JP5491332B2 - Passenger airbag - Google Patents

Description

  The present invention relates to a passenger seat airbag.

  The airbag for the passenger seat expands and deploys the airbag chamber in the event of a frontal collision of the vehicle, and restrains the center of the chest and the head of the passenger on the passenger seat from the front of the passenger. It is used for the purpose of securing. As a passenger seat airbag, a single chamber type airbag device in which one chamber is inflated and deployed, or a twin chamber type in which two chambers are inflated and deployed to more easily restrain an occupant than a single chamber type. An airbag apparatus has been proposed.

  The twin-chamber type airbag device is configured such that two chambers are inflated and deployed on both the left and right sides of the rear side of the airbag facing the occupant, and the two chambers are raised. . The two raised chambers restrain the vicinity of the left and right shoulders of the occupant, and the occupant's head enters the receiving recess between the two raised chambers.

  As a twin-chamber type airbag device in which a housing recess is formed to receive the passenger's head by intruding, a grooved airbag (see Patent Document 1) has been proposed. The grooved airbag described in the patent document is configured as follows in order to form a storage recess that allows a passenger's head to enter and receive.

  That is, an outer panel that becomes a cushion part when contacting the occupant, left and right side panels that are connected to the left and right side edges of the outer panel, and a vertical opening formed in the center of the outer panel A central groove panel having both ends connected to the upper and lower sides of the opening, and a right panel and a left panel connecting both side edges of the central groove panel and both side edges of the opening, respectively. And, it has a configuration comprising.

  In order to prevent the storage recess formed by the right panel, the center groove panel, and the left panel from expanding beyond the outer surface of the main panel when the airbag is inflated and deployed, that is, the center groove panel A tether belt (referred to as a connecting portion in Patent Document 1) that keeps the central groove panel inside the airbag so as to maintain the bottom surface of the housing recess is provided in the airbag.

JP 2007-112427 A

  The grooved airbag described in Patent Document 1 requires a left and right panel and a central groove panel in order to form a storage recess. Therefore, not only the number of parts of each panel constituting the airbag becomes large, but also the work of assembling each panel by sewing becomes complicated. As a result, it is difficult to reduce the manufacturing cost of the passenger airbag.

In addition, since the center groove panel is connected to the inside of the airbag by the tether belt that extends straight, the center groove panel tends to fluctuate in the left-right direction when the passenger seat airbag is inflated and deployed. Both side surfaces of the center groove panel will also change in the left-right direction. If it becomes like this, it will become difficult to make a passenger | crew's head penetrate | invade correctly in a center groove panel, for example.

  The invention of the present application solves such problems, reduces the number of parts of the panel constituting the twin-chamber type passenger airbag, and stabilizes the storage recess that allows the head of the passenger to enter with a simple configuration. It is an object of the present invention to provide an airbag for a passenger seat that can be formed in a state, and as a result, can reduce manufacturing costs.

The object of the present invention can be achieved by the inventions described in claims 1 to 4.
That is, the present invention is an airbag for a passenger seat having an upper surface portion, a lower surface portion, and an occupant surface portion, wherein an upper and lower opening is formed at a central portion in the left-right width direction, and the upper surface portion and the lower surface portion are formed. The opening is closed by the occupant surface portion having a plurality of ridges formed along the vertical direction, and the occupant surface portion has a lateral width at both upper and lower edge portions of the opening when the airbag is inflated and deployed. It is attached to the opening so that the lateral dimension on the center side in the vertical direction is wider than the dimension,
At least one end portion of the outer belt is provided on the outer surface of the center portion in the left-right direction of the occupant surface portion. The side is configured to expand toward the end, and both ends in the vertical direction of the outer belt are respectively attached to the passenger seat airbag,
The most main feature is that the central portion of the occupant surface portion in the vertical direction bulges in the left-right direction from both side edges of the outer belt when the airbag is inflated and deployed.

  The main feature of the present invention is that a portion of the outer belt is attached to a portion of the center portion in the left-right direction of the occupant surface portion that does not include the flange.

  Furthermore, the main feature of the present invention is that the shape of at least one end portion of the outer belt is formed into a bifurcated hem shape.

