阅读说明：本技术 侧面安全气囊装置 (Side airbag device ) 是由 夫马真 小林优斗 于 2018-05-08 设计创作，主要内容包括：本发明提供一种能够有效地抑制气囊垫的摇动,提高约束性能的侧面安全气囊装置。侧面安全气囊装置(100)具备：后腔(116),其在上下方向上呈长尺状；前腔(118),其向后腔(116)的前方及上方膨胀展开；充气器(108),其内置于在后腔(116)的后部；第一系绳(112),其为布状且设置于后腔(116)的外侧,前端(122)连接到后腔(116)的前缘部分(124),后端(126)连接到后腔(116)的后部,并且当后腔(116)膨胀展开时张紧。后腔(116)的容量比前腔(118)的容量小,第一系绳(112)的上下方向比前后方向长,并且第一系绳(112)的前端(122)连接到后腔(116)的前缘部分(124)的至少包括下端(146)的范围上。(The invention provides a side airbag device which can effectively restrain the swing of an airbag cushion and improve the restraint performance. A side airbag device (100) is provided with: a rear cavity (116) which is long in the vertical direction; a front chamber (118) which is expanded and deployed forward and upward of the rear chamber (116); an inflator (108) disposed internally rearward of the rear chamber (116); a first tether (112) that is cloth-like and disposed outside of the rear cavity (116), has a front end (122) connected to a front edge portion (124) of the rear cavity (116), and a rear end (126) connected to a rear portion of the rear cavity (116) and is tensioned when the rear cavity (116) is inflated and deployed. The rear chamber (116) has a smaller capacity than the front chamber (118), the first tether (112) has a longer up-down direction than a front-rear direction, and a front end (122) of the first tether (112) is connected to a range of a front edge portion (124) of the rear chamber (116) including at least a lower end (146).)

1. A side airbag device is characterized by comprising:

a rear chamber that is inflated and deployed from a side portion of the vehicle seat and has a long-sized shape in the vertical direction;

a front chamber connected to a front edge portion of the rear chamber and expanded forward and upward of the rear chamber;

the inflator is arranged at the rear part of the rear cavity and is long in the vertical direction;

a first tether which is cloth-shaped and disposed outside the rear chamber, has a front end connected to a front edge portion of the rear chamber and a rear end connected to a rear portion of the rear chamber, and is tensioned when the rear chamber is expanded and deployed,

the rear chamber has a smaller volume than the front chamber,

the first tether has a longer vertical direction than a front-rear direction, and a front end thereof is connected to a range including at least a lower end of a front edge portion of the rear chamber.

2. The side airbag apparatus according to claim 1,

the side airbag device is further provided with a second tether which is cloth-like and disposed outside the front chamber and the rear chamber, has a front end connected to a front edge portion of the front chamber, has a rear end connected to a rear portion of the rear chamber, and is tensioned when the front chamber and the rear chamber are inflated and deployed.

3. The side airbag apparatus according to claim 2,

the second tether is longer in the front-rear direction than in the up-down direction.

4. The side airbag apparatus according to claim 2 or 3,

the front end of the second tether is connected to the front edge portion of the front chamber over a range longer than a range in which the rear end of the second tether is connected to the rear portion of the rear chamber.

5. The side airbag apparatus according to any one of claims 2 to 4,

the length of the second tether from the front end to the rear end is shorter than the length of a path from a front edge portion of the front chamber to a rear portion of the rear chamber when the front chamber and the rear chamber are expanded without bending.

6. The side airbag apparatus according to any one of claims 1 to 5,

the side airbag device further includes two studs provided in the inflator so as to be separated from each other in a longitudinal direction and exposed from the rear cavity and fastened to the vehicle seat,

the rear end of the first tether is fastened to the rear cavity rear portion by the two studs.

7. The side airbag apparatus according to claim 6,

the front end of the first tether has a length equal to or longer than the distance between the two studs.

8. The side airbag apparatus according to claim 6 or 7,

the front end of the first tether is connected to a range including a portion having the shortest distance to the stud in the front edge portion of the rear cavity.

9. The side airbag apparatus according to any one of claims 2 to 5,

the side airbag device is further provided with two studs that are provided in the inflator so as to be separated from each other in a longitudinal direction thereof, that are exposed from the rear cavity, and that are fastened to the vehicle seat,

the rear end of the second tether is secured to the rear cavity rear by at least one of the two studs.

