CN110525555B - Safety air bag - Google Patents
Safety air bag Download PDFInfo
- Publication number
- CN110525555B CN110525555B CN201910428369.5A CN201910428369A CN110525555B CN 110525555 B CN110525555 B CN 110525555B CN 201910428369 A CN201910428369 A CN 201910428369A CN 110525555 B CN110525555 B CN 110525555B
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- CN
- China
- Prior art keywords
- airbag
- main body
- gas
- adjusting
- end side
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/0406—Accessories for helmets
- A42B3/0486—Airbags
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/015—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with shock-absorbing means
- A41D13/018—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with shock-absorbing means inflatable automatically
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- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/06—Impact-absorbing shells, e.g. of crash helmets
- A42B3/066—Impact-absorbing shells, e.g. of crash helmets specially adapted for cycling helmets, e.g. for soft shelled helmets
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- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/06—Impact-absorbing shells, e.g. of crash helmets
- A42B3/069—Impact-absorbing shells, e.g. of crash helmets with soft external layer, e.g. for use in impact sports
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
- B60R21/207—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in vehicle seats
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/23—Inflatable members
- B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R2021/003—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks characterised by occupant or pedestian
- B60R2021/0039—Body parts of the occupant or pedestrian affected by the accident
- B60R2021/0048—Head
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
- B60R21/207—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in vehicle seats
- B60R2021/2074—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in vehicle seats in head rests
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J27/00—Safety equipment
- B62J27/20—Airbags specially adapted for motorcycles or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J43/00—Arrangements of batteries
- B62J43/30—Arrangements of batteries for providing power to equipment other than for propulsion
Abstract
The invention provides an airbag which can obtain proper protection performance with a simple structure. An airbag (10) is provided with a bag-shaped airbag main body (12) in which a plurality of gas chambers (19) into which gas is introduced are arranged in parallel. The airbag (10) is provided with an adjusting section (31) that limits the inflated shape of the airbag main body section (12) by bringing the distal end side of the airbag main body section (12) closer to the head section (A) toward the proximal end side.
Description
Technical Field
The present invention relates to an airbag that protects a head of an occupant.
Background
Conventionally, as an airbag device including an airbag that is inflated and deployed by introducing gas, there is disclosed a head protection airbag device that covers and protects the head of a rider of a two-wheeled vehicle such as a bicycle, or that covers and protects the head of a rider sitting on a seat of an automobile. For example, an airbag main body portion used in such an airbag device includes a plurality of elongated air chambers, and these air chambers are arranged in parallel. The airbag main body portion is housed in a folded state, and a portion including both sides of the head portion and extending over the front head portion is covered from the rear head portion by expanding and expanding a gas introduced from the vicinity of the rear head portion.
In the case of this configuration, when the airbag main body portion is inflated by the inflow of the gas introduced from the deployment proximal end side, the protecting portion of the front head portion as the deployment distal end side is drawn by the inflation, and is supposed to float up with respect to the front head portion of the occupant.
Therefore, for example, a structure is disclosed in which the outer bag covers the surface of the inner bag that holds and expands the gas, thereby maintaining the shape (see, for example, patent document 1).
Patent document 1: japanese Kohyo publication No. 2013-540209 (pages 6-10, FIG. 2)
However, it is difficult to reduce the manufacturing cost by the complicated structure of the airbag main body portion as described above.
Disclosure of Invention
The present invention has been made in view of the above circumstances, and an object thereof is to provide an airbag that can obtain appropriate protection performance with a simple structure.
An airbag according to claim 1 that protects a head of a seat occupant by being inflated by an introduced gas, the airbag including: a bag-shaped airbag main body portion in which a plurality of gas chambers into which gas is introduced are arranged in parallel; and an adjusting portion that limits an inflated shape of the airbag main body portion so that a distal end side of the airbag main body portion is directed toward a proximal end side and is brought closer to the head portion.
The airbag according to claim 2 is the airbag according to claim 1, wherein the adjusting portion is formed in a non-inflating portion into which gas is not introduced.
The airbag according to claim 3 is the airbag according to claim 2, wherein the adjusting portion is formed by folding and fixing a part of the non-inflating portion.
The airbag described in claim 4 is the airbag described in any one of claims 1 to 3, and includes: and a reinforcement portion that protects the adjustment portion from a load accompanying the inflation of the airbag main body portion.