  Furthermore, in the present invention, the outer belt is configured in an inverted Y shape, and one end of the outer belt divided into two forks is attached to the lower end in the vertical direction of the passenger seat airbag. The passenger seat airbag portion between the two legs divided into the hem-spread shape has a main feature in that a pocket that opens downward when the passenger seat airbag is inflated and deployed is formed. .

  In the present invention, a plurality of vertical folds are formed on an occupant surface portion that closes an opening formed between the upper surface portion and the lower surface portion. Note that the heel is a portion of a broken line when folded. In addition, an outer belt is attached to the outer surface of the center portion in the left-right direction of the occupant surface portion, and at least one end portion side of the outer belt is configured so as to expand toward the end. And the both ends in the up-down direction of the said outside belt are set as the structure attached to the said passenger seat airbag, respectively.

  The upper and lower end edges of the occupant surface portion are connected to the upper surface portion and the lower surface portion together with the heel, and the left and right end edges of the occupant surface portion are connected to the upper surface portion and the lower surface portion so that the heel portion is not sewn together. It is connected. The occupant surface is connected to the periphery of the opening formed between the upper surface and the lower surface, thereby closing the opening with the occupant surface.

  With this configuration, when the airbag is inflated and deployed, the lateral width dimension on the center portion side in the vertical direction can be made wider than the lateral width dimension at the upper and lower end portions of the occupant surface portion. When the airbag is inflated and deployed, the occupant surface portion swells so as to swell from an opening formed between the upper surface portion and the lower surface portion, and in particular, the center portion side in the vertical direction is greatly swelled.

  Even if the center side in the up-and-down direction of the occupant surface portion is greatly swelled, the outer side belt is arranged along the up-and-down direction on the outer side surface of the occupant surface portion. Will be regulated by. And since the space | interval of the upper side and lower side in the said opening part is controlled by an outer side belt, the swelling in the center part side of the passenger | crew surface part bulged from the said opening part bulges from the both-sides edge of an outer side belt. Will do.

  In addition, since at least one end portion of the outer belt is configured to have a flared shape, it is possible to reliably prevent the position at the center portion of the occupant surface portion regulated by the outer belt from changing in the left-right direction. That is, since the outer belt is attached to the passenger seat airbag by at least the end portion and the other end portion that are formed to spread out from the bottom, the fixing range of the outer belt can be set wide. Further, when the passenger seat airbag is inflated and deployed, the outer belt is subjected to a pulling force in the left-right direction at the end portion formed in the shape of the hem, and between the both end portions of the outer belt, A pulling force will act.

  As described above, the outer belt is pulled in the left-right direction and the up-down direction as the passenger seat airbag is inflated and deployed, so that the position at the center of the occupant surface portion is changed in the left-right direction by the outer belt. It can be surely regulated. As the end configuration as the hem-spreading shape, it may be configured to be divided into two forks so as to have a skirt-spreading shape.

  In the present invention, the two chambers are constituted by the occupant surface portions bulged from both side edges of the outer belt, and the outer belt can reliably prevent the two chambers from fluctuating from side to side. The left and right shoulders of the occupant on the passenger seat can be restrained by the two chambers that are correctly bulged from both side edges of the outer belt. In addition, the head of the occupant can enter and be received in the recess between the two chambers formed by the regulation of the outer belt.

  Further, the amount of bulge that is bulged from both side edges of the outer belt can be adjusted as appropriate by setting the number of longitudinal folds formed on the occupant surface and the width of the overlapping portion depending on the folds. . Furthermore, regarding the depth of the storage recess to be received by receiving the head of the occupant and the lateral width of the storage recess, the width and length of the outer belt can be adjusted and the lateral width shape of the outer belt in the vertical direction can be adjusted. Alternatively, by adjusting the bulging amount of the occupant surface portion bulged from both side edges of the outer belt, or by appropriately combining these adjustments, the desired state can be adjusted.

  As vertical folds (folds) formed on the occupant surface portion in the present invention, the upper and lower sides of the opening formed between the upper surface portion and the lower surface portion as the amount of expansion of the occupant surface portion when the airbag is inflated and deployed As long as the amount of expansion on the center side in the vertical direction of the opening can be larger than the amount of expansion in FIG.