Technical Field

The present invention relates to a side airbag device that restrains an occupant of a vehicle from the side.

Technical Field

In recent years, an airbag device is basically equipped on a vehicle. An airbag device is a safety device that operates in an emergency such as a vehicle collision, and receives and protects an occupant by inflating and deploying an airbag cushion by air pressure.

The airbag device has various types depending on the installation place and the use. For example, a front airbag device is provided at the center of the steering device in order to protect the driver in a collision from the front-rear direction. In order to protect the occupant from an impact in the vehicle width direction due to a side collision or the like, a curtain airbag device is provided near the ceiling above the side window, and a side airbag device is provided at the seat side portion.

The airbag cushion is preferably inflated and deployed with smoother operation in order to improve the restraining performance. For example, in the side airbag that is the side impact airbag device described in patent document 1, in order to suppress unnecessary operation of the airbag 40, an upper tether portion 61 and a lower tether portion 65 that are tether 60 are provided outside the airbag 40.

Disclosure of Invention

Problems to be solved by the invention

Patent document 1 describes that the rotation of the airbag toward the front of the vehicle during inflation and deployment is restricted by tensioning the tether. However, the tether of patent document 1 is a long belt-shaped member in the front-rear direction, and may be loosened, and there is room for improvement in order to effectively apply tension to the airbag.

The present invention has been made in view of the above problems, and an object thereof is to provide a side airbag device that can effectively suppress the rocking of an airbag cushion and can improve the restraining performance.

Means for solving the problems

In order to solve the above problem, a typical configuration of a side airbag device according to the present invention includes: a rear chamber that is inflated and deployed from a side portion of the vehicle seat and has a long-sized shape in the vertical direction; a front cavity which is connected with the front edge part of the rear cavity and expands to the front and the upper part of the rear cavity; an inflator disposed in the rear of the rear chamber and having a long length in the vertical direction; and a first tether which is cloth-shaped and disposed outside the rear chamber, has a front end connected to a front edge portion of the rear chamber, has a rear end connected to a rear portion of the rear chamber, and is tensioned when the rear chamber is expanded and deployed, wherein a capacity of the rear chamber is smaller than a capacity of the front chamber, the first tether is longer in an up-down direction than in a front-back direction, and the front end of the first tether is connected to a range including at least a lower end of the front edge portion of the rear chamber.

Since the first tether has a structure that is short in the front-rear direction, the tension occurring in the front-rear direction is stronger. Further, since the first tether is long in the up-down direction, the edge of the front end is also long in the up-down direction and can be connected to the rear chamber over a long range. With this first tether, tension can be effectively applied to the rear chamber, and the movement of the rear chamber in the front-rear direction can be effectively restricted. Here, the rear chamber is located at a site including the base in the entire airbag cushion of the inflator. The rear chamber has a small capacity and rapidly becomes a high pressure state immediately after the inflator operates. Thus, the primary tether is also tensioned quickly and strongly. Therefore, in the case of the above configuration, by supporting the rear cavity of the base of the airbag cushion with a strong tension by the first tether, the entire airbag cushion can be prevented from rocking, and the restraining performance of the airbag cushion can be improved.

The side airbag device is further provided with a second tether which is cloth-like and disposed outside the front and rear chambers, has a front end connected to a front edge portion of the front chamber, has a rear end connected to a rear portion of the rear chamber, and is tensioned when the front and rear chambers are inflated and deployed.

By providing the second tether, it is possible to prevent the vehicle from rocking in the vehicle width direction starting from the boundary between the front chamber and the rear chamber.

The second tether may be longer in the front-rear direction than in the up-down direction. With this structure, the second tether capable of preventing the front chamber from rocking can be realized.

The front end of the second tether may be connected to the front edge portion of the front cavity over a range longer than a range in which the rear end of the second tether is connected to the rear of the rear cavity. With this structure, the second tether can effectively pull the front chamber and prevent it from rocking.

The length from the front end to the rear end of the second tether may be set to be shorter than the length of a path from the front edge portion of the front chamber to the rear portion of the rear chamber when the front chamber and the rear chamber are inflated and deployed without being bent. With this length of second tether, effective tensioning can be achieved in response to inflation of the anterior and posterior chambers.