The airbag according to claim 5 is the airbag according to claim 4, wherein the adjusting portion and the reinforcing portion are sewn portions each formed by a sewing thread, and the reinforcing portion extends toward a distal end side of the airbag main body portion in a direction intersecting the adjusting portion.
Effects of the invention
According to the airbag of claim 1, the adjustment portion restricts the distal end side of the inflated shape of the bag-shaped airbag main body portion in which the plurality of gas chambers into which the gas is introduced are arranged in parallel to approach the head portion toward the proximal end side, whereby the distal end side of the airbag main body portion can be inflated so as to appropriately cover the region to be protected of the head portion of the occupant, and an appropriate protection performance can be obtained with a simple configuration.
According to the airbag of claim 2, in addition to the effect of the airbag of claim 1, by forming the adjusting portion in the non-inflating portion, the adjusting portion can be easily formed without obstructing the flow of gas in the gas chamber.
According to the airbag of claim 3, in addition to the effect of the airbag of claim 2, the adjusting portion is formed by folding and fixing a part of the non-inflating portion, so that the amount of bringing the distal end side of the airbag main body portion closer to the head portion can be easily adjusted by folding of the non-inflating portion.
According to the airbag of claim 4, in addition to the effect of the airbag of any one of claims 1 to 3, the reinforcing portion protects the adjusting portion from a load accompanying the expansion of the airbag main body portion, thereby reliably preventing the adjusting portion from being broken when the airbag main body portion is expanded, and the adjusting portion can expand the distal end side of the airbag main body portion so as to appropriately cover the region to be protected of the head portion of the occupant.
According to the airbag of claim 5, in addition to the effect of the airbag of claim 4, the reinforcing portion is provided as a sewn portion in which the adjusting portion and the reinforcing portion are formed by the sewing thread, extending toward the distal end side of the airbag main body portion in a direction intersecting the adjusting portion, whereby a load accompanying the inflation of the airbag main body portion can be effectively received by the reinforcing portion, and the breakage of the adjusting portion due to the breakage of the sewing thread caused by the load can be reliably prevented.
Drawings
Fig. 1(a) is a side view showing an inflated and deployed state of an airbag according to embodiment 1 of the present invention, and fig. 1(b) is a side view showing an inflated and deployed state of an airbag according to a comparative example.
Fig. 2 is a plan view showing a state of a base fabric constituting the airbag of embodiment 1.
Fig. 3(a) is a side view showing a part of the airbag according to embodiment 1, and fig. 3(b) is a cross-sectional view of the corresponding position I-I in fig. 3 (a).
Fig. 4(a) to 4(c) are explanatory views showing a manufacturing process of an airbag main body portion of the airbag of embodiment 1, and fig. 4(d) is a sectional view of a portion corresponding to II-II in fig. 4 (c).
Fig. 5(a) is a side view showing a part of an airbag according to embodiment 2 of the present invention, and fig. 5(b) is a sectional view of the corresponding position III-III in fig. 5 (a).
Fig. 6(a) is a side view showing a part of an airbag according to embodiment 3 of the present invention, and fig. 6(b) is a cross-sectional view of the airbag at a position corresponding to IV-IV in fig. 6 (a).
Fig. 7(a) is a side view showing an inflated and deployed state of the airbag according to embodiment 4 of the present invention, and fig. 7(b) is an enlarged side view showing a part of fig. 7 (a).
Fig. 8 is a plan view showing a state of a base fabric constituting an airbag according to embodiment 5 of the present invention.
Fig. 9(a) is a side view showing a part of the airbag according to embodiment 5, and fig. 9(b) is a cross-sectional view of the corresponding position I-I in fig. 9 (a).
Description of the symbols
10-airbag, 12-airbag body portion, 17-non-inflating portion, 19-air chamber, 31-adjusting portion, 35-reinforcing portion, a-head portion.
Detailed Description
Hereinafter, embodiment 1 of the present invention will be described with reference to the drawings.
