Vehicle side airbag device and manufacturing method for a side airbag

Abstract

Vehicle side airbag device (10) comprising: a side airbag (20) housed within a side support section (16A) of a backrest (16) of a vehicle seat (12), which inflates and deploys towards the front of the vehicle (FRONT) of the side support section (16A) when supplied with gas by a gas generator (22), the side airbag (20) comprising: a bag body (24) formed in a bag shape; a separating cloth (26) between front and rear and between left and right, which divides the bag body (24) into a front bag section (40) and a rear bag section (42), and which divides the rear bag section (42) into a left chamber (46) and a right chamber (48) in a row along the width direction of the vehicle in an inflated and deployed state of the bag body (24);and characterized by a belt (30, 32) provided on at least one chamber consisting of the left chamber (46) and the right chamber (48), which absorbs tension in the inflated and unfolded state and which limits the inflation of the at least one chamber towards the front of the vehicle (FRONT), and in that the separating cloth (26) between front and rear and between left and right comprises a left cloth (36) and a right cloth (38) which are arranged in a row in the width direction of the vehicle in the inflated and unfolded state.

Description

BACKGROUND Technical area

[0001] The present disclosure relates to a vehicle side airbag device and a manufacturing method for a side airbag. State of the art

[0002] In a side airbag device described in Japanese patent application (JP-A) 2012-025182, a side airbag is divided into a first inflation section (rear pocket section) and a second inflation section (front pocket section) by a partition (a section for separating the front and rear) provided at a suitable position for the occupant's rib bones. A gas generator is provided within the first inflation section, and gas generated by the gas generator is supplied to the front pocket section through a connecting hole formed at the partition between the front and rear.In the case described above, by applying a higher pressure to the rear pocket section than to the front pocket section, the retention performance for an occupant in a suitable position in the initial state can be ensured, and effects on an occupant can be suppressed even in a case where the occupant is in an unsuitable or unfavorable position (Out of Position).

[0003] In the side airbag system described above, however, the rear pocket section, when inflated and deployed, protrudes further towards the front of the vehicle than the leading edge section of a side support section of a seat backrest. Consequently, there is a possibility that the rear pocket section could strike an occupant in an unfavorable position. BRIEF EXPLANATION OF THE INVENTION

[0004] The present disclosure provides a vehicle side airbag device and a manufacturing method for a side airbag which can prevent or avert an occupant in an unfavorable position from being affected or struck by a rear bag section.

[0005] A vehicle side airbag device according to a first aspect comprises the following: a side airbag housed within a side support section of a backrest of a vehicle seat, which inflates and deploys towards the front of the side support section of the vehicle when supplied with gas by a gas generator, the side airbag comprising: a pocket body having a pocket shape; a front-to-rear and right-to-left separating flap, which divides the pocket body into a front pocket section and a rear pocket section, and which divides the rear pocket section into a left chamber and a right chamber arranged along a vehicle width direction in an inflated and deployed state.subdivided in the extended state of the bag body; and a strap provided in at least one chamber, namely the left or the right chamber, which absorbs tension in the inflated and unfolded state and which restricts the inflation or expansion of at least one chamber towards the front of the vehicle.

[0006] In the first aspect, gas generated by the gas generator is fed into the bag body as a result of the generator's operation. The bag body inflates and unfolds towards the front of the vehicle, specifically towards the side support section of the backrest. The bag body is divided into a front and rear section by a partition fabric running from front to back and from right to left. This partition fabric also divides the rear bag section into left and right chambers. When the bag body is inflated and unfolded, these left and right chambers are aligned laterally along the vehicle. Therefore, this first aspect allows for a smaller inflation thickness in the rear bag section (forward and aft, or longitudinally) than in the rear bag section (across the vehicle).Furthermore, when the bag body is inflated and unfolded, the strap attached to at least one of the left and right chambers becomes tensioned in such a way that inflation of that chamber towards the front of the vehicle is restricted. As a result, the protrusion of the left and right chambers from the side support section towards the front of the vehicle is adjusted. Accordingly, this first aspect can suppress or prevent an occupant in an unfavorable position from being struck by a rear section of the bag.

[0007] According to a second aspect, the separating cloth between front and rear and between left and right in the vehicle side airbag device of the first aspect explained above can comprise a left cloth and a right cloth, which are lined up in the side direction of the vehicle when inflated and unfolded.

[0008] In the second aspect, the rear section of the bag is divided into left and right chambers by the left and right panels when the bag body is inflated and unfolded. These chambers are arranged in a line across the width of the vehicle. This reduces the impact on the occupant even if the inflated and unfolded left and right chambers strike an occupant in an unfavorable position from the rear of the vehicle, because the left and right chambers move in different directions (across the width of the vehicle).

[0009] According to a third aspect, in the vehicle side airbag device of the aspects explained above, a front edge section of the belt may be sewn to a front section of the at least one chamber; and a rear edge section of the belt may be sewn to a rear section of the at least one chamber.

[0010] In the third aspect, inflation thicknesses in the vehicle width direction and in the vehicle length direction of the chamber in which the belt is provided can be adjusted by changing the seam position of the front edge section of the belt on the front section of the chamber where the belt is provided, and the seam position of the rear edge section of the belt on the rear section of the chamber where the belt is provided.

[0011] According to a fourth aspect, in the vehicle side airbag device, according to the aspects explained above, outer circumferential edge sections of a base cloth, which is folded along a fold section positioned in a front edge section of the bag body, may be sewn together at an outer circumferential seam section; and a rear edge section of the separating cloth between front and rear and between left and right may be sewn together with a rear edge section of the bag body at the outer circumferential seam section.

[0012] In the fourth aspect, the back edge section of the divider fabric (between front and back, and between left and right) is sewn to the back edge section of the bag body at the outer perimeter seam section. This occurs when the base fabric is folded and the outer perimeter edge sections of the base fabric and the bag body are sewn together at the outer perimeter seam section. Following this fourth aspect may require fewer stitches. Furthermore, this fourth aspect can reduce the seam length, as it eliminates the need to sew the folded section of the base fabric to the outer perimeter seam section.

[0013] According to a fifth aspect, the vehicle side airbag device may, after any of the aspects explained above, further include a separating cloth between top and bottom, which divides the bag body into the front bag section, the rear bag section and a lower bag section.

[0014] In the fifth aspect, the bag body is divided into the front bag section, the rear bag section, and the lower bag section. Accordingly, the fifth aspect allows the internal pressures of the respective bag sections to be individually adjusted to the load resistance at each area of ​​the occupant in a case where, for example, the front sections of the occupant's chest and abdomen are restrained by the front bag section, the rear sections of the chest and abdomen are restrained by the rear bag section, and the occupant's lumbar region is restrained by the lower bag section.

[0015] A sixth aspect is a manufacturing method for a side airbag provided in the side airbag device according to the fourth aspect, wherein the method for manufacturing the side airbag comprises: applying one or two straps on one side or both sides in a direction orthogonal to the folding section of the base cloth prior to folding; applying a left cloth and a right cloth provided on the separating cloth between front and rear and between left and right on both sides of the base cloth; and sewing front edge sections positioned on the side of the folding section of the left cloth and the right cloth, and of the one or two straps to the base cloth at front edge seam sections;Folding the base fabric along the fold section, and sewing together middle sections in a direction orthogonal to the fold section of the left and right fabrics at a middle seam section parallel to the front edge seam sections; and sewing a back edge section of one strap or the two straps to the base fabric at a back edge seam section, and sewing outer perimeter edge sections of the folded base fabric to the upper edge sections, back edge sections, and lower edge sections of the left and right fabrics at the outer perimeter seam section, or sewing together the back edge section of one strap or the two straps while the outer perimeter edge sections of the folded base fabric, the upper edge sections, the back edge sections, and the lower edge sections of the left and right fabrics are sewn to the outer perimeter seam section.

[0016] In the sixth aspect, a side airbag, which is provided for on the vehicle side airbag device described in the fourth aspect, can be manufactured by carrying out the first three steps as described above. A vehicle side airbag device equipped with the side airbag can be used and function similarly to that described in the fourth aspect.