If the width dimension on the center side in the vertical direction of the occupant surface portion is configured to be large, the bulge amount of the occupant surface portion that bulges from both side edges of the outer belt can be increased. Thus, the shape of the two chambers formed by bulging from the both side edges of the outer belt can be appropriately set according to the vehicle layout and the size of the airbag.

  The outer belt in the present invention is configured to regulate the outer side of the airbag by connection such as sewing, whereas the tether belt in the above-described patent document is configured to draw the central groove panel from the inner side of the airbag. . For this reason, the outer belt in the present invention can be easily attached to the airbag as compared with the tether belt in Patent Document 1, and does not need to be configured to have high rigidity unlike the tether belt in Patent Document described above.

  Regarding the method for attaching the outer belt to the airbag in the present invention, it can be carried out by sewing, sticking with an adhesive, or sewing and sticking with an adhesive.

  The outer belt can be attached to a part of the outer belt that does not include the heel of the occupant surface portion. By configuring in this way, it is possible to more reliably restrict the position of the passenger surface portion at the center portion in the left-right direction by the outer belt.

  The width shape of the outer belt can be configured to be approximately the same as the width of the occupant's head, or can be set to an appropriate width shape as necessary. The length of the outer belt can be appropriately set according to the position of the housing recess formed by the outer belt and the bulged portion of the occupant surface that bulges from both side edges of the outer belt.

  In this way, the storage recess can be configured with the recess and the side surface of the storage recess being firmly held in shape, so that when the occupant's head enters the storage recess, the occupant's head Does not rub against the sides. Moreover, the storage recess can be formed with a simple configuration. In addition, the manufacturing operation of the passenger airbag is not complicated, and as a result, the manufacturing cost of the passenger airbag can be reduced.

  In the present invention, a pocket that opens downward when the passenger airbag is inflated and deployed can be formed at the bifurcated portion of the outer belt configured in an inverted Y shape. By configuring in this way, for example, when the airbag for the passenger seat is inflated and deployed, the top portion of the infant seat fixed backward to the passenger seat can be stored in the pocket. Obstacles such as the top can be protected smoothly.

  In addition, since the pocket is divided into two parts, the pocket position can be prevented from moving in the left-right direction when the passenger airbag is inflated and deployed.

FIG. 3 is an exploded assembly view of a passenger airbag. Example 1 FIG. 3 is a perspective view, a top view, and a cross-sectional view showing a passenger seat airbag during inflation and deployment. Example 1 It is a bottom view of the airbag for passenger seats which expanded and expanded. Example 1 It is a perspective view which shows the arrangement | positioning relationship between the airbag for passenger seats which expand | deployed and expand | deployed and a passenger | crew. Example 1 It is a perspective view which shows the modification of an outer side belt. Example 1 FIG. 7 is a perspective view showing a state before the passenger seat airbag is deployed and assembled, and a sectional view showing another example of folding of the passenger surface portion. Example 1 It is the perspective view which looked at the airbag for front passenger seats at the time of inflation deployment from the bottom face side. (Example 2)

  Preferred embodiments of the present invention will be specifically described below with reference to the accompanying drawings. As the configuration of the passenger seat airbag according to the present invention, in addition to the shape and configuration described below, if the shape and configuration can solve the problems of the present invention, those shapes and configurations should be adopted. It is something that can be done. For this reason, this invention is not limited to the Example demonstrated below, A various change is possible.

  FIG. 1A is a development view of an upper surface portion 2, an occupant surface portion 3, and a lower surface portion 4 constituting the passenger seat airbag 1. FIG. FIG. 1B shows a perspective view before assembling the upper surface portion 2, the occupant surface portion 3, and the lower surface portion 4, and FIG. 1C shows a state in which the upper surface portion 2, the occupant surface portion 3, and the lower surface portion 4 are assembled. FIG. 3 is a perspective view showing an outer belt 5 attached thereto. FIG. 1 (d) shows a pair of right and left chambers 11 that are inflated when the passenger seat airbag 1 is inflated and deployed, a left chamber 12, and a storage recess that receives and receives the head of the passenger. It is a perspective view.