In fig. 1(a), reference numeral 10 denotes an airbag. An airbag device 11 shown in fig. 2 including this airbag 10 is a head protection airbag device that protects the head a of a passenger of a moving body such as a bicycle. In the present embodiment, the airbag device 11 is, for example, an airbag device for a motorcycle to be worn around the neck of a seat occupant. In the following description, the front-rear direction (the direction of arrow FR and the direction of arrow RR), the left-right direction (the direction of arrow L and the direction of arrow R shown in fig. 1), and the up-down direction (the direction of arrow U and the direction of arrow D) are based on the state in which the occupant wears the airbag device 11.
Since the airbag device 11 may be referred to as an airbag module, the airbag device includes an inflator for supplying gas to the airbag main body 12, a control mechanism for controlling the operation of the inflator, and a battery (secondary battery) as a power source for the inflator, in addition to the airbag 10 having the airbag main body 12 as a bag-like case portion. The airbag device 11 is configured such that, for example, the airbag 10 (airbag main body 12) folded by a predetermined method is housed in a cover made of fabric or the like together with an inflator, a control mechanism, a battery, and the like, and is worn while being wrapped around the neck of the occupant.
The inflator has a main body portion having a disk-like or cylindrical shape. The igniter and the chemical are accommodated inside the main body portion, and the igniter burns the chemical by an electric signal from the control mechanism transmitted through the connected connector, and supplies inflation gas from a gas injection port formed in the main body portion into the airbag main body portion 12 at a high speed.
The control mechanism includes a sensor for detecting an impact or a control device connected to the inflator via a signal line, and the control device activates the inflator when the sensor detects a predetermined impact.
The airbag main body portion 12 is formed in a bag shape as a whole by combining and joining single or plural pieces of base fabric by sewing, bonding, welding, or the like. That is, the airbag main body portion 12 may be formed by tubular knitting with so-called One Piece knitting (OPW) using 1 Piece of base fabric, or may be formed into a bag shape by joining 2 or more pieces of base fabric by sewing or the like. The airbag main body 12 further includes: a gas introduction part 15 for introducing gas from the inflator; an expansion unit 16 that expands by introducing gas from the gas introduction unit 15; and a non-expansion portion 17 into which gas is not introduced. The airbag main body portion 12 is joined by a joining portion 18 formed by sewing or the like, and is formed into a helmet-like three-dimensional shape that covers the head portion around the neck of the occupant in the inflated and expanded state.
The gas introduction portion 15 is formed as an opening portion. The gas introduction portion 15 is a portion that becomes the deployment base end side of the airbag main body portion 12. In the present embodiment, the gas introduction portion 15 is located at the rear portion around the neck of the occupant. The gas introduction portion 15 is configured to be inserted into a part of a body of an inflator, for example.
The expansion portion 16 includes a plurality of air chambers (chambers) 19 that are expanded by the introduction of the gas from the gas introduction portion 15. The gas guide portion 20 that controls the flow of the gas introduced into the gas chamber 19 is formed in the expansion portion 16.
The air chamber 19 is provided with a plurality of 1 st air chambers 22 extending in the left-right direction and a plurality of 2 nd air chambers 23 extending in a radial direction.
Each of the 1 st gas chambers 22 is a gas chamber into which gas is directly introduced from the gas introduction portion 15 via an inflator. Each of the 1 st air cells 22 is formed long in the left-right direction and protrudes in the left-right direction from the gas introduction portion 15. The 1 st air cells 22 are wound so that the distal ends thereof face each other at a position in front of the neck of the occupant, and are positioned around the neck of the occupant, thereby protecting the neck of the occupant in the inflated and expanded state.
The 2 nd air cells 23 are located above the 1 st air cells 22 and are arranged in parallel with each other in the left-right direction. In the present embodiment, the 2 nd air cells 23 are arranged in a left-right symmetrical manner, for example. In the present embodiment, the 2 nd air chamber 23 is formed with 3 on each of the right and left side portions and 1 in the center portion, but the number and shape are not limited. In the state (fig. 2) of the base cloth before being joined by the joining portion 18, for example, each of the 2 nd air cells 23 extends such that the distance between the edges gradually increases from the base end side (lower side) toward the distal end side (upper side), in other words, extends in a finger-like manner. Therefore, in the present embodiment, the 2 nd air cells 23 are formed as the cutouts 25 in the state of the base cloth before being joined by the joining portions 18, and the 2 nd air cells 23 are formed at intervals from each other. In the inflated and expanded state, each of the 2 nd air chambers 23 is located so as to protect the back, both sides, and front of the head a of the occupant.