[0017] A seventh aspect is a manufacturing method for a side airbag provided in the vehicle side airbag device according to the fourth and fifth aspects, wherein the method for manufacturing the side airbag comprises: placing the separating cloth between top and bottom on one side in one direction along the folding section of the base cloth prior to folding, and sewing an upper edge section of the separating cloth between top and bottom, positioned on the other side in the direction along the folding section, to the base cloth at an upper edge seam section;Placing one or two straps on a central side in the direction along the fold section, and on one or both sides in a direction orthogonal to the fold section of the base cloth, placing a left cloth and a right cloth provided on the separating cloth between front and back and between left and right on both sides of the base cloth, and sewing front edge sections positioned on the side of the fold section of the left cloth and the right cloth, and of the one or two straps to the base cloth at front edge seam sections;Folding the base cloth and the separating cloth between top and bottom along the fold section, and sewing together middle sections in a direction orthogonal to the fold section of the left cloth and the right cloth at a middle seam section that runs parallel to the front edge seam sections, and sewing together lower edge sections that are positioned on a side opposite the upper edge seam section of the folded separating cloth between top and bottom at a lower edge seam section;and sewing a back edge section of one strap or the two straps to the base cloth at a back edge seam section and sewing outer circumference edge sections of the base cloth, which has been folded, to upper edge sections and back edge sections of the left cloth and the right cloth and to the outer circumference seam section, or sewing together the back edge section of one strap or the two straps, while the outer circumference edge sections of the base cloth, which has been folded, are sewn to the upper edge sections and the back edge sections of the left cloth and the right cloth and to an outer circumference seam section.

[0018] In the seventh aspect, a side airbag provided in the vehicle side airbag device described in the fifth and fourth aspects can be manufactured by performing the first through fourth operations described above. A vehicle side airbag device incorporating the side airbag can achieve a similar operation and function as described in the fifth aspect.

[0019] As explained above, the vehicle side airbag device and the manufacturing process of a side airbag can, according to the aspects explained above, prevent or suppress a rear bag section from acting on an occupant in an unfavorable position or seating position. BRIEF EXPLANATION OF THE FIGURES

[0020] Exemplary embodiments are described in detail based on the figures below, in which:

[0021] Fig. 1 is a side view of a vehicle seat in which a vehicle side airbag device is installed, illustrated in an inflated and deployed state according to a first exemplary embodiment;

[0022] Fig. 2 an enlarged side view of the in Fig. 1 illustrated side airbags is;

[0023] Fig. 3 an enlarged section view along the line F3-F3 in Fig. 2 is;

[0024] Fig. 4 a perspective view of a partition from front to back and from left to right, of a partition between top and bottom and of straps is shown in the Fig. 1 illustrated side airbag are provided;

[0025] Fig. 5 a sectional view according to the Fig. Figure 3 illustrates a modified example of the seam positions of the straps in relation to the left and right chambers;

[0026] Fig. 6 a sectional view according to the Fig. Figure 3 illustrates another modified example of seam positions of straps opposite the left and right chambers;

[0027] Fig. 7 a sectional view according to the Fig. 3 is an example of a profile state in a rippled top view (a non-inflated open state) of the in Fig. 6 illustrated side airbags;

[0028] Fig. 8 a sectional view according to the Fig. 3 is another example of a profile state in a rippled top view (a non-inflated open state) of the in Fig. The 6 side airbags shown illustrate this;

[0029] Fig. 9 is a side view of the profile state seen from the side in the elevated top view, which is in Fig. 7 is illustrated;

[0030] Fig. 10 is a sectional view to illustrate sewing operations with reference to a sag that occurs in a base fabric of a back pocket section at a height that corresponds to a cross-section that runs along the line F7-F7 in Fig. 9 was taken, which had an inflated and unfolded state of the in Fig. The 6 side airbags shown illustrate this;

[0031] Fig. 11 a sectional view according to the Fig. 10 to explain another example of the sewing process is;

[0032] Fig. 12. A ripped top view showing a state before sewing the in Fig. 1 side airbags shown illustrates;

[0033] Fig. 13 is an explanatory diagram to illustrate a first process or step in a manufacturing process of the side airbag;

[0034] Fig. 14 an explanatory diagram to clarify a second process in the manufacturing process;

[0035] Fig. 15 an explanatory diagram to clarify part of a third process in the manufacturing process;

[0036] Fig. 16 an explanatory diagram to clarify another part of the third process;

[0037] Fig. 17 an explanatory diagram to clarify yet another part of the third process;

[0038] Fig. 18 a cross-sectional view according to the Fig. Figure 3 represents an inflated and deployed state of a side airbag according to a comparative example;

[0039] Fig. 19 a side view according to the Fig. 2, which illustrates an inflated and deployed state of a side airbag provided in a vehicle side airbag device according to a second exemplary embodiment; and

[0040] Fig. 20 is a rippled top view showing a state before the side airbag was sewn on, which is in Fig. 19 is shown. DETAILED EXPLANATION First exemplary embodiment

[0041] The following is an explanation of a vehicle side airbag system. 10 and a manufacturing process for a side airbag 20 according to a first exemplary embodiment based on Fig. 1 to Fig. 17. Note that in each of the appropriate figures, the FRONT arrow, the UP arrow, and the OUTSIDE arrow each denote the direction forward (the direction of travel), the direction upward, and the direction outward in the vehicle's width direction, respectively. In the following explanation, a representation that simply uses the directions forward and backward, left and right, and up and down, unless specifically stated otherwise, denotes the directions forward and backward in the vehicle's direction of travel, the direction left and right in the vehicle's left and right direction (vehicle width direction), and the direction up and down in the vehicle's up and down direction or vehicle height direction.

[0042] A in Fig. 1 illustrated vehicle seat 12 For example, a driver's seat in a left-hand drive car. The vehicle seat 12 includes a seat cushion14 , on which an occupant P sits, a backrest 16 , which supports the back of occupant P and provides a headrest 18 , which supports the head of the occupant P. Note that in the present exemplary embodiment, the direction forwards and backwards, the direction left and right (lateral direction) and the direction up and down of the vehicle seat 12 are aligned to the direction forwards and backwards, the direction left and right (latitudinal direction), and the direction up and down of the vehicle. In Fig. 1. A crash test dummy P is placed sitting in the vehicle seat. 12 instead of an actual occupant. Dummy P, for example, is a World Side Impact Dummy (World SID) of an American adult male of the 50th percentile (AM50). Dummy P is in a standard seated position specified in crash test procedures. One position of the seat cushion 14in the direction forwards and backwards relative to the vehicle and a tilt position (an angle of inclination) of the backrest 16 opposite the seat cushion 14 are appropriately adjusted to reference seating positions. For better understanding of the explanation, the dummy P is referred to below as "occupant P".

[0043] A side support section 16A is located on a side section in the direction of the vehicle's width, outside the backrest 16 planned. The side support section 16A extends further than a backrest surface (not shown in the figures) of the backrest 16 The side airbag protrudes towards the front of the vehicle (bulges outwards) and is designed to support the occupant P from the outside in the direction of the vehicle's width. 20 , which is a component of the vehicle's side airbag system 10 is, and an inflation device 22(a gas generator) that produces gas inside the side airbag 20 generated are within the side support section 16A accommodated.

[0044] The side airbag 20 is within the side support section 16A in a modular (packed) state together with the gas generator 22 folded and stowed away. The side airbag 20 blows towards the front of the vehicle's side support section 16A due to gas pressure from the generator 22 It is generated, opens up, and unfolds to slide between the occupants P and a vehicle body side section (in this example, a side door panel not shown in the figures). A cushion part and a cover part, which are attached to the side support section 16A They are built-in and tear under the inflation pressure of the side airbag. 20during inflation and unfolding, such that a tear line section, which is attached to a front section (a front edge section) 15 in this example) of the side support section 16A It is designed to tear open. An opening so that the side airbag 20 towards the outside of the side support section 16A inflates and unfolds, thereby becoming visible at the front edge section. 15 of the side support section 16A formed. Note that the directions forward and backward, left and right, and up and down of the side airbag are defined. 20 as described in the explanation below, unless specifically stated otherwise, referring to directions of the side airbag. 20 in an inflated and unfolded state and in the directions forwards and backwards, lefts and rights, and ups and downs of the backrest 16 are aligned.

