbag forms a cushion pad to protect a passenger from colliding hard parts in the automobile to cause injury.

Patent with application number CN202011190138.4 discloses a novel car copilot air bag structure, includes: the guide plate is arranged in the automobile ceiling and positioned above the passenger seat, extends along the length direction of the automobile ceiling and forms an air bag expansion guide channel with the automobile roof; the air bag is folded and arranged between the automobile roof and is positioned in the air bag expansion guide channel; and a gas generator mounted between the roof of the vehicle and the roof of the vehicle for inflating the gas bag. When collision happens, the gas generator is triggered to inflate and expand the gas bag, the gas bag expands forwards along the gas bag expansion guide channel, the front part of the gas bag is in contact with the front windshield, the bottom part of the gas bag is in contact with the instrument desk, and the rear part of the gas bag is in contact with the neck, neck and chest positions of a passenger. The airbag is prone to situations where the distal most end of the airbag impacts the face of the member, potentially causing significant injury.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides an airbag to solve the problem that the most distant end of the airbag is likely to impact the face of a member, which may cause a potential great injury.

Based on the above purposes, the utility model provides an airbag, which comprises a small airbag main piece, a large airbag main piece, a drawstring and a flow guiding heat insulation piece, wherein,

the air bag big main piece and the air bag small main piece are connected in a sewing mode to form a bag shape of the air bag;

the flow guiding heat insulation sheet is arranged at the middle position inside the air bag big main sheet;

the stretching strap includes first canned paragraph, second canned paragraph and spacing section, first canned paragraph sets up the inside one side of the big main part of air pocket, the second canned paragraph sets up the opposite side of the big main part of air pocket, spacing section sets up first canned paragraph with between the second canned paragraph, the length of spacing section is less than the inside width of the big main part of air pocket.

Optionally, two sides of the first fixing section are provided with a pull belt reinforcing sheet, and the first fixing section and the two pull belt reinforcing sheets are sewn inside the air bag main sheet through a common sewing thread.

Optionally, a heat insulation reinforcing sheet is arranged between the flow guide heat insulation sheet and the second fixing section.

Optionally, the flow-guiding heat-insulating sheet, the second fixing section and the heat-insulating reinforcing sheet are sewn inside the air bag main sheet through a common sewing thread.

Optionally, an outer wrapping sheet is sewn outside the air bag main body sheet, and the outer wrapping sheet is used for wrapping and preventing loosening after the air bag main body sheet is folded and before the air bag main body sheet is placed into an assembly box.

This gasbag receives the ignition instruction, and gas generator produces a large amount of gases in the twinkling of an eye, inflates little main part of air pocket and the big main part of air pocket, and gas generator gas outlet temperature is higher, need carry out the drainage to it is thermal-insulated, realize drainage and thermal-insulated function through the water conservancy diversion heat-insulating sheet, at the inflation in-process, limiting displacement through the stretching strap for package type extension length restriction when the gasbag expandes has avoided hitting the risk of hitting the passenger face within the biggest package type boundary.

Therefore, the airbag is designed through the drawstring, so that the extending length of the farthest end of the airbag is limited within the maximum bag-shaped boundary when the airbag is unfolded, and the risk of hitting the face of a passenger is avoided.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only the present invention, and those skilled in the art can obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an airbag according to an embodiment of the present invention.

Labeled as:

1. an air bag small main piece; 2. an air bag main panel; 3. a flow guiding heat insulation sheet; 4. a first fixed section; 5. a second fixed section; 6. a limiting section; 7. a drawstring reinforcement sheet; 8. a heat insulating reinforcing sheet; 9. and (5) coating the tablets.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the following embodiments.