  FIG. 2A shows the same perspective view as shown in FIG. 1D, and FIG. 2B shows a top view of the passenger seat airbag 1. FIG. 2C shows a cross-sectional view taken along the line AA in FIG.

  The passenger airbag 1 is made of a non-breathable flexible material, for example, an upper surface portion 2, an occupant surface portion 3 and a lower surface portion 4 composed of a nylon base fabric panel coated with rubber on the inside. Is constructed by stitching.

  The passenger seat airbag 1 is folded and stored in an instrument panel in front of the passenger seat of the vehicle, and gas injected from an inflator (not shown) at the time of a frontal collision of the vehicle or when a collision is predicted. Thus, the vehicle is inflated and deployed so as to cover the entire surface on the rear side of the vehicle, that is, on the front side of the passenger in the passenger seat, and the passenger can be restrained from the front.

  As shown in FIG. 1, the passenger seat airbag 1 includes an upper surface portion 2, an occupant surface portion 3, a lower surface portion 4, and an outer belt 5 for forming a recess for receiving the occupant's head by entering. It becomes the composition.

  As shown in FIG. 1A, the upper surface portion 2 includes a rear edge 2a connected to the lower surface portion 4, and a part of a side edge of the opening 6 formed between the upper surface portion 2 and the lower surface portion 4. And a shape surrounded by a side edge 2b and an upper side 2c which is the upper side of the opening 6. In addition, vent holes 7 for exhausting excess inflation gas when the airbag is inflated are opened on the left and right sides.

  The lower surface portion 4 includes a rear end edge 4a that is connected to the rear end edge 2a of the upper surface portion 2, and a side edge portion 4b that is a part of the side edge of the opening 6 formed between the upper surface portion 2 and the lower surface portion 4. And a shape surrounded by a lower side portion 4c which is a lower side of the opening 6. In addition, a gas introduction port 8 for introducing gas from an inflator (not shown) into the airbag is opened to the rear end edge 4a side of the central portion.

  In addition, although the structural example which comprises the panel part of the left and right side surfaces by the upper surface part 2 and the lower surface part 4 is illustrated, the left and right side panels are configured separately from the upper surface part 2 and the lower surface part 4. You can also.

  The occupant surface 3 is a panel that closes the opening 6 formed between the upper surface 2 and the lower surface 4 when the rear edge 2a of the upper surface 2 and the rear edge 4a of the lower surface 4 are connected. It is configured as. When forming the opening 6, the refracting parts from the left and right ends of the upper side 2c are connected to the opposing side edge 2b, and the refracting parts from the left and right ends of the lower side 4c are connected to the opposing side edge 4b. ing.

  The width dimension of the upper end edge 3a and the lower end edge 3c of the occupant surface part 3 is configured to be wider than the width dimension of the upper side part 2c and the lower side part 4c. Further, the interval between the side edge 3b of the occupant surface portion 3 is configured to be wider than the width dimension at the upper edge 3a and the lower edge 3c. It should be noted that the distance between the side edges 3b of the occupant surface portion 3 and the width dimensions at the upper edge 3a and the lower edge 3c can be configured as the same dimension.

  And as shown in FIG.1 (b), the passenger | crew surface part 3 shortens the width dimension of the passenger | crew surface part 3, and closes the opening part 6 by forming the part 16 which overlapped with the vertical hook 16a. The upper surface 2 and the lower surface 4 are connected to each other. Note that the heel 16a is a portion of a broken line when folded.

  That is, as shown in FIG. 1 (c), the occupant surface 3 can be connected to the opening 6 between the upper surface 2 and the lower surface 4 by forming the overlapping portion 16 by the flange 16a. it can. At this time, the upper end edge 3a and the lower end edge 3c of the occupant surface portion 3 are connected to the upper side portion 2c of the upper surface portion 2 and the lower side portion 4c of the lower surface portion 4 from above the portion 16 overlapped by the flange 16a. Further, each side edge 3b of the occupant surface 3 is connected to the left and right side edges of the opening 6 constituted by the side edge 2b of the upper surface 2 and the side edge 4b of the lower surface 4 respectively. Become.