[0045] As in Fig. 1 to Fig. Figure 3 illustrates the side airbag. 20 through a pocket-shaped pocket body 24 , a separating cloth 26 between front and back and between left and right, which is the inside of the bag body 24 divides into front and back parts, a separating cloth 28 between top and bottom, which is the inside of the bag body 24 divided into top and bottom, and part of left and right straps (inflation limiting straps, restriction straps) 30 , 32 constructed. The bag body 24 is made from a single base cloth (main piece) 34 formed from a fabric material, such as nylon or polyester, folded and shaped into an elongated pocket section by sewing together outer circumferential edge sections at an outer circumferential seam section S7. As in Fig. 1 illustrates the bag body 24 Viewed from the side in the inflated and unfolded state, it is shaped to form an elongated essentially elliptical shape (an essentially rectangular shape) that runs along the direction of the backrest. 16 It runs upwards and downwards and is adjusted to a size capable of restraining the shoulder area (S), chest area (C), abdomen (B), and lumbar area (L) of the occupant (P). In the inflated and unfolded state, it has a folding section. 34F , in which the base cloth 34 folded up, constructed in such a way that it is attached to a front edge section of the bag body. 24 is positioned.

[0046] The separating cloth 26 The left cloth encompasses the area between front and back and between right and left (the dividing section from front to back). 36 , which serves as a separating cloth on the left side, and a right cloth38 , which serves as a separating cloth on the right side. The zinc cloth 36 and the right cloth 38 are each made by cutting out a cloth material similar to the base cloth 34 of the bag body 24 formed, and each is in an elongated form with a length in the direction from top to bottom (longitudinal direction) of the bag body. 24 shaped. Middle sections in the direction from front to back (locations between front edge sections and back edge sections) of the left cloth. 36 and the right cloth 38 , which overlap each other, are sewn together at a central seam section S3, which runs along the direction from top to bottom of the bag body. 24 extends to the upper edge sections and the rear edge sections of the left cloth. 36 and the right cloth 38are with an upper edge section and a rear edge section of the bag body 24 sewn together at the outer circumferential seam section S7. The front edge section of the left cloth. 36 is located on a section of a side section that runs in the middle direction from front to back. 34A of the basic cloth 34 sewn to a front edge seam section S21, which runs along the direction from top to bottom of the bag body 24 extends and runs parallel to the middle seam section S3. The front edge section of the right cloth 38 is located on a section of the other side that runs in the middle direction from front to back. 34B of the basic cloth 34 sewn to a front edge seam section S22, which runs along the direction from top to bottom of the bag body 24 extends and runs parallel to the middle suture section S3.

[0047] A cylindrically shaped river regulation section 26A is on a rear section of the partition cloth 26 Shaped in the direction from front to back and from left to right. The axial direction of the river regulation section. 26A runs along the direction from top to bottom of the bag body. 24 and is located in the middle section in the direction from top to bottom of a rear section within the bag body. 24 installed. The river regulation section 26A forms a diffuser to regulate the gas flow (distributing gas upwards and downwards) from the gas generator 22 As in Fig. 1, Fig. 2 and Fig. Figure 4 illustrates sections of the left cloth. 36 and the right cloth 38 , which are closer to an upper end face than the river regulation section 26A lie, front extension sections 36A , 38A, which extend diagonally upwards towards the front of the bag body 24 extend towards. Width dimensions of the left cloth 36 and the right cloth 38 decrease in the forward-extending sections 36A , 38A .

[0048] The separating cloth 26 The inside of the bag body is divided in the direction from front to back and from left to right, according to the structure described above. 24 into a front pocket section 40 and a rear pocket section 42 The left cloth 36 and the right cloth 38 of the separating cloth 26 from front to back and from left to right are designed so that they are inflated and unfolded when the bag body is inflated. 24 (of the side airbag) 20 ) are lined up in the direction of the vehicle's width. The left cloth 36 and the right cloth 38are set in such a way that they change as they progress from an outer circumferential section of the river regulation section. 26A , which is located at a rear end section within the rear pocket section 42 is positioned towards a middle section in the direction from front to back of the bag body. 24 extend in a forked shape, and the inside of the rear pocket section 42 into a left chamber 46 and a right chamber 48 subdivide, which together form a pair of left and right chambers.

[0049] In the side airbag 20 , in which the inside of the bag body 24 through the separating cloth 26 When divided between front and back and between left and right, a front extension section is formed. 42A , which extends towards the top of the front pocket section 40 extends to an upper section of the rear pocket area42 shaped. The upper section within the rear pocket section. 42 , which covers the front extension section 42A It is constructed in such a way that it does not enter the left chamber. 46 and the right chamber 48 is subdivided. The river regulation section 26A It does not extend as far as an upper edge section of the rear pocket section. 42 , and an upper end opening 50 opens at an area on the upper section within the rear pocket section 42 , which is not subdivided. The left and right chambers. 46 , 48 and the inside of the river regulation section 26A are connected by the upper end opening 50 connected. A pair of upper and lower connecting holes. 52 (Openings) are on both the left cloth 36 as well as on the right cloth 38 formed, and the left and right chambers 46, 48 and the inside of the front pocket section 40 are connected via the connecting holes 52 associated with

[0050] The left cloth 36 and the right cloth 38 of the separating cloth 26 in the direction from front to back and from left to right do not reach a lower edge section of the bag body. 24 , and a lower pocket section 44 , which is from the front pocket section 40 and the rear pocket section 42 through the separating cloth 28 The separation between top and bottom is located in a lower section of the bag body. 24 shaped. The separating cloth 28 The space between the top and bottom is created by cutting out a piece of fabric similar to the base fabric. 34 of the bag body 24 formed in an elongated belt shape, and has a length dimension equal to a width dimension of the base cloth.34 before folding (a measurement in a direction perpendicular to the fold section) 34F ) is, as in Fig. 12 and Fig. 13 illustrated.

[0051] The separating cloth 28 The space between top and bottom is created by folding a middle section lengthwise along a fold line. 28F , which runs along the fold section 34F of the basic cloth 34 runs (see Fig. 4) folded or double-folded, and is on the lower section side of the bag body 24 installed, its longitudinal direction running parallel to the width direction of the base cloth 34 runs along an edge section on the long side (lower edge section) of the folded separating cloth. 28 from top to bottom is on the lower edge section side of the bag body. 24positioned, and one side section and the other side section of the edge section on one long side on each side of the fold section 28F are placed on top of each other and sewn together at a lower edge seam section S4, which runs along the direction of the bag body. 24 extending from front to back. The other edge section on the long side (the upper edge section) of the folded divider cloth. 28 between top and bottom, there is a side section on one side of the fold section. 28F on, which with the one side section 34A of the basic cloth 34 is sewn to an upper edge seam section S1, and points to the other side section on the other side of the fold section. 28F on, which is on the other side section 34B of the basic cloth 34 is sewn to the upper edge seam section S1.

[0052] The separating cloth 28between top and bottom extends along a rear end section of the separating cloth. 28 between top and bottom towards the underside of the bag body 24 and the lower edge seam section S4 curves towards the side of the lower edge section of the bag body 24 along a front edge section of this extended section. Accordingly, a tubular check valve is used. 28A formed, extending towards the lower side of the bag body 24 at the rear end section of the separating cloth 28 between top and bottom. The inside of the river regulation section. 26A and the inside of the lower pocket section 44 are connected via the check valve 28A and a lower end opening 51 of the river regulation section 26A tied together.

[0053] As in Fig. 1 and Fig. Figure 2 illustrates a pair of upper and lower ventilation holes. 54 (Openings) on a front edge section of the front pocket section 40 of the side airbag 20 formed, and a ventilation hole 56 (an opening) is located on a front edge section of the lower pocket section. 44 The ventilation holes were formed. 54 bring the inside of the front pocket section 40 and the outside of the side airbag 20 connected to each other, and the ventilation hole 56 brings the inside of the lower pocket section 44 and the outside of the side airbag 20 connected with each other.