The gas guide portion 20 can be formed in any shape at any position as long as it can efficiently introduce gas into the gas chamber 19, but in the present embodiment, for example, there are set: a 1 st gas guide part 27 which is close to the gas introduction part 15 and guides the gas upward; a 2 nd gas guide section 28 for further guiding the gas from the 1 st gas guide section 27 to the left and right; and a 3 rd gas guide 29 for guiding the gas further upward from the 1 st gas guide 27 to the left and right. The gas guide 20 is formed by joining base cloths by sewing or the like, for example.
The non-inflatable portion 17 is formed in a blade shape along the outer edge of each air cell 19 of the inflatable portion 16 in a state of the base fabric before being joined by the joining portion 18. The non-inflating portion 17 of the present embodiment is formed as, for example, a joint margin (hem) of the air cells 19 in the base fabric. In the present embodiment, the adjustment portion 31 is formed in the non-expansion portion 17. The adjusting portion 31 limits the inflated shape of the airbag main body portion 12 so that the deployment distal end side (front upper side) of the airbag main body portion 12 is brought closer to the head portion a of the occupant toward the deployment base end side (rear lower side). In the present embodiment, as shown in fig. 3(a) and 3(b), the adjusting portion 31 is formed by fixing by sewing or the like in a state where a part of the non-inflatable portion 17 is pinched and folded. For example, the adjusting portion 31 of the present embodiment is a sewn portion formed by sewing thread. The folded shape of the non-expanding portion 17 for forming the adjusting portion 31 is formed linearly, for example, along the left-right direction of the 1 st air chamber 22 in the present embodiment. The folded position of the non-expanding portion 17 for forming the adjusting portion 31 is a position close to the gas introducing portion 15 on the base end side of the 1 st gas chamber 22. The adjusting portions 31 of the present embodiment are formed at the positions of the non-inflating portions 17 between the 1 st air chamber 22 and the 2 nd air chamber 23, respectively. Therefore, in the inflated and expanded state of the airbag main body portion 12, the adjusting portions 31 are positioned above the 1 st air chambers 22 and are disposed on both sides of the neck portion (jaw portion) of the occupant.
The joint 18 is formed by sewing or the like, for example, to arrange the position of the non-inflating portion 17 on the distal end side of the 2 nd air chamber 23. In the present embodiment, for example, from the state of the base fabric shown in fig. 4(a), in the state of overlapping a part of the 2 nd air cells 23 adjacent to each other and arranged in the left-right direction as shown in fig. 4(b), the joining portion 18 is formed by joining the distal end sides of the 2 nd air cells 23 by sewing or the like as shown in fig. 4 (c). Therefore, as shown in fig. 4(d), the 2 nd air cells 23 adjacent to each other are partially formed by overlapping each other in the left-right direction and the up-down direction by the joint portions 18, and these 2 nd air cells 23 are integrated in a state of being close to each other in the left-right direction. More specifically, the adjacent 2 nd air chambers 23 are arranged in the airbag main body portion 12 so as to overlap in an oblique direction from the top of the head of the occupant to both sides of the head, and the airbag main body portion 12 has a three-dimensional shape. That is, the 2 nd air chamber 23 is disposed so as to overlap with the airbag main body portion 12 so as to narrow at the deployment distal end side. The joining portion 18 may be formed after the formation of the adjusting portion 31, or may be formed before the formation of the adjusting portion 31.
Next, the deployment operation of the airbag device 11 will be described.
As an outline of the operation of the airbag device 11, when a predetermined impact is detected by a sensor at the time of a two-wheel vehicle collision or the like, the control device activates an inflator and injects gas from the inflator. Then, the gas ejected from the inflator flows into the airbag main body 12 from the gas introduction portion 15, and is introduced into the 1 st gas chamber 22 and the 2 nd gas chamber 23 through the gas guide portion 20, and the airbag main body 12 is inflated and expanded from the folded state, whereby the expansion pressure thereof tears a part of the cover body and then protrudes, and covers the head a of the occupant from the rear head over the front head.