The side airbag device is further provided with two studs provided on the inflator so as to be separated from each other in the longitudinal direction, and exposed from the rear cavity and fastened to the vehicle seat, and the rear end of the first tether may be fastened to the rear portion of the rear cavity by the two studs. With this configuration, the first tether can be effectively tensioned.

The front end of the first tether may have a length greater than the distance between the two studs. With the first tether of this configuration, tension can be effectively applied to the rear chamber.

The front end of the first tether may be connected to a range including a position where the distance from the stud is shortest in the front edge portion of the rear cavity. With the first tether of this configuration, tension can be effectively applied to the rear chamber.

The side airbag device is further provided with two studs provided separately from each other in the longitudinal direction on the inflator and exposed from the rear cavity and fastened to the vehicle seat, and the rear end of the second tether may be fastened to the rear portion of the rear cavity by at least one of the two studs. With this arrangement, the second tether can be effectively tensioned to apply tension to the rear chamber.

Effects of the invention

According to the present invention, it is possible to provide a side airbag device that can effectively suppress the rocking of the airbag cushion to improve the restraining performance.

Drawings

Fig. 1 is a diagram illustrating a side airbag device according to an embodiment of the present invention.

Fig. 2 is a side view of the airbag cushion of fig. 1 (b).

Fig. 3 is a detailed view of the airbag cushion of fig. 1 (a).

Fig. 4 is a view illustrating the vicinity of the rear cavity enlarged in fig. 3.

Fig. 5 is a view illustrating a state when the airbag cushion of fig. 1(a) is inflated and deployed.

Fig. 6 is a diagram illustrating a modification of the second tether of fig. 2.

Detailed Description

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Dimensions, materials, other specific numerical values and the like shown in the embodiments are merely examples for assisting understanding of the present invention, and do not limit the present invention unless otherwise specified. In the present specification and the drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and overlapping description and elements not directly related to the present invention are omitted.

Fig. 1 is a diagram illustrating a side airbag device 100 according to an embodiment of the present invention. Fig. 1(a) shows a side airbag device 100 and a left side seat 102 of a vehicle to which the side airbag device 100 is applied, as exemplified from the right side in the vehicle width direction, that is, from the outer side in the vehicle width direction (vehicle outer side). In all the drawings in fig. 1(a) and the present application, the vehicle longitudinal direction is indicated by arrows f (forward) and b (back), the vehicle width direction left and right are indicated by arrows l (left) and r (right), and the vehicle up and down are indicated by arrows u (up) and d (down), respectively.

As shown in fig. 1(a), the side airbag device 100 is disposed inside the vehicle width direction inner side (vehicle interior side) of a seatback 104 of a seat 102 of the present embodiment. The side airbag apparatus 100 is a structure including an airbag cushion (airbag cushion 106) that restrains an occupant and an inflator 108 that supplies gas to the airbag cushion 106. The airbag cushion 106 is rolled back or folded before operation, housed in a case or the like placed in a side portion of the vehicle interior side of the seat back 104. The airbag cushion 106 in the stored state cannot be visually recognized from the outside because it covers a seat cover or the like.

The inflator 108 is a gas generating device, and in the embodiment, a cylinder type, that is, a cylindrical type is used. The inflator 108 is built in the rear portion of a rear chamber 116, described later, of the airbag cushion 106, and has a long side along the vertical direction of the seat back 104. The inflator 108 is electrically connected to the vehicle side, and is activated upon receiving a signal detected from a collision from the vehicle side to supply gas to the airbag cushion 106.

The inflator that is currently in widespread use is of a type that generates gas by filling a gas generating agent and burning the gas, a type that supplies gas without generating heat by filling compressed gas, or a type that utilizes a mixture of two types of gas, i.e., combustion gas and compressed gas. As the inflator 108, any type may be used.

The inflator 108 includes two studs 110a and 110b provided separately in the longitudinal direction. The studs 110a, 110b are exposed to the outside through the base cloth of the airbag cushion 106, and are fastened to the frame of the seat back 104, and the like. The airbag cushion 106 is also mounted on the seat back 104 because the studs 110a, 110b extend through the airbag cushion 106 and are fastened to the seat back 104.

Fig. 1(b) is a diagram illustrating a state after the airbag cushion 106 in fig. 1(a) is inflated and deployed. When a sensor provided in the vehicle detects a collision, the inflator 108 receives an operation signal and discharges gas, and the airbag cushion 106 breaks the skin or the like of the seat airbag cushion 106 by the gas, and expands and deploys into the indoor space.