[0054] The pair of left and right straps 30 , 32 is in the left and right chambers 46 , 48 of the rear pocket section 42 appropriate. As in Fig. 3 illustrates the one belt30 , the one on the left chamber 46 It is intended to have a front edge section that attaches to a front section of the left chamber 46 is sewn on, and a rear edge section that is attached to a rear section of the left chamber 46 is intended. The other belt 32 , the one on the right chamber 48 It is provided for, has a front edge section which is attached to a front section of the right chamber 48 is sewn on, and a rear edge section that is attached to a rear section of the right chamber 48 is planned.

[0055] More precisely, the front edge section of one strap 30 in the middle section of one side section, in the direction from front to back 34A of the basic cloth 34 and at the front edge section of the left cloth 36Sewn to the front edge seam section S21. Additionally, the rear edge section of one strap is sewn to the front edge seam section S21. 30 on a rear section of the base cloth 34 Sewn to a rear edge seam section S61. The front edge section of the other strap. 32 is located in the middle section in the direction from front to back of the other side section. 34B of the basic cloth 34 and at the front edge section of the right cloth 38 sewn to the front edge seam section S22, and the rear edge section of the other strap. 32 is on the rear section of the base cloth 34 sewn to a rear edge seam section S62. Note that in the present exemplary embodiment, the straps 30 , 32 each in the left and right [left] chambers 46 , 48are provided for. However, the setup is not limited to this, and a setup can be used in which one of the straps 30 , 32 omitted.

[0056] As in Fig. Figure 3 illustrates the straps. 30 , 32 so that they are set up in the inflated and deployed state of the side airbag 20 extend along the length of the vehicle. Furthermore, the belts 30 , 32 each has a length dimension such that, in the inflated and deployed state of the side airbag, it 20 to withstand tensile stress (elongation) in the longitudinal direction of the vehicle. Accordingly, the structure is designed so that inflation of the left and right chambers is prevented. 46 , 48 is restricted (suppressed) towards the front of the vehicle in order to remain within a space defined by the seat belts 30 , 32to remain within a predefined area. An inflation thickness W1 of the rear pocket section. 42 in the vehicle width direction and an inflation thickness L1 of the rear pocket section 42 In the longitudinal direction of the vehicle, the longitudinal dimension of the belts can be changed. 30 , 32 be adapted.

[0057] In the present exemplary embodiment, the inflation thickness W1 of the rear pocket section can be 42 in the vehicle width direction and the inflation thickness L1 of the rear pocket section 42 in the longitudinal direction of the vehicle by adjusting the seams of the belts 30 , 32 with regard to the left and right chambers 46 , 48 be changed. As in the example in Fig. Figure 5 illustrates the front edge sections of the straps. 30 , 32as a modified example of the sewn positions, constructed in such a way that they are attached to one side section 34A and the other page section 34B of the basic cloth 34 at different seam sections S81, S83, which continue towards the rear edge of the bag body 24 when the front edge seam sections S21, S22 are offset. Additionally, the sewn section of the rear edge section of the strap can be 30 opposite the rear section of one side section 34A of the basic cloth 34 such as through the in Fig. The illustrated one-dot dash line and two-dot dash line can be changed. As in the example in Fig. Figure 6 illustrates the rear edge sections of the straps. 30 , 32 also be constructed in such a way that they are attached to the body of the bag 24 are sewn on, and the back edge sections of the left cloth 36and the right cloth 38 at the outer circumferential seam section S7.

[0058] To explain using the in Fig. The illustrated example 6 shows the side airbag 20 According to the present exemplary embodiment, a circumferential length of a point of one side section. 34A and the other side section 34B of the basic cloth 34 , which is the rear pocket section 42 forms (see L2 in Fig. 6) longer than a longitudinal dimension of a point on the belts 30 , 32 elected, those within the left and right chambers 46 , 48 are positioned (see L3 in Fig. 6). As in Fig. 7 and Fig. Sections 8 are illustrated. 34A1 , 34B1 with excess length, which is located on one side section 34A and the other page section 34Bappear, constructed in such a way that they point towards the front or the back of the bag body 24 are folded when the side airbag 20 in a profile view from above. The side airbag 20 , which in the Fig. 7 or Fig. The profile shown in the top view (8) is folded using a specific folding technique such as rolling or pleating.

[0059] Fig. 9 is a side view showing the state of the opened profile in the top view, which is in Fig. Figure 7 illustrates this from the side. The single-dot dash lines a, b, which are shown in Fig. The lines shown in 9 are hypothetical lines along the direction of the pocket body. 24 from top to bottom, and these hypothetical lines pass through fold sections that are in Fig. 7. The reference symbols a, b are assigned. As in Fig. Figure 9 illustrates loosely sewn sections S51 and S52 on the upper section of the rear pocket section. 42 and at the lower pocket section 44 provided at locations that overlap the single-dot dashed lines a (or locations in their vicinity).

[0060] In the side airbag 20 , the one with the straps 30 , 32 As provided in the present exemplary embodiment, sagging sections sometimes occur. 34A2 , 34B2 in places of one side section 34A and the other side section 34B of the basic cloth 34 which are positioned closer to the top and bottom of the bag body than the straps 30 , 32 (see Fig. 10) Thus, during the manufacture of the side airbag 20 the areas of the base cloth 34 , where the sagging sections 34A2 , 34B2occur, sewn together at the overhang seam sections S51, S52, which run along the direction from top to bottom of the bag body. 24 extend. In the Fig. In the illustrated example 10, an inflation thickness B2 is applied at one point in the rear pocket section. 42 , which restrains the middle of the shoulder area S of the occupant P, by a width dimension L4 of the separating cloth 26 adjusted in the direction from front to back and from left to right. In the Fig. In the illustrated example 10, an inflation thickness W3 is applied at one point in the rear pocket section. 42 Closer to the back than the shoulder area S, adjusted by the positions of the loosely sewn sections or excess seam sections S51, S52. Thus, W3 can be set larger than W2.

[0061] Note that the overhang seam sections S51, S52 are defined on the hypothetical lines running along the direction of the pocket body. 24 extend from top to bottom, through the fold sections b (see Fig. 11) go if the sections have excess length 34A1 , 34B1 of the basic cloth 34 as in Fig. 8 are illustrated folded. In which in Fig. In example 11, the inflation thickness W2 is measured at a location in the rear pocket section. 42 , which restrains the middle of the shoulder area S of the occupant P, by the width dimension L4 of the separating cloth 26 adjusted from front to back and from left to right. In the Fig. In example 11, the inflation thickness W3 is measured at a point in the rear pocket section. 42, which is closer to the back than the shoulder area S2, is adjusted by the positions of the overhang seam sections S51, S52. Thus, W3 can be set larger than W2.

[0062] The gas generator 22 The present exemplary embodiment is a cylinder-type gas generator formed in a circular cylindrical shape. The gas generator 22 is in the river regulation section 26A accommodated, with its axial direction running along the direction of the backrest 16 It is oriented from top to bottom. A pair of upper and lower screw bolts. 58 stand from outer circumferential sections of the gas generator 22 towards the inside in the direction of the vehicle width (towards the inside in the direction of the seat width). The screw bolts 58 pierce through the river regulation section 26A and the bag body 24 and pierce through a side frame 17A a backrest frame17 , which is a frame part of the backrest 16 is, and nuts 60 are applied to the front ends of the screw bolts 58 unscrewed. The gas generator 22 This is combined with the side airbag 20 on the side frame 17A fastened and fixed (which is referred to as fastening to the side surface). Note that a setup can be used in which the screw bolts 58 from outer circumferential sections of the gas generator 22 protrudes towards the rear of the vehicle, through the river regulation section 26A , the bag body 24 and holders that are attached to the side frame 17A are fastened, and with the nuts 60 are screwed together (which is referred to as fastening to a rear surface).

[0063] As in Fig. 1 illustrates the gas generator 22 electrically with a vehicle-mounted side collision ECU62 connected. A side collision sensor 64 , which detects a side collision, is electrically connected to the side collision ECU 62 connected. The side-impact ECU 62 is designed to power the gas generator 22 to operate (to activate) in a case where (the inevitability of a side collision is determined based on a signal from the side collision sensor 64 was recorded. Note that in cases where a pre-crash sensor that predicts a side collision is electrically connected to the side collision ECU. 62 is connected to the gas generator 22 It can be designed to be operated when the side collision ECU 62 a side collision was predicted based on a signal from the pre-crash sensor.