At this time, the 2 nd air chamber 23 is expanded while being tilted forward so as to wrap the upper portion and both side portions of the head a of the occupant from the rear side as the introduced gas passes from the base end side to the distal end side. Therefore, the 1 st air chamber 22 of the inflated portion 16 is inflated and expanded around the neck of the occupant, and the 2 nd air chamber 23 is expanded in a substantially circular three-dimensional shape (surrounding the head a from behind) conforming to the shape of the head a. That is, the inflation portion 16 is developed in a pocket shape (semi-dome shape) with the occupant facing portion facing the head a of the occupant as an inner side. At this time, the adjusting portion 31 restricts the deployment distal end side of the inflated shape of the airbag main body portion 12 so as to approach the head portion a toward the deployment proximal end side, whereby the deployment distal end side of the airbag main body portion 12 can be inflated and deployed so as to appropriately cover the front portion of the head portion a of the occupant, that is, the front head portion (forehead portion), which is the region to be protected by the head portion a of the occupant. Specifically, as shown in fig. 1(a), the adjusting portion 31 functions to bring the portion P on the front end side, which is the distal end side in the inflated and expanded state of the airbag main body portion 12, closer to the position of the front head portion of the occupant, and the portion P on the front end side of the airbag main body portion 12 is inclined so as to cover the front head portion of the occupant from above, as compared with the airbag main body portion 12a of the comparative example airbag 10a shown in fig. 1(b) which does not include the adjusting portion 31. That is, even when the airbag 10a formed of a planar base fabric is joined to a solid shape, it is difficult to make the front head portion covering the head a of the occupant three-dimensional, and in the present embodiment, the inclination in the deployed state of the airbag main body portion 12 can be easily changed only by the adjusting portion 31 without complicated joining or the like, and the airbag 10 can be deployed so as to cover the front head portion of the occupant. As a result, the airbag 10 can obtain appropriate protection performance with a simple configuration, as compared with a case where the shape and sewing of the base fabric are complicated, or the capacity of the airbag main body portion 12 is increased in consideration of the floating amount from the region to be protected, for example.
Further, by forming the adjusting portion 31 in the non-inflating portion 17, the adjusting portion 31 can be easily formed without obstructing the flow of the gas in the gas chamber 19.
Further, the adjusting portion 31 is formed by folding and fixing a part of the non-inflating portion 17, whereby the amount of bringing the deployment distal end side of the airbag main body portion 12 close to the head portion a can be easily adjusted by the folding of the non-inflating portion 17.
For example, the adjustment portion 31 may be formed by folding and fixing the non-expanding portion 17 in an inclined state as in embodiment 2 shown in fig. 5(a) and 5(b), or may be formed by folding and fixing the non-expanding portion 17 in 2 folds or more as in embodiment 3 shown in fig. 6(a) and 6 (b). By thus adjusting the folded position or the folded amount of the non-inflating portion 17, the angle or the position of the deployment distal end side of the airbag main body portion 12 can be appropriately adjusted. That is, the adjusting portion 31 can be arbitrarily folded to form the non-inflating portion 17 according to the desired shape of the airbag main body portion 12 in the inflated and deployed state.
Next, embodiment 4 will be described with reference to fig. 7. The same components and functions as those of the above embodiments are denoted by the same reference numerals, and description thereof is omitted.
The airbag 10 of the present embodiment includes the reinforcement portion 35 that protects the adjustment portion 31 from the load accompanying the inflation of the airbag main body portion 12.
As shown in fig. 7(a), the reinforcing portion 35 is a sewn portion formed by sewing thread in the same manner as the adjusting portion 31, and the reinforcing portion 35 of the present embodiment is an extended sewn portion formed by extending the sewing thread constituting the adjusting portion 31. That is, the reinforcing portion 35 and the adjusting portion 31 are formed of the same sewing thread. In the present embodiment, the reinforcing portion 35 is disposed in the non-inflatable portion 17. The reinforcing portion 35 is formed to extend, for example, to a portion of the non-expanding portion 17 where the adjusting portion 31 is formed. The reinforcing portion 35 may be formed in a portion of the non-expanding portion 17 where the adjusting portion 31 is located, which is pinched and folded, or may extend toward a portion of the non-expanding portion 17 which is pinched and folded. When the reinforcing portion 35 is formed in the portion of the non-expanding portion 17 that is pinched and folded, for example, as shown in fig. 7(b), the reinforcing portion 35 may be formed along a curved portion 36 formed so as to curve a portion of the non-expanding portion 17 with respect to the portion where the adjusting portion 31 is located. The reinforcing portion 35 is connected to the adjusting portion 31, and is formed to be inclined in a direction intersecting the adjusting portion 31. The reinforcement portion 35 extends from the end of the adjustment portion 31 toward the front upper side, which is the distal end side of the airbag main body portion 12.