The airbag cushion 106 is inflated and deployed in a flat shape as a whole. The outer surface of the airbag cushion 106 includes a vehicle width direction left main panel 106a and a vehicle width direction right main panel 106 b. The main panels 106a and 106b are made of base cloth and are integrally formed in a bag shape by sewing, adhesion, or the like. In addition, the airbag cushion 106 may be formed by weaving using OPW (One-Piece Woven) or the like.

In the present embodiment, two types of tethers, a first tether 112 and a second tether 114, are provided on the outer side of the airbag cushion 106 in order to suppress the rocking of the airbag cushion 106. Hereinafter, the structure of the airbag cushion 106 will be further described, focusing on the structure and function of each tether.

Fig. 2 is a side view of the airbag cushion 106 in fig. 1 (b). Fig. 2(a) shows a general outline of the airbag cushion 106. The first tether 112 and the second tether 114 are suspended outside the airbag cushion 106. These tethers are cloth-like members, and are formed of, for example, the same kind of base cloth as the main panel 106a and the like. The first tether 112 and the second tether 114 are together tensioned when the airbag cushion 106 is inflated and deployed, applying tension to the airbag cushion 106, inhibiting the airbag cushion 106 from rocking.

Fig. 2(b) is a diagram in which the first tether 112 and the second tether 114 of fig. 2(a) are detached. Before the description of each tether, each part of the airbag cushion 106 will be described in detail.

The interior of airbag cushion 106 is divided into a rear chamber 116 and a front chamber 118. The rear chamber 116 is a portion of the airbag cushion 106 located at the base, and is formed at the lower portion of the rear side of the vehicle. The rear cavity 116 is elongated in the up-down direction along the seat back 104, and the seat back 104 is shown in fig. 1 (b).

Because of the built-in inflator 108, see fig. 3, the rear chamber 116 is provided with a total of two bolt holes 120 through which the studs 110a, 110b pass. The rear chamber 116 has a smaller volume than the front chamber 118 and the inflator 108 enters a high pressure condition immediately after activation. The skin of the seat back 104 is rapidly ruptured by the rear cavity 116, allowing the entire airbag cushion 106 to expand and deploy rapidly.

The first tether 112 is disposed outside of the rear cavity 116, with a forward end 122 connected to a forward edge portion 124 of the rear cavity 116 and a rearward end 126 connected to the rear of the rear cavity 116. In this embodiment, the rear end 126 of the first tether 112 is provided with two bolt holes 128 and is secured to the rear of the rear cavity 116 by two studs 110a, 110 b.

The vehicle fore-aft length of the first tether 112 from the front end 122 to the bolt hole 128 is shorter than the vehicle fore-aft length from the front edge portion 124 when the rear cavity 116 is deployed to the bolt hole 120. With this structure, the side airbag device 100 can efficiently tension the first tether 112. Thus, the first tether 112 is tensioned as the rear cavity 116 expands, pulling the front edge portion 124 of the rear cavity 116 to the rear of the vehicle, suppressing the rocking of the rear cavity 116.

The anterior chamber 118 is formed adjacent to the anterior edge portion 124 of the posterior chamber 116 and is configured to expand forward and upward of the posterior chamber 116. The front cavity 118 expands from the seat back 104 into the range of the occupant in front of the vehicle, positively restraining the occupant.

Secondary tether 114 is disposed outside of forward cavity 118 and rearward cavity 116, with forward end 130 attached to a forward edge portion 132 of forward cavity 118 and rearward end 134 attached to the rear of rearward cavity 116. In this embodiment, the rear end 134 of the second tether 114 is provided with a bolt hole 136 and is fastened to the rear of the rear cavity 116 by one of the studs 110a, 110b, for example by the stud 110 a.

The second tether 114 also has a vehicle front-rear length of the bolt hole 136 from the front end 130 to the rear end 134 that is shorter than a length of a vehicle front-rear path from the front edge portion 132 of the front chamber 118 to the bolt hole 120 when the airbag cushion 106 is inflated and deployed without bending. With this structure, the side airbag device 100 can efficiently tension the second tether 114. Thus, secondary tether 114 is tensioned as anterior chamber 118 and posterior chamber 116 expand, primarily inhibiting the rocking of anterior chamber 118.