[0064] In the side airbag system 10With the setup described above, gas is emitted in radiation directions from a gas discharge port located at an upper end section or a lower end section (in this example the lower end section) of the gas generator. 22 is intended when the gas generator 22 It is operated by a circular cylindrical diffuser. 23 is located on the side of the gas outlet of the gas generator 22 attached, and gas that is expelled from the gas outlet is passed through the diffuser. 23 within the river regulation section 26A distributed upwards and downwards in the river regulation section 26A Gas distributed upwards is drawn from the upper end opening. 50 of the river regulation section 26A into the left and right chambers 46 , 48 of the rear pocket section 42 supplied (see arrow G1 in Fig. 2) In the river regulation section 26AGas distributed downwards is passed through the lower end opening. 51 of the river regulation section 26A and the check valve 28A in the lower pocket section 44 supplied (see arrow G2 in Fig. 2) Part of the left and right chambers 46 , 48 of the rear pocket section 42 The supplied gas is filtered through the left cloth 36 and on the right cloth 38 formed connecting holes 52 in the front pocket section 40 supplied, (see arrows G3 in Fig. 2 and Fig. 3) Accordingly, the bag body inflates 24 of the side airbag 20 up, unfolds towards the front of the vehicle's side support section 16A and slides between the occupant P and the door panel of the side door.

[0065] In the inflated and unfolded state of the bag body 24, namely the side airbag 20 , the front sections (front half sections) of the chest area C and the abdominal area B of the occupant P are connected by the front pocket section 40 Retained, the posterior sections (posterior half sections) of the chest area C and the abdominal area B of the occupant P are held back by the posterior pocket section 42 restrained and the lumbar region L of the occupant P is protected by the rear pocket section 44 held back. The forward extension section 42A , located at the upper section of the rear pocket section 42 It is designed to extend towards the top of the front pocket section. 40 and restrains the shoulder area S of the occupant P. In the present exemplary embodiment, the respective inflation thicknesses of a location of the rear pocket section can be 42, which holds back the shoulder area S, and one location of the rear pocket section 42 , which holds back the rear section of the chest area C, individually by changing a width dimension d and a width dimension f of the left cloth 36 and the right cloth 38 of the separating cloth 26 between front and back and between left and right as in Fig. 2 can be individually adapted.

[0066] In the side airbag 20 The internal pressures of the posterior pocket section increase. 42 and the lower pocket section 44 , which are from the gas generator 22 through the upper end opening 50 of the river regulation section 26A and the check valve 28A to be supplied at an earlier stage and at a higher pressure than the internal pressure of the anterior pocket section. 40 , which goes through the connecting holes 52is supplied with gas. When the internal pressure of the lower pocket section 44 to a predetermined value or above due to the supply of the lower pocket section 44 As the gas level rises, the check valve 28A due to the internal pressure of the lower pocket section 44 compressed (working). The flow of gas between the inside of the lower pocket section. 44 and the inside of the rear pocket section 42 This blocks or restricts the process.

[0067] After activating the check valve 28A The internal pressure of the lower pocket section increases. 44 temporarily due to a load from the occupant P, while the internal pressure of the rear pocket section 42 corresponding to the increase in internal pressure of the front pocket section 40 falls. After the internal pressure of the rear pocket section decreases. 42and the internal pressure of the front pocket section 40 Once balanced, the internal pressures of both the rear pocket section then decrease. 42 as well as the front pocket section 40 due to the gas emissions from the ventilation holes 54 Although the internal pressure of the lower pocket section 44 after the check valve has been activated 28A due to gas emissions from the ventilation hole 56 As the pressure gradually decreases, the internal pressure of the lower pocket section will decrease. 44 from the initial retention stage to a late retention stage at a higher level than that of the anterior pocket section 40 and the rear pocket section 42 retain.

[0068] The following is an explanation of a manufacturing process for the side airbag described above. 20 . Fig. 12 is a cutaway top view showing the condition of the side airbag. 20This is shown before sewing. (When manufacturing the side airbag.) 20 will be the basic cloth 34 , the left cloth 36 , the right cloth 38 , the separating cloth 28 between top and bottom and the pair of straps 30 , 32 sewn to the respective seam sections described above. More precisely, as described in Fig. 13 illustrates, in a first step, the separating cloth 28 between top and bottom, first on one side in one direction along the fold section 34F of the basic cloth 34 (the side of the lower section of the base cloth) 34 ) placed before being folded. The upper edge section of the separating cloth 28 between top and bottom, the one on the other side in the direction along the fold section 34F Once positioned, the base cloth is then attached to the upper edge seam section S1. 34 sewn together.

[0069] As in Fig. The straps are illustrated in section 14. 30 , 32 In a second process, then on both sides in a direction orthogonal to the folding section 34F on those in the direction along the fold section 34F of the basic cloth 34 middle side (the middle side of the base cloth) 34 laid in the direction from top to bottom), and the left cloth 36 and the right cloth 38 are then placed on these two sides. The front edge sections of the left cloth 36 , of the right cloth 38 , and the belts 30 , 32 , which are on the side of the folding section 34F are then positioned at the front edge seam sections S21, S22 to the base fabric 34 sewn.

[0070] Note that in cases where one of the straps 30 , 32 The other of the straps is omitted. 30 , 32It is placed on only one side instead of on the two sides described above. As in the example shown by the solid line in Fig. As illustrated in Figure 5, the sewing process at seam sections S81 and S82 is carried out before the left cloth is laid on top of each other. 36 and the right cloth 38 performed on both sides in cases where the front edge sections of the straps 30 , 32 on one side section 34A and the other page section 34B of the basic cloth 34 to be sewn to the seam sections S81, S82, which are separated from the front edge seam sections S21, S22.

[0071] As in Fig. The basic cloth is then illustrated in section 15. 34 and the separating cloth 28 in a third process from top to bottom along the fold section 34F folded and medium spacing of the left cloth 36and the right cloth 38 in the direction orthogonal to the fold section 34F They are sewn together at the middle seam section S3. When this is done, parts of one side section are 34A and the other page section 34B of the basic cloth 34 on the side that corresponds to the folding section 34F opposite, towards the side of the fold section 34F together with adjusting the straps 30 , 32 on the side opposite the fold section 34F folded back to carry out the sewing process.

[0072] As in Fig. 16 and Fig. 17 are also illustrated in the third process of placing the basic cloths 34A , 34B , which belong to the overhang sections 34A2 , 34B2 include (see Fig. 10 and Fig. 11), sewn to the overhang seam sections S51, S52. As in Fig. Figure 17 also illustrates the lower edge sections of the folded separating cloth in the third process. 28 between top and bottom, which are positioned on the side opposite the upper edge seam section S1, at the lower edge seam section 34 When this is done, the lower section edges of one side section are sewn together. 34A and the other page section 34B of the basic cloth 34 Fold back towards the upper section sides to perform the sewing operation. Note that the sequence of sewing the middle seam section S3, the overhang seam sections S51, S52, and the lower edge seam section S4 can be modified accordingly. The sewing operation of the overhang seam sections S51, S52 can be omitted.

[0073] In a fourth step, the rear edge sections of the belts are 30 , 32 on one side section 34Aand the other page section 34B of the basic cloth 34 sewn to the rear edge seam sections S61, S62. Although this is not shown in the figures, the locations of one side section are 34A and the other page section 34B of the basic cloth 34 on the side opposite the fold section 34F together with the straps 30 , 32 Folded back (opened) when this is done to perform the sewing process. Outer circumference edge sections of the folded base fabric. 34 are then attached to the outer circumferential seam section S7 together with the upper edge sections and the rear edge sections of the left cloth. 36 and the right cloth 38 sewn in. This is how the side airbag is attached. 20 complete.