In the airbag main body portion 12, a load that attempts to return to the original shape in relation to the regulation of the regulating portion 31 is generated in the direction intersecting the regulating portion 31, i.e., in the rear upper side (the direction of the arrow F) in the present embodiment, and the load can be received by the reinforcing portion 35 extending in the direction intersecting or orthogonal to the load, so the non-inflating portion 17 that is pinched and folded and fixed by the regulating portion 31 can improve the load resistance, and the sewing line of the regulating portion 31 can be prevented from being broken by the load.
When the gas injected from the inflator flows into the airbag main body 12 from the gas introduction portion 15 and is introduced into the 1 st gas chamber 22 and the 2 nd gas chamber 23 through the gas guide portion 20, respectively, and the airbag main body 12 is inflated and expanded from the folded state, the 2 nd gas chamber 23 is tilted forward so as to wrap the upper portion and both side portions of the head a of the occupant from the rear side along with the introduced gas from the proximal end side to the distal end side. Therefore, at the initial stage of deployment, the load accompanying the inflation of the airbag main body portion 12 is generated in the direction of the upper rear side, i.e., the direction intersecting the adjusting portion 31, in other words, in the direction of the sewing line that cuts the adjusting portion 31. That is, the load is generated in the same direction as the load in which the non-inflating portion 17 of the airbag main body portion 12 tries to return to the original shape with respect to the regulation of the regulating portion 31. The reinforcing portion 35 is formed to extend in a direction intersecting the adjusting portion 31, whereby the load is effectively received by the entire reinforcing portion 35, and the load is prevented from concentrating only on the front end portion of the adjusting portion 31. As described above, the reinforcing portion 35 protects the adjusting portion 31 from the load accompanying the inflation of the airbag main body portion 12, so that the load resistance can be improved, and the adjusting portion 31 can be reliably prevented from being broken when the airbag main body portion 12 inflates. That is, the sewing line of the adjusting portion 31 can be reliably prevented from being broken by the load. Therefore, the distal end side of the airbag main body portion 12 can be inflated so as to appropriately cover the region to be protected of the head of the occupant by the adjusting portion 31.
Further, since the non-inflatable portion 17 is folded by the adjusting portion 31, the extending direction and the intersecting direction of the adjusting portion 31 are narrow in the present embodiment with respect to the vertical direction, and the reinforcing portion 35 is formed only by the length amount necessary when receiving a load in connection with the end portion of the adjusting portion 31 linearly extending at the folded portion, whereby the adjusting portion 31 and the reinforcing portion 35 can be efficiently arranged with respect to the narrow non-inflatable portion 17 as compared with the case where the entire sewn portion is inclined.
Further, since the reinforcing portion 35 is formed continuously to the adjusting portion 31 by the sewing line constituting the adjusting portion 31, it can be formed by the sewing portion when the adjusting portion 31 is formed, and thus the manufacturing is easy and the cost is low, and the load resistance is easily improved.
As in embodiment 5 shown in fig. 8, 9(a) and 9(b), the adjusting portion 31 may be formed by overlapping the peripheral edge portions of the U-shaped non-expanding portion 17 partially cut and fixing them by sewing or the like. Thus, as in the case shown in fig. 1(a), the adjusting portion 31 limits the inflated shape of the airbag main body portion 12 so that the deployment distal end side (front upper side) of the airbag main body portion 12 approaches the head a of the occupant toward the deployment proximal end side (rear lower side).
This makes it possible to easily manufacture the airbag main body 12. In addition, when the reinforcing portion 35 as an extension of the sewn portion as described with reference to fig. 7(b) is formed, the reinforcing portion 35 can be easily set.
In each of the above embodiments, the adjusting portion 31 or the reinforcing portion 35 is not limited to being formed in the non-inflatable portion 17, and the non-inflatable portion 17 constituting a part of the base fabric of the inflatable portion 16 (the air chamber 19) may be formed by, for example, folding and joining.