Fig. 3 is a detailed view of the airbag cushion 106 of fig. 1(a), corresponding to fig. 1 (b). A baffle 138 that separates the rear chamber 116 and the front chamber 118 is provided inside the airbag cushion 106. The baffle 138 is a wall-shaped portion formed using the same type of base fabric or the like as the main panel 106a and the like, and is connected to the main panels 106a and 106b in the vehicle width direction. A plurality of exhaust holes 140, 142, etc. are provided in the baffle 138. The exhaust holes 140 and 142 are gas flow ports through which gas passes from the rear chamber 116 side to the front chamber 118 side.

An internal tether 144 is also disposed within the airbag cushion 106. The inner tether 144 is also formed using a base fabric or the like of the same type as the main panels 106a, 106b, and is connected to the main panels 106a, 106b in the vehicle width direction, thereby limiting the width of the airbag cushion 106 in the vehicle width direction. A predetermined external exhaust port, not shown, for discharging gas to the outside is provided at a predetermined position of the airbag cushion 106.

The front end 122 of the first tether 112, for example, may be attached to the main panel 106a by stitching, along the portion where the flap 138 is stitched to the main panel 106 a. The first tether 112 has a shape longer in the vertical direction than in the front-rear direction, and particularly, the tip 122 is formed to have a length equal to or longer than the distance D1 between the two studs 110a and 110 b. The first tether 112 is short in the front-rear direction of the vehicle, and the front end 122 is also long in the vertical direction, so that tension that stretches toward the rear of the vehicle is applied to a wide range in the vertical direction of the rear cavity 116, and the swinging of the rear cavity 116 can be suppressed.

The forward end 122 of the first tether 112 is attached to an extent at least including a lower end 146 in the forward edge portion 124 of the rear cavity 116. Here, since the inflator 108 is built in the lower portion of the rear, the entire airbag cushion 106 inflates and deploys obliquely upward toward the front. At this time, since the front end 122 of the first tether 112 supports the lower end 146 of the rear chamber 116, the rocking of the entire airbag cushion 106 can be effectively suppressed.

Fig. 4 is a diagram illustrating an enlarged view of the vicinity of the rear cavity 116 of fig. 3. The front end 122 of the first tether 112 is connected to a range including portions P1 and P2 in the front edge portion 124 of the rear cavity 116 where the distance from the studs 110a, 110b is shortest. With the first tether 112 of this construction, efficient tensioning between the studs 110a, 110b and the leading edge portion 124 of the rear cavity 116 can efficiently apply tension to the rear cavity 116 to inhibit rocking.

Reference is again made to fig. 3. The second tether 114 is configured to be longer in the front-rear direction than in the up-down direction. With this structure, second tether 114 can extend from stud 110a to leading edge portion 132 of forward cavity 118, and rocking of forward cavity 118 can be prevented.

In the present embodiment, the range in which the front end 130 of the second tether 114 and the front edge portion 132 of the front cavity 118 are connected is sewn over a longer range than the range in which the rear end 134 of the second tether 114 is connected to the rear of the rear cavity 116, that is, the range through which the stud 110a passes. With this structure, when the airbag cushion 106 is inflated and deployed, the second tether 114 can efficiently pull the front edge portion 132 of the front chamber 118 to the stud 110a side, and the front chamber 118 and even the entire airbag cushion 106 can be effectively prevented from rocking.

Fig. 5 is a diagram illustrating a state when the airbag cushion 106 of fig. 1(a) inflates and deploys. Fig. 5(a) is a view of the airbag cushion 106 viewed from the vehicle exterior side, and illustrates the behavior of the airbag cushion 10 in the vehicle front-rear direction with a broken line. As shown in fig. 5(a), the conventional airbag cushion 10 can be inclined in the forward direction by the pressure of gas supplied from the inflator or in the rearward direction by the recoil force.

The airbag cushion 106 of the present embodiment supports the rear chamber 116 by tensioning the first tether 112. The rear chamber 116 is a portion located at the root in the entire airbag cushion 106 of the built-in inflator 108 (see fig. 3, etc.). The rear chamber 116 is of a smaller volume and is at a higher pressure immediately after the inflator 108 is activated. Thus, the first tether 112 is also rapidly and strongly tensioned. Therefore, in the present embodiment, the rear chamber 116 at the base of the airbag cushion 106 is supported by strong tension of the first tether 112, and thus, the entire airbag cushion 106 is prevented from swinging in the front-rear direction, and the restraining performance of the airbag cushion 106 can be improved.