[0074] Note that the sections 34A1 , 34B1 with excess length that is attached to one side section34A and the other page section 34B of the basic cloth 34 This occurs when the sewing process of the outer circumference seam section S7 is carried out, as described in Fig. 7 or Fig. 8 illustrates, to the front or back of the bag body 24 They must be folded to perform this process. As in the example in Fig. Figure 6 illustrates the rear edge sections of the straps. 30 , 32 also sewn together, if the outer circumference seam sections of the folded base cloth 34 together with the upper edge sections and the rear edge sections of the left cloth 36 and the right cloth 38 at the outer circumferential seam section S7 in cases where the rear edge sections of the straps 30 , 32 with the bag body 24 and the rear edge section of the left cloth 36 and the right cloth38 to be sewn together at the outer circumferential seam section S7.

[0075] The following is an explanation of the use and function of the first exemplary embodiment.

[0076] In the side airbag system 10 The gas generator will be built using the setup described above. 22 through the side collision ECU 62 activated and gas is supplied by the gas generator 22 in a case where the side-collision ECU 62 a side impact based on a signal from the side impact sensor 64 Recorded. From the gas generator 22 The expelled gas is carried through the upper end opening. 50 of the river regulation section 26A into the back pocket section 42 supplied, and through the lower end opening 51 of the river regulation section 26A and the check valve 28A in the lower pocket section 44supplied. Part of the contents went into the rear pocket section. 42 The supplied gas is passed through the connecting holes. 52 in the front pocket section 40 supplied. The bag body 24 , which includes the respective pocket sections 40 , 42 , 44 It is equipped with this, thereby blowing towards the front of the vehicle's side support section. 16A the backrest 16 open and unfolds. The rear pocket section 42 and the lower pocket section 44 They inflate at an earlier stage and with higher pressure than the anterior pocket section 40 They arise and unfold when this occurs.

[0077] The rear pocket section 42 is through the separating cloth 26 between front and back and between left and right into the left and right chambers 46 , 48 subdivided, and the left and right chambers 46, 48 are in the inflated and unfolded state of the bag body 24 Arranged in the direction of the vehicle's width. This allows the inflation thickness L1 of the rear pocket section to be determined. 42 in the direction of the vehicle from front to rear, smaller than the inflation thickness W1 of the rear pocket section 42 It must be adjusted in the direction of the vehicle's width. One result can be the protrusion size of the left and right chambers. 46 , 48 from the side support section 16A become smaller towards the front of the vehicle, while the original restraint performance for the occupant P is reduced by the rear pocket section 42 This can be improved. Thus, even in a case where an occupant is out of position at the front of the side support section, the system can be improved. 16A is positioned, suppressed or prevented from the left and right chambers 46 , 48, namely the rear pocket section 42 with higher pressure acting on the occupants.

[0078] In the present exemplary embodiment, the belts 30 , 32 , located on the left and right chambers 46 , 48 are intended to be in the inflated and unfolded state of the bag body 24 Tension builds up, and limits the inflation of the left and right chambers. 46 , 48 towards the front of the vehicle. Accordingly, the present exemplary embodiment can determine the protrusion size of the left and right chambers. 46 , 48 from the side support section towards the front of the vehicle. Thus, the present exemplary embodiment can suppress or prevent the rear pocket section from 42 The high pressure affects the occupant P in an unfavorable position.

[0079] The following is an explanation of the above-mentioned function using a [missing text] Fig. 18 comparative examples shown 70 In the comparative example 70 is a side airbag 72 without the straps 30 , 32 The remaining structure, however, is identical to the present exemplary embodiment. In the comparative example... 70 It will be difficult to inflate the left and right chambers. 46 , 48 towards the front of the vehicle only by using the side of the rear pocket section that is in the middle in the width direction. 42 intended separating cloth 26 to restrict (regulate) between front and back and between left and right, when the circumference of the left and right chambers 46 , 48 is set longer to provide occupant restraint performance through the rear pocket section 42to improve at an initial stage. As a result, the left and right chambers may improve. 46 , 48 as through the two-dot-dash line in Fig. 18 illustrates inflating and unfolding, and that the protrusion size of the left and right chambers 46 , 48 from the side support section 16A towards the front of the vehicle rises (see arrow L5 in Fig. 18), whereas the present exemplary embodiment can avoid such a case.

[0080] In the present exemplary embodiment, the separating cloth comprises 26 between front and rear and between left and right, in the direction of vehicle width, when the bag body is inflated and unfolded. 24 lined-up left cloth 36 and right cloth 38 , and the rear pocket section 42 is through the left cloth 36 and the right cloth 38into the left and right chambers 46 , 48 subdivided. Accordingly, the effect on the occupant in a case where the left and right chambers are divided can vary. 46 , 48 , which have inflated and unfolded, impact an occupant in an unfavorable position from the rear of the vehicle, due to the displacement of the left and right chambers 46 , 48 reduced in separate directions (of the vehicle width direction).

[0081] In the present exemplary embodiment, the front edge sections of the seams are 30 , 32 with the anterior sections of the left and right chambers 46 , 48 sewn, and the back edge sections of the seams 30 , 32 are located in the posterior sections of the left and right chambers 46 , 48sewn on. Accordingly, the present exemplary embodiment can simply determine the inflation thicknesses of the left and right chambers. 46 , 48 in the longitudinal and transverse directions of the vehicle by changing the seam positions of the front edge sections of the belts 30 , 32 compared to the anterior sections of the left and right chambers 46 , 48 and the seam sections of the rear edge sections of the straps 30 , 32 opposite the posterior sections of the left and right chambers 46 , 48 adjust.

[0082] In the present exemplary embodiment, the outer circumferential edge sections of the base cloth are 34 of the bag body 24 , along the front edge section of the bag body 24 positioned folding section 34FThe folded piece was sewn to the outer perimeter seam section S7. Additionally, the rear edge sections of the left cloth are... 36 and the right cloth 38 with the rear edge section of the bag body 24 sewn together at the outer circumferential seam section S7. Therefore, in the present exemplary embodiment, the rear edge sections of the left cloth can be 36 and the right cloth 38 with the rear edge section of the bag body 24 The outer circumferential section S7 is sewn together during the sewing process of the outer circumferential seam section S7. Accordingly, the present exemplary embodiment can reduce the number of sewing operations. In addition, the present exemplary embodiment can reduce the seam length because it is not necessary to sew the folded section. 34F of the basic cloth 34to be sewn at the outer circumferential seam section S7. Thus, the present exemplary embodiment can reduce sewing costs.

[0083] In the present exemplary embodiment, the bag body comprises 24 the separating cloth 28 from top to bottom, which includes the front pocket section 40 and the rear pocket section 42 from the lower pocket section 44 separates. Therefore, the present exemplary embodiment can individually control the internal pressures of the respective pocket sections. 40 , 42 , 44 adjust according to the load resistance at each section of the occupant P when the front sections of the chest area C and the abdominal area B of the occupant P are passed through the front pocket section 40 to be restrained, the shoulder area S and the posterior sections of the chest area C and the abdominal area B of the occupant P from the rear pocket section 42be restrained and the lumbar region L of the occupant P through the lower pocket area 44 is restrained. Accordingly, the present exemplary embodiment can improve occupant restraint performance through the side airbag. 20 improve.

[0084] In the present exemplary embodiment, the side airbag 20 with the straps 30 , 32 , located on the left and right chambers 46 , 48 The intended functions can be produced simply by carrying out the first four processes described above. Accordingly, the present exemplary embodiment can reduce the manufacturing costs of the side airbag and can perform the functions described above.

[0085] The following is an explanation of another exemplary embodiment of the present disclosure. It should be noted that the structure and operation, which are essentially the same as in the first exemplary embodiment, are given the same reference numerals, and an explanation thereof is omitted. Second exemplary embodiment

[0086] Fig. 19 is one to Fig. 2 analogous side views showing an inflated and deployed state of a side airbag 82 illustrated, which is on a vehicle side airbag device 80 as provided for in a second exemplary embodiment of the present disclosure. Fig. 20 is a split-view top view showing a state before the sewing of the in Fig. 19 illustrated side airbags 82 shows.

[0087] In the side airbag 82 will the separating cloth 28between top and bottom and the lower pocket section 44 Omitted from the first exemplary embodiment. In the side airbag. 82 the separating cloth extends 26 between front and back and between left and right the same distance as the lower edge section of the bag body 24 , and a lower edge section of the separating cloth 26 from front to back and from left to right is on the lower edge section of the base cloth. 34 sewn to the outer circumferential seam section S7. The left cloth 36 and the right cloth 38 of the separating cloth 26 The dimensions from front to back and from left to right are formed with width measurements that run from the side of the upper edge section to the side of the lower edge section of the bag body. 24 continuously increasing in size. The rest of the side airbag's structure 82 is similar to that of the side airbag 20according to the first exemplary embodiment.