The adjusting portion 31 or the reinforcing portion 35 may be formed by a shape regulating mechanism such as a tether or a strap, for example, in addition to being formed in the airbag main body portion 12 itself.
The airbag device 11 can also be used as an airbag device such as a headrest disposed behind the head a of an occupant seated on a seat of an automobile, for example.
Industrial applicability
The present invention is preferably used, for example, as a head protection airbag device for a motorcycle.
Claims (3)
1. An airbag that protects a head of a seat occupant by being inflated with an introduced gas, the airbag characterized by comprising:
a bag-shaped airbag main body portion in which a plurality of gas chambers into which gas is introduced are arranged in parallel; and
an adjusting portion that is provided between the other air cells and the air cell that protects the neck portion of the occupant during inflation, and that limits the inflated shape of the airbag main body portion so that the distal end side of the airbag main body portion is directed toward the base end side and is closer to the head portion,
the adjusting part is formed on a non-expansion part into which gas is not introduced,
the adjusting portion is formed by folding and fixing a part of the non-inflating portion, and the adjusting portion brings the distal end side of the airbag main body portion toward the base end side and approaches the head portion.
2. The airbag according to claim 1, characterized by comprising:
and a reinforcement portion that protects the adjustment portion from a load accompanying the inflation of the airbag main body portion.
3. The airbag of claim 2,
the adjusting part and the reinforcing part are sewing parts formed by sewing threads respectively,
the reinforcing portion extends toward a distal end side of the airbag main body portion in a direction intersecting the adjusting portion.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018100831 | 2018-05-25 | ||
| JP2018-100831 | 2018-05-25 | ||
| JP2019069071A JP7223620B2 (en) | 2018-05-25 | 2019-03-29 | Airbag |
| JP2019-069071 | 2019-03-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110525555A CN110525555A (en) | 2019-12-03 |
| CN110525555B true CN110525555B (en) | 2021-10-29 |
Family
ID=68499610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910428369.5A Active CN110525555B (en) | 2018-05-25 | 2019-05-22 | Safety air bag |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN110525555B (en) |
| DE (1) | DE102019114015A1 (en) |
| SE (1) | SE544258C2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021129767A1 (en) * | 2021-11-15 | 2023-05-17 | Autoliv Development Ab | Portable protection device |
| WO2023110215A1 (en) * | 2021-12-16 | 2023-06-22 | Autoliv Development Ab | Helmet comprising a basic body, an inflator and an airbag |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3854944B2 (en) * | 2003-05-26 | 2006-12-06 | ファミリー株式会社 | Chair type massage machine |
| JP4822693B2 (en) * | 2004-11-16 | 2011-11-24 | タカタ株式会社 | Airbag device |
| SE529288C2 (en) * | 2005-10-26 | 2007-06-19 | Terese Alstin | Bicycle helmet |
| JP5908911B2 (en) * | 2010-09-29 | 2016-04-26 | ヘーヴディング スヴェリーエ アーベー | Airbag suitable for head protection |
| CA2736654C (en) * | 2011-04-07 | 2014-03-25 | Iwi Ltd. | Inflatable cervical traction device |
| DE202014003584U1 (en) * | 2014-04-30 | 2015-07-31 | Trw Automotive Gmbh | Inflatable airbag to protect a person, airbag module, vehicle parts and vehicle occupant restraint system with such a gas bag |
| JP6428929B2 (en) * | 2015-04-28 | 2018-11-28 | トヨタ自動車株式会社 | Crew protection device |
| CN105686191A (en) * | 2016-04-19 | 2016-06-22 | 佛山市南海区九江佳德士头盔有限公司 | Adjustment air bag used for helmet |
| US10173629B2 (en) * | 2017-01-24 | 2019-01-08 | Ford Global Technologies, Llc | Collar shaped airbag |
-
2019
- 2019-05-22 CN CN201910428369.5A patent/CN110525555B/en active Active
- 2019-05-24 SE SE1950614A patent/SE544258C2/en unknown
- 2019-05-24 DE DE102019114015.3A patent/DE102019114015A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| SE544258C2 (en) | 2022-03-15 |
| DE102019114015A1 (en) | 2019-11-28 |
| SE1950614A1 (en) | 2019-11-26 |
| CN110525555A (en) | 2019-12-03 |
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