Fig. 5(b) is a schematic view of the airbag cushion 106 as viewed from above, and illustrates the behavior of the conventional airbag cushion 10 in the vehicle width direction with a broken line. The conventional airbag cushion 10 is also sometimes rocked in the vehicle width direction by the pressure of the gas. However, in the present embodiment, in addition to the above-described first tether 112, the second tether 114 is also tensioned to also apply tension to the front cavity 118 that pulls toward the rear of the vehicle. Therefore, the airbag cushion 106 can be prevented from rocking in the vehicle width direction, particularly from rocking in the vehicle width direction starting from the boundary between the front chamber 118 and the rear chamber 116.

As described above, the side airbag device 100 of the present embodiment can effectively suppress the rocking of the airbag cushion 106 by the first tether 112 and the second tether 114, and improve the restraining performance of the airbag cushion 106. Further, in this embodiment, the first tether 112 and the second tether 114 are provided together on the occupant side of the airbag cushion 106, but may be provided on the side opposite to the occupant, or may be provided on the occupant side and the opposite side, respectively.

In the present embodiment, a description has been given assuming that the airbag cushion 106 is provided on the vehicle interior side of the seat back 108. Since there is no structure for supporting the side door or the like of the airbag cushion 106 on the vehicle interior side of the seatback 108, the first tether 112 and the second tether 114 that suppress rocking function more appropriately. However, of course, the airbag cushion 106 may be disposed on the vehicle outside of the seat back 108, and in this case, the rocking of the first tether 112 and the second tether 114 may also be suppressed, thereby improving the restraining performance of the airbag cushion 106.

Fig. 6 is a diagram illustrating a second tether 200 that is a modification of the second tether 114 of fig. 2. The upper and lower sides of the second tether 114 are formed in a substantially parallel band shape, and the front end 202 of the second tether 200 is wider in upper and lower width than the rear end 204, and is formed in a shape in which the upper side 206 and the lower side 208 are unfolded from the rear end 204 to the front end 202 in a non-parallel manner. In the second tether 200 of this configuration, the front end 202 is sewn to the front edge portion 132 of the front chamber 118 in a range longer than the rear end 204, and the front edge portion 132 is efficiently pulled to the rear end 204 side, whereby the airbag cushion 106 can be prevented from rocking.

In addition, although the second tether 114 of fig. 2 and the second tether 200 of fig. 6 are illustrated as being polygonal in the drawing, the shape is not limited, and for example, even if the shape is a rounded shape having an ellipse without corners in the outline, the function of pulling the front cavity 118 backward can be realized. Even in the second tether of such a shape, the front cavity 118 can be efficiently pulled rearward to suppress the rocking of the airbag cushion 106 by connecting the front end side to the front edge portion 132 of the front cavity 118 in a range longer than the width of the rear end side.

Preferred embodiments of the invention have been described above with reference to the accompanying drawings, but it goes without saying that the invention is not limited to the examples concerned. It should be understood by those skilled in the art that various changes and modifications to the examples described above are obvious and may be made within the technical scope of the present invention.

In the above-described embodiment, the description has been given of the example in which the airbag device according to the present invention is applied to an automobile, but the airbag device may be applied to an airplane, a ship, or the like other than an automobile, and similar effects can be obtained.

Industrial applicability of the invention

The present invention is applicable to a side airbag device that restrains an occupant of a vehicle from the side.

Description of the symbols

100 … side airbag apparatus 102 … seat

104 … seat back 106 … airbag cushion

106a … left main panel 106b … Right main panel

108 … inflator 110a … Upper stud

110b … lower stud 112 … primary tether

114 … Secondary tether 116 … Back Cavity

118 … front 120 … rear bolt hole

122 … front end of primary tether 124 … front edge portion of rear lumen

126 … rear end 128 … of primary tether bolt hole of primary tether

130 … front end 132 of the secondary tether forward portion of the forward lumen of 132 …

134 … rear end of secondary tether 136 … bolt hole of secondary tether

138 … baffle 140, 142 … exhaust holes

144 … inner tether 146 … lower end of front edge portion of rear chamber

Front end of second tether 202 … modification example of 200 … modification example

204 … variant rear end 206 … variant upper edge of second tether

Distance between studs D1 … on lower edge of second tether in 208 … modification

10 … conventional airbag cushion