[0088] If the side airbag 82 The base cloth is manufactured 34 , the left cloth 36 , the right cloth 38 and the pair of straps 30 , 32 , which in Fig. Figure 20 illustrates the process, which involves sewing the straps to the front edge seam sections S21 and S22, the middle seam section S3, the back edge seam sections S61 and S62, and the outer circumferential seam section S7. More precisely, in a first step, the straps are sewn on. 30 , 32 first on both sides in the direction perpendicular to the fold section 34F of the basic cloth 34 placed one on top of the other before being folded together, and the left cloth 36 and the right cloth 38 are then placed on these two sides. The front edge sections of the left cloth 36 , of the right cloth 38 and the belts 30 , 32, which are located on the side of the folding section 34F They are then attached to the base cloth at the front edge sections S21 and S22. 34 sewn.

[0089] Note that in cases where one of the straps 30 , 32 is omitted, and in cases where the front edge sections of the straps 30 , 32 on one side section 34A and the other page section 34B of the basic cloth 34 where the seam sections S81, S82 are sewn on, which are separated from the front edge seam sections S21, S22, the explanation is the same as that of the second process in the first exemplary embodiment.

[0090] In a second process, the base cloth 34 then along the fold section 34F folded, and the middle sections of the left cloth 36 and the right cloth 38 in the direction perpendicular to the fold section34F are sewn at the middle seam section S3 parallel to the front edge seam sections S21, S22.

[0091] In a third process, the rear edge sections of the belts are 30 , 32 then on that one side section 34A and the other page section 34B of the basic cloth 34 sewn to the rear edge seam sections S61 and S62. The outer circumferential edge sections of the folded base fabric. 34 are then attached to the outer circumferential seam section S7 together with the upper edge sections and the rear edge sections of the left cloth. 36 and the right cloth 38 sewn together. Thus, the side airbag 82 The present exemplary embodiment is thereby completely finished. Note that the rear edge sections of the straps 30, 32 in a case where the back edge seam sections S61, S62 are omitted when the outer perimeter edge sections of the folded base cloth 34 with the upper edge sections and the rear edge sections of the left cloth 36 and the right cloth 38 to be sewn together at the outer circumferential seam section S7.

[0092] The present exemplary embodiment enables essentially the same operation and function as in the first exemplary embodiment, with the exception of the function that is achieved by providing a lower pocket section. 44 on the side airbag 82 is obtained. Furthermore, in the present exemplary embodiment, the costs can be reduced even further because the design of the side airbag is 82 simpler than that of the side airbag. 20 according to the first exemplary embodiment. Additional explanation of exemplary embodiments

[0093] In each of the exemplary embodiments presented, a case has been described in which the pocket body 24 , the separating cloth 26 between front and back and between left and right and the separating cloth 28 The present invention is not limited to the following: A bag body, a separating cloth between front and back and between right and left, and a separating cloth between top and bottom can be formed from any material in cloth form (a flexible material in a layered form).

[0094] In each of the exemplary embodiments described above, a case was described in which the belts 30 , 32 are formed from a cloth material that is a base cloth 34 of the bag body 24 and the separating cloth26 The present disclosure is not limited to the following: a base fabric of a bag body or a separating fabric between front and back and between left and right. A base fabric of a bag body or a separating fabric between front and back and between left and right can be partially extended, and a strap can be constructed through the extended section.

[0095] In each of the exemplary embodiments described above, a case was described in which the separating cloth 26 between front and back and between left and right, it is structured in such a way that it is the left cloth 36 and the right cloth 38The present disclosure, however, is not limited thereto. A front-to-back and left-to-right separating cloth can be constructed such that it comprises a front-to-back separating cloth that divides a bag body into a front bag section and a back bag section, and a left-to-right separating cloth that divides the back bag section into left and right compartments. In such cases, for example, a front edge section of the front-to-back separating cloth is sewn to a middle section in the width direction (a middle section in the left-to-right direction) of the front-to-back separating cloth, and a back edge section of the left-to-right separating cloth is sewn to a back edge section of the bag body.

[0096] Various other modifications can be implemented within a scope that does not deviate from the field of the present disclosure. Obviously, the scope of protection of the present disclosure is not limited by any of the exemplary embodiments described above. QUOTES INCLUDED IN THE DESCRIPTION

[0097] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0098] JP 2012-025182 A

[0002]