It should be noted that unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by those having ordinary skill in the art to which the present invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

As shown in fig. 1, the airbag comprises a small airbag main sheet 1, and is characterized by further comprising a large airbag main sheet 2, a drawstring and a flow-guiding heat-insulating sheet 3, wherein,

the air bag big main sheet 2 and the air bag small main sheet 1 are sewn and connected to form a bag shape of the air bag;

the diversion heat insulation sheet 3 is arranged at the middle position inside the air bag big main sheet 2;

the stretching strap includes first canned paragraph 4, second canned paragraph 5 and spacing section 6, and first canned paragraph 4 sets up in the inside one side of air pocket main part 2, and second canned paragraph 5 sets up the opposite side at air pocket main part 2, and spacing section 6 sets up between first canned paragraph 4 and second canned paragraph 5, and spacing section 6's length is less than the inside width of air pocket main part 2.

This gasbag receives the instruction of igniteing, and gas generator produces a large amount of gases in the twinkling of an eye, aerifys little main part 1 of air pocket and big main part 2 of air pocket, and gas generator gas outlet temperature is higher, need carry out the drainage, and it is thermal-insulated to carry out, realizes drainage and thermal-insulated function through water conservancy diversion heat-insulating sheet 3, aerifys the in-process, limiting displacement through the stretching strap for package type extension length restriction when the gasbag expandes is within the biggest package type boundary, has avoided hitting the risk of hitting the passenger face.

Therefore, the airbag is designed through the drawstring, so that the extending length of the farthest end of the airbag is limited within the maximum bag-shaped boundary when the airbag is unfolded, and the risk of hitting the face of a passenger is avoided.

In some embodiments, the first fixing section 4 is provided with a pull tape reinforcing sheet 7 at both sides thereof, and the first fixing section 4 and the two pull tape reinforcing sheets 7 are sewn inside the air bag main panel 2 by a common sewing thread.

The design of the drawstring reinforcing sheet 7 can avoid the damage and air leakage of the air bag main sheet 2 caused by insufficient tearing strength, which leads to the weakening of the protection effect of the air bag.

In some embodiments, a heat insulation reinforcing sheet 8 is arranged between the flow guide and heat insulation sheet 3 and the second fixing section 5. The heat insulation reinforcing sheet 8 can further improve the heat insulation effect, and meanwhile, the design of the position of the second fixing section 5 can also realize a part of heat insulation function.

In some embodiments, the guide insulation sheet 3, the second fixing section 5 and the insulation reinforcing sheet 8 are sewn inside the air bag main panel 2 by a common sewing thread. Thus, the firmness of the whole structure can be improved.

In some embodiments, the exterior of the air bag main panel 2 is sewn with an outer covering sheet 9, and the outer covering sheet 9 is used for preventing the air bag main panel 2 from being loosened after being folded and before being put into an assembly box.

Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also technical features in the above embodiments or in different embodiments can be combined, steps can be implemented in any order, and there are many other variations of the different aspects of the invention as above, which are not provided in detail for the sake of brevity.

The present invention is intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (5)

1. An air bag comprises a small air bag main sheet, and is characterized by also comprising a large air bag main sheet, a drawstring and a diversion heat insulation sheet, wherein,

the air bag big main piece and the air bag small main piece are connected in a sewing mode to form a bag shape of the air bag;

the flow-guiding heat-insulating sheet is arranged at the middle position inside the air bag main sheet;

the draw strap includes first canned paragraph, second canned paragraph and spacing section, first canned paragraph sets up one side of air pocket big head piece inside, the second canned paragraph sets up the opposite side of air pocket big head piece, spacing section sets up first canned paragraph with between the second canned paragraph, the length of spacing section is less than the inside width of air pocket big head piece.

2. The airbag of claim 1, wherein the first fixing section is provided with a drawstring reinforcement sheet at both sides thereof, and the first fixing section and the two drawstring reinforcement sheets are sewn inside the airbag main panel by a common sewing thread.

3. An air bag according to claim 1 wherein a thermal insulation reinforcing sheet is provided between the deflector and the second fixed section.

4. An airbag in accordance with claim 3, wherein said flow guiding heat insulating sheet, said second fixing section and said heat insulating reinforcing sheet are sewn to the inside of said bag main panel by a common sewing thread.

5. The airbag of claim 1, wherein an outer covering sheet is sewn to the outer portion of the main bag body, and the outer covering sheet is used for preventing the main bag body from being loosened after being folded and before being placed in the assembly box.

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