When the side edges 3b of the occupant surface 3 are connected to the left and right edges of the opening 6, respectively, the ridges formed on the occupant surface 3 are connected so as not to be sewn to the left and right edges of the opening 6. It will be.
With this configuration, when the passenger seat airbag 1 is inflated and deployed, the occupant surface portion 3 can be inflated from the opening 6.

  As shown in FIG.1 (c), the connection between the upper surface part 2, the passenger | crew surface part 3, and the lower surface part 4 is performed by sewing. In FIG.1 (c), the sewing part 15 is shown with the dotted line. Further, a reinforcing member (not shown) is attached around the vent hole 7 by a sewing portion 15. The periphery of the gas introduction port shows a configuration in which a reinforcement member (not shown) is attached by a fixing means such as a rivet, but a configuration in which a reinforcement member (not shown) is attached around the gas introduction port by a sewing unit 15 is used. You can also

  As shown in FIG. 1 (c), when the passenger airbag 1 is inflated and deployed, the occupant surface 3 forms two chambers, a right chamber 11 and a left chamber 12, so that the occupant surface 3 The outer belt 5 is arranged along the vertical direction on the outer surface of the central portion.

  The outer belt 5 is divided into a bifurcated end 5b and 5d at the lower end, and the upper end 5a and the lower end 5b and 5d are an upper surface 2 and a lower surface, respectively. It is connected to each part 4. Further, the central portion 5c of the outer belt 5 is connected to the central portion of the occupant surface portion 3 so as not to connect the flanges 16a formed on the occupant surface portion 3 together.

  As a method of connecting the outer belt 5 to the upper surface portion 2, the lower surface portion 4 and the occupant surface portion 3, a connection method by sewing, a connection method by adhesion using an adhesive, sewing and adhesion using an adhesive, It is also possible to perform a connection method using both of the above. FIG. 1 (d) shows a state in which the central portion 5 c of the outer belt 5 is connected to the passenger surface portion 3 by the sewing portion 15.

The length dimension of the outer belt 5 is defined by both end portions 5a, 5b, 5d of the outer belt 5, and the lower end side of the outer belt 5 is an end portion that is bifurcated into a hem as shown in FIG. The fixed range of the outer belt 5 can be set wide by 5b and 5d. Further, the end portions 5b and 5d on the lower end side of the outer belt 5 are pulled in the left-right direction as the passenger seat airbag 1 is inflated and deployed. The upper end side end portion 5a and the lower end side end portions 5b and 5d are pulled in the vertical direction as the passenger seat airbag 1 is inflated and deployed.

  As a result, the storage recess 13 that receives and receives the head of the occupant is regulated by the outer belt 5, and the two chambers, the right chamber 11 and the left chamber 12, do not shake from side to side.

  Accordingly, the occupant surface portion 3 bulged from the opening 6 can be bulged outward from both the left and right sides of the outer belt 5 while being regulated by the outer belt 5. As shown in FIG. 2A, the right chamber 11 and the left chamber 12 that support the left and right shoulders of the occupant can be formed by the occupant surface portions 3 bulging from the left and right sides of the outer belt 5.

  In addition, as shown in FIGS. 2B and 2C, a storage recess 13 can be formed between the right chamber 11 and the left chamber 12 for receiving and receiving the head of the passenger. The width of the storage recess 13 can be adjusted by the width of the outer belt 5, and when the occupant's head enters the storage recess 13, the occupant's head is located between the side surfaces 13a and 13b of the storage recess 13. It can be configured not to rub.

  The outer belt 5 has a bifurcated start position at a position in contact with the lower surface 4d of the passenger seat airbag 1, from a central portion of the outer belt 5, or at an upper portion of the outer belt 5. It may be from a site. When the start position of bifurcation is the central portion of the outer belt 5 or the upper portion of the outer belt 5, the passenger face portion 3 is regulated by the left and right sides of the outer belt 5 that gradually becomes wider depending on the bifurcated portion. However, the occupant surface 3 can be bulged outward from the left and right sides of the outer belt 5.