Claims

[1] Vehicle side airbag device ( 10 ) with: a side airbag ( 20 ), which is within a side support section ( 16A ) a backrest ( 16 ) of a vehicle seat ( 12 ) is housed, which points towards the front (FR) of the side support section of the vehicle ( 16A ) inflates and unfolds when powered by a gas generator ( 22 ) is supplied with gas, whereby the side airbag ( 20 The following is included: a bag body ( 24 ), which is formed in a pocket shape; a separating cloth ( 26 ) between front and back and between left and right, which divides the bag body into a front bag section ( 40 ) and a rear pocket section ( 42 ) subdivided and that the rear pocket section ( 42 ) into a left chamber ( 46 ) and a right chamber ( 48) in a row along the vehicle width direction in an inflated and unfolded state of the bag body ( 24 ) subdivided; and a belt ( 30 , 32 ), which is located in at least one chamber from the left chamber ( 46 ) and the right chamber ( 48 ) is provided which absorbs a tension in the inflated and unfolded state and which limits the inflation of at least one chamber towards the front of the vehicle (FR). [2] Vehicle side airbag device according to claim 1, wherein the separating cloth ( 26 ) between front and back and between left and right a left cloth ( 36 ) and a right cloth ( 38 ) includes those which, in the inflated and unfolded state, are lined up in the direction of the vehicle's width. [3] Vehicle side airbag device according to claim 1 or claim 2, wherein: a front edge section of the belt ( 30 , 32) on a front section to which at least one chamber is sewn; and a rear edge section of the belt ( 30 , 32 ) on a rear section which has at least one chamber sewn on. [4] Vehicle side airbag device according to one of claims 1 to 3, wherein: in the bag body ( 24 ) Outer perimeter edge sections of a base cloth ( 34 ), which along a fold section ( 34F ), which is located on a front edge section of the bag body ( 24 ) is positioned, is folded, is sewn together at an outer circumferential seam section (S7); and a rear edge section of the separating cloth ( 26 ) between front and back and between left and right with a rear edge section of the bag body ( 24 ) is sewn together at the outer circumferential seam section (S7). [5] Vehicle side airbag device according to one of claims 1 to 4, further comprising a separating cloth ( 28 ) between top and bottom, which forms the bag body ( 24 ) into the front pocket section ( 40 ), the rear pocket section ( 42 ) and a lower pocket section ( 44 ) subdivided. [6] Vehicle side airbag device according to claim 2, wherein connecting holes ( 52 ) both on the left cloth ( 36 ) as well as the right cloth ( 38 ) are formed, and the connecting holes form the left chamber ( 46 ) and the right chamber ( 48 ) with the front pocket section ( 40 ) connect. [7] Vehicle side airbag device according to claim 4, wherein: a front edge section of the belt ( 30 , 32 ) on a section of the base cloth running from front to back, in the middle direction ( 34), and on a front edge section of a left cloth ( 36 ) or a right cloth ( 38 ), which is the separating cloth ( 26 ) between front and back and between left and right, is sewn to a front edge seam section (S21, S22); and a rear edge section of the belt ( 30 , 32 ) on a rear section of the base cloth ( 34 ) is sewn onto a rear edge seam section (S61, S62). [8] Vehicle side airbag device according to claim 4, wherein a front edge section of the belt ( 30 , 32 ) on the base cloth ( 34 ) is sewn to a seam section (S81, S82) that extends towards a rear edge of the bag body ( 24 ) is defined as a front edge segment (S21, S22). [9] Vehicle side airbag device according to claim 4, wherein a rear edge section of the belt ( 30 , 32) on the outer circumferential seam section (S7) on the pocket body ( 24 ) and rear edge sections of a left cloth ( 36 ) and a right cloth ( 38 ) is sewn on, which is the separating cloth ( 26 ) between front and back and between left and right. [10] Vehicle side airbag device according to claim 1, wherein a circumferential length (L2) of a region of the bag body ( 24 ), which covers the rear pocket section ( 42 ) is set so that it is longer than a length dimension (L3) of a section of the belt ( 30 , 32 ) is, which is within the left chamber ( 46 ) and the right chamber ( 48 ) is positioned. [11] Vehicle side airbag device according to claim 5, wherein overhang seam sections (S51, S52) are each attached to an upper section of the rear pocket section ( 42 ) and at the lower pocket section ( 44 ) are planned. [12] Vehicle side airbag device according to claim 1, wherein: the separating cloth ( 26 ) between front and back and between left and right the same distance as a lower edge section of the bag body ( 24 ) suffices; a lower edge section of the separating cloth ( 26 ) between front and back and between left and right on the lower edge section of the bag body ( 24 ) is sewn to an outer circumferential seam section (S7); and the separating cloth ( 26 ) between front and back and between left and right with a width dimension that runs from one side of an upper edge section to one side of a lower edge section of the bag body ( 24 ) becomes larger. [13] Manufacturing method of a side airbag ( 20 ), which is located in the vehicle's side airbag system ( 10) according to claim 4, wherein the manufacturing method for the side airbag ( 20 The following is included: Applying one or two straps ( 30 , 32 ) on one or both sides in one direction orthogonal to the fold section ( 34F ) of the base cloth ( 34 ) before folding, placing a left cloth on top ( 36 ) and a right cloth ( 38 ), which are attached to the separating cloth ( 26 ) between front and back and between left and right on both sides of the base cloth ( 34 ) are provided, and sewing of front edge sections that are on the side of the folded section ( 34F ) of the left cloth ( 36 ) and the right cloth ( 38 ) are positioned, and of one strap or of the two straps ( 30 , 32 ) with the basic cloth ( 34 ) on front edge seam sections (S21, S22); Folding the base cloth ( 34) along the fold section ( 34F ), and sewing together middle sections in a direction orthogonal to the folded section ( 34F ) of the left cloth ( 36 ) and the right cloth ( 38 ) at a central seam section (S3) that runs parallel to the front edge seam sections (S21, S22); and Sewing a back edge section of one strap or both straps ( 30 , 32 ) with the basic cloth ( 34 ) on a rear edge seam section (S61, S62) and sewing of outer circumferential edge sections of the folded base cloth ( 34 ) with upper edge sections, rear edge sections and lower edge sections of the left cloth ( 36 ) and the right cloth ( 38 ) on the outer circumferential seam section (S7). [14] Manufacturing method of a side airbag ( 20 ), which is located in the vehicle's side airbag system ( 10) according to claim 4, wherein the manufacturing method for the side airbag ( 20 The following is included: Applying one or two straps ( 30 , 32 ) on one or both sides in one direction orthogonal to the fold section ( 34F ) of the base cloth ( 34 ) before folding, placing a left cloth on top ( 36 ) and a right cloth ( 38 ), which are attached to the separating cloth ( 26 ) between front and back and between left and right on both sides of the base cloth ( 34 ) are provided, and sewing of front edge sections that are on the side of the folded section ( 34F ) of the left cloth ( 36 ) and the right cloth ( 38 ) are positioned, and of one strap or of the two straps ( 30 , 32 ) with the basic cloth ( 34 ) on front edge seam sections (S21, S22); Folding the base cloth ( 34) along the fold section ( 34F ), and sewing together middle sections in a direction orthogonal to the fold section ( 34F ) of the left cloth ( 36 ) and the right cloth ( 38 ) at a central seam section (S3) that runs parallel to the front edge seam sections (S21, S22); and Sewing together the back edge section of one strap or two straps ( 30 , 32 ), while the outer circumferential edge sections (S7) of the folded base cloth ( 34 ), the upper edge sections, the rear edge sections and the lower edge sections of the left cloth ( 36 ) and the right cloth ( 38 ) are sewn to the outer circumferential seam section (S7). [15] Manufacturing method of a side airbag ( 20 ), which is located in the vehicle's side airbag system ( 10) according to claim 5 depending on claim 4, wherein the manufacturing method for the side airbag ( 20 The following is included: Applying the separating cloth ( 28 ) between top and bottom on one side in one direction along the fold section ( 34F ) of the base cloth ( 34 ) before folding, and sewing one upper edge section of the separating cloth ( 28 ) between top and bottom, which on the other side in the direction along the fold section ( 34F ) is positioned, to the base cloth ( 34 ) on an upper edge seam section (S1); Applying one or two straps ( 30 , 32 ) on a middle side in the direction along the fold section ( 34F ) and on one or both sides in one direction orthogonal to the fold section ( 34F ) of the base cloth ( 34 ), Placing a left cloth ( 36 ) and a right cloth (38 ), which are attached to the separating cloth ( 26 ) between front and back and between left and right on both sides of the base cloth ( 34 ) are provided, and sewing of front edge sections that are on the side of the folded section ( 34F ) of the left cloth ( 36 ) and the right cloth ( 38 ) are positioned, and of one strap or two straps ( 30 , 32 ) with the basic cloth ( 34 ) on front edge seam sections (S21, S22); Folding the base cloth ( 34 ) and the separating cloth ( 28 ) between top and bottom along the fold section ( 34F ), and sewing together middle sections in a direction orthogonal to the folded section of the left cloth ( 36 ) and the right cloth ( 38) at a middle seam section (S3) that runs parallel to front edge seam sections (S21, S22), and sewing together lower edge sections that meet at one of the upper edge seam sections of the folded separating cloth ( 28 ) are positioned between the top and bottom opposite sides, at a lower edge seam section (S2); and Sewing a back edge section of one strap or two straps ( 30 , 32 ) to the base cloth ( 34 ) on a rear edge seam section (S61, S62) and sewing outer circumferential edge sections of the folded base cloth ( 34 ) to the upper edge sections and rear edge sections of the left cloth ( 36 ) and the right cloth ( 38 ) and to the outer circumferential seam section (S7). [16] Manufacturing method of a side airbag ( 20 ), which is located in the vehicle's side airbag system ( 10) according to claim 5 depending on claim 4, wherein the manufacturing method for the side airbag ( 20 The following is included: Applying the separating cloth ( 28 ) between top and bottom on one side in one direction along the fold section ( 34F ) of the base cloth ( 34 ) before folding, and sewing one upper edge section of the separating cloth ( 28 ) between top and bottom, which on the other side in the direction along the fold section ( 34F ) is positioned, to the base cloth ( 34 ) on an upper edge seam section (S1); Applying one or two straps ( 30 , 32 ) to a middle side in the direction along the fold section ( 34F ) and to one side or both sides in a direction orthogonal to the fold section ( 34F ) of the base cloth ( 34 ), Placing a left cloth ( 36 ) and a right cloth (38 ), which are attached to the separating cloth ( 26 ) between front and back and between left and right on both sides of the base cloth ( 34 ) are provided, and sewing of front edge sections that are on the side of the folded section ( 34F ) of the left cloth ( 36 ) and the right cloth ( 38 ) are positioned, and of one strap or two straps ( 30 , 32 ) with the basic cloth ( 34 ) on front edge seam sections (S21, S22); Folding the base cloth ( 34 ) and the separating cloth ( 28 ) between top and bottom along the fold section ( 34F ), and sewing together middle sections in a direction orthogonal to the folded section of the left cloth ( 36 ) and the right cloth ( 38) at a middle seam section (S3) that runs parallel to the front edge seam sections (S21, S22), and sewing together lower edge sections that meet at one of the upper edge seam sections of the separating cloth ( 28 ) are positioned between the top and bottom opposite sides, at a lower edge seam section (S4); and Sewing together the back edge section of one strap or two straps ( 30 , 32 ), while the outer circumference sections of the folded base cloth ( 34 ) to the upper edge sections and the rear edge sections of the left cloth ( 36 ) and the right cloth ( 38 ) and sewn to an outer circumferential seam section (S7).

Images