  Thus, as shown in FIG. 3, when the passenger seat airbag 1 is inflated and deployed, the occupant surface portion 3 bulging from the left and right sides of the outer belt 5 further inflates, The right chamber 11 and the left chamber 12 can be formed. At this time, both end portions 5a, 5b, 5d of the outer belt 5 are attached to the upper surface portion 2 and the lower surface portion 4, respectively, and the opening belt 6 is restricted by the outer belt 5 from spreading in the vertical direction. Can do.

  In addition, since a part of the center portion 5c of the outer belt 5 is attached to the occupant surface portion 3, it is possible to prevent the occupant surface portion 3 from bulging from only one side of the outer belt 5. As a result, the inflated occupant surface 3 can bulge from both sides of the outer belt 5, and the right chamber 11 and the left chamber 12 can be formed.

  Thus, since the present invention is configured, as shown in FIG. 4, the passenger seat airbag 1 is inflated and deployed, so that the passenger seat airbag 1 is accommodated from within the instrument panel. It protrudes upward to project between the upper surface of the instrument panel and the windshield 23, and protrudes toward the occupant 20 seated on the seat 21 to protect the occupant 20 with the backrest 21a. It will be.

  The left and right shoulders of the occupant 20 seated on the seat 21 are supported by the right shoulder restraint portion 11a and the left shoulder restraint portion 12a, and the head of the occupant 20 is between the right shoulder restraint portion 11a and the left shoulder restraint portion 12a. It can be received in a correct posture in the formed storage recess 13.

As shown in FIG. 5A, the outer belt 5 has a configuration in which end portions 17a and 17b formed in a flared shape are formed at both ends of the outer belt 17, as shown in FIG. 5B. Both ends of the outer belt 18 are formed in a bifurcated shape, and the bifurcated end portions 18a and 18b and the bifurcated end portions 18c and 1
A configuration in which 8d is formed can also be used.

  By using the outer belt 17 or the outer belt 18 configured as described above, both ends of the outer belt 17 or the outer belt 18 are pulled in the left-right direction as the passenger seat airbag 1 is inflated and deployed. . The two chambers of the right chamber 11 and the left chamber 12 do not shake from side to side, and the storage recess 13 is formed in combination with the vertical tension between the both ends of the outer belt 17 or the outer belt 18. Can do.

  The occupant surface 3 that closes the opening 6 formed by the upper surface 2 and the lower surface 4 has a portion 16 that overlaps with a flange 16a at the center in the vertical direction of the occupant surface 3 as shown in FIG. One is formed. The overlapping portion 16 may be disposed so as to face the inside of the passenger seat airbag 1 as shown in FIG. 6 (b), or the passenger seat airbag as shown in FIG. 6 (d). It can also be arranged to face the outside of 1.

  In addition, the number of ridges 16a formed at the center in the vertical direction of the occupant surface 3 may be four as shown in FIG. 6 (b) or eight as shown in FIG. 6 (c). You can also. 6B to 6D are cross-sectional views taken along the line BB in FIG. 6A.

  Furthermore, the number of ridges 16a can be formed so as to be an arbitrary even multiple. Even when the number of 襞 16a is an arbitrary even number, the overlapping portion 16 by 部分 16a may be arranged so as to face the inside of the passenger airbag 1. It can also arrange | position so that it may face the outer side.

  As shown in FIG. 1C, the passenger seat airbag 1 of the present invention has the same shape as that of the single-chamber airbag device when the occupant surface portion 3 is not inflated from the opening 6. Yes. That is, in a state where the occupant surface portion 3 does not bulge from the opening 6, the two chambers are not configured. Thus, as shown in Patent Document 1, the invention is different from the invention in which the two chambers are formed before the passenger seat airbag is inflated.

  In the passenger seat airbag 1 according to the second embodiment of the present invention, the lower surface of the passenger seat airbag 1 on the lower end side in the vertical direction, that is, as shown in FIG. 26 is formed, and the opening 26 is closed by a pocket panel 24 in which a plurality of left and right ridges 25 are formed. The pocket panel 24 in which a plurality of left and right ridges 25 are formed is sewn to the lower surface portion along the edge of the opening 26 while the ridges 25 are formed.

  Since other configurations are the same as the configurations in the first embodiment, the same reference numerals as those used in the first embodiment are used for the same components, and the description of the members is omitted. To do.

  In the initial state of inflation and deployment of the passenger seat airbag 1, when no external force is applied to the pocket panel 24, the passenger seat airbag 1 is positioned on substantially the same surface as the lower surface 4d of the lower surface portion 4. When an external force is applied to the pocket panel 24 in the initial state of inflation and deployment of the passenger seat airbag 1, the central portion of the pocket panel 24 is recessed inward by the external force. Thus, it is possible to form a pocket that is easily deformed and opened downward.

For example, when a child seat fixed rearward is present in the passenger seat, the upper seat portion of the child seat that becomes an obstacle when the passenger seat airbag 1 is inflated and deployed is pressed downward from above by the pocket. Can be wrapped. Thus, since a part of the obstacle can be received in the pocket formed on the bottom surface of the passenger airbag 1, the impact on the obstacle is suppressed, and the instrument panel and the passenger airbag 1 No obstacles are sandwiched between the two, and protection can be performed with a reduced obstacle value.

  A partial region of the pocket formed on the lower surface 4d of the lower surface portion 4 is surrounded by the bifurcated end portions 5b and 5d of the outer belt configured in an inverted Y shape, so that the passenger seat airbag 1 It is possible to prevent the position of the pocket from moving in the left-right direction at the time of inflating and expanding by the bifurcated ends 5b and 5d of the outer belt.

  In addition, when the passenger seat airbag 1 is inflated and deployed to the maximum, a pocket opened downward by the pocket panel 24 is formed between the back surface side of the pocket panel 24 and the back surface side of the upper surface portion 2. Can be connected by a tether having a desired length.

  The present invention can be suitably applied to an airbag device.

DESCRIPTION OF SYMBOLS 1 ... Airbag for passenger seats, 2 ... Upper surface part, 3 ... Passenger surface part, 4 ... Lower surface part, 5 ... Outer belt, 5a ... End part, 5b, 5d ... -End part, 6 ... opening, 11 ... right chamber, 12 ... left chamber, 13 ... storage recess, 16a ... saddle, 17 ... outer belt, 17a, 17b ... -End part, 18 ... outer belt, 18a, 18b, 18c, 18d ... bifurcated end part, 24 ... pocket panel, 25 ... collar, 26 ... opening.

Claims (4)

A passenger seat airbag having an upper surface portion, a lower surface portion and an occupant surface portion,
Form an opening in the vertical direction at the center in the left-right width direction, the upper surface and the lower surface are connected,
The opening is blocked by the occupant surface portion having a plurality of ridges formed along the longitudinal direction;
The occupant surface portion is attached to the opening so that the width dimension at the center side in the vertical direction is wider than the width dimension at the upper and lower end edges of the opening when the airbag is inflated and deployed.
The outer surface of the center portion in the left-right direction of the passenger surface portion is configured to be shorter than the circumferential length of the passenger seat airbag, and an outer belt disposed along the vertical direction is attached.
At least one end portion side of the outer belt is configured to spread toward the end, and both end portions in the vertical direction of the outer belt are respectively attached to the passenger seat airbag,
A passenger-side airbag, wherein a portion on a central portion side in the vertical direction of the occupant surface portion inflates and expands in the left-right direction from both side edges of the outer belt.   2. The passenger seat air according to claim 1, wherein a part of the outer belt is attached to a part of the center part in the left-right direction of the occupant surface part that does not include the heel. bag.   3. The passenger seat airbag according to claim 1, wherein a shape of at least one end portion of the outer belt is formed in a bifurcated hem shape. 4.   The outer belt is configured in an inverted Y shape, and one end of the outer belt divided into two forks is attached to a lower end side in the vertical direction of the passenger seat airbag, 4. The passenger seat air according to claim 3, wherein a pocket that opens downward when the passenger seat airbag is inflated and deployed is formed in a portion of the passenger seat airbag between the divided two forks. bag.

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