JP2009040274A - Occupant crash protection device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an occupant crash protection device capable of quickly inflating out an air bag into a cabin without damaging any one of a roof head lining and a pillar garnish. <P>SOLUTION: An upper part of the first pillar garnish 12B laps a first insertion part 23B formed on the roof head lining 19. At a rear side of the first pillar garnish 12B and at a neighborhood to the first insertion part 23B, a pair of left/right direction grooves 31B, 32B are formed on a back surface of the roof head lining 19. The left/right direction groove 31B is a groove extending in the left/right direction so as to be crossed to a longitudinal direction groove 25B and an oblique direction groove 29B and the left/right direction groove 32B is a groove extending in the left/right direction so as to be crossed to the longitudinal direction grooves 25B, 26B and the oblique direction groove 29B. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vehicle occupant protection device in which an airbag inflated and deployed by gas generated from a gas generation source is stored on the back side of a roof head lining.

  An occupant protection device including a head protecting airbag is disclosed in, for example, Patent Documents 1 and 2. In the occupant protection device disclosed in Patent Literature 1, a plurality of slits are formed at predetermined intervals in the vehicle front-rear direction at the terminal portion of the base material of the ceiling material that overlaps with the B pillar garnish. The terminal part of the base material (roof head lining) of the ceiling material is lowered in rigidity by a plurality of slits, and can be separated into strips starting from the slits. When the head protecting airbag is inflated and deployed, the strip-shaped portion of the terminal portion of the base material is individually pushed and bent toward the vehicle interior side.

In Patent Document 2, a V-groove formed on the back surface of the roof head lining so as to extend in the front-rear direction of the vehicle is disclosed in FIG. When the head protecting airbag is inflated and deployed, the end of the roof head lining is pushed and bent toward the vehicle interior side starting from the V groove.
JP 2000-198406 A JP 2001-287616 A

  However, in the configuration disclosed in FIG. 7 of Patent Document 2, since the end portion of the roof head lining is only pushed and bent toward the vehicle interior side starting from the V-groove, the pillar garnish is viewed when viewed in the front-rear direction of the vehicle. The overlapping part of the roof head lining overlaps with the pillar garnish. Therefore, there is a problem that the pillar garnish is cracked or the deployment speed of the head protecting airbag is slow.

  In Patent Document 1, the terminal portion of the base material is pushed out to the vehicle interior side without being caught by the B pillar garnish, and the head protecting airbag is smoothly inflated and deployed. However, when the airbag for protecting the head is inflated and deployed, the terminal portion of the base material is divided into a plurality of strip-shaped portions, so that the more the strip-shaped portion is subdivided, the more the fragments are scattered and the passengers are damaged. There is a possibility to give. Further, as the strip-shaped portion is subdivided, the rigidity of the strip-shaped portion is lowered, and workability at the time of assembly is deteriorated.

  An object of the present invention is to provide an occupant protection device that can quickly inflate a head protection airbag into a vehicle interior without damaging both the roof head lining and the pillar garnish.

  According to the present invention, the pillar garnish of the vehicle has a garnish frame portion extending from the vehicle interior side to the vehicle exterior side, and the roof head lining of the vehicle has an insertion portion wrapped by the pillar garnish, The garnish frame portion and the insertion portion include a front and rear lap portion and a front and rear overlap portion that overlap each other, and an airbag that is inflated and deployed by gas generated from a gas generation source is stored behind the roof head lining. The invention is directed to a vehicle occupant protection device having a bulging portion that bulges into a vehicle compartment from between the front and rear lap portions and the front and rear overlapping portions when inflated and deployed. The bulging range of the bulging portion along the side edge of the roof head lining is at least between the front side and the rear side of the pillar garnish. A lateral groove that mainly extends in the lateral direction of the vehicle within the bulging range on the one side and approaches the side edge is provided on the back surface of the roof head lining. And

  When the airbag is inflated, the roof head lining is bent and deformed from the lateral groove in the bulging range of the bulging portion of the airbag to project toward the vehicle interior side. Accordingly, the front and rear overlapping portions of the roof head lining are easily detached without being caught by the front and rear wrap portions of the pillar garnish, so that the airbag is quickly inflated into the vehicle interior.

  In a preferred example, the roof head lining has a lining frame portion that extends from the vehicle interior side to the vehicle exterior side and reaches the side edge, and the front-rear overlap portion is a part of the lining frame portion. A part of the left-right direction groove is in the lining frame portion.

When the lining frame portion is bent and deformed starting from the left and right direction groove, the front and rear overlapping portions of the roof head lining are pulled in a direction away from the front and rear wrap portions of the pillar garnish.
In a preferred example, a longitudinal groove mainly extending in the longitudinal direction of the vehicle is provided on the back surface of the roof head lining, and the lateral groove and the longitudinal groove intersect each other.

The configuration in which the front-rear direction groove and the left-right direction groove are combined so that the front-rear overlap portion of the roof head lining is more easily detached from the front-rear wrap portion of the pillar garnish.
In a preferred example, the gas inlet in the airbag is provided on one of the front side and the rear side of the pillar garnish, and the left-right groove is provided between the pillar garnish and the inlet. ing.

The configuration in which the left and right grooves are provided between the pillar garnish and the gas inlet is suitable for quickly removing the front and rear overlapping portions from the front and rear wrap portions and quickly bulging the bulging portion into the vehicle interior.
In a preferred example, a first pillar garnish and a second pillar garnish on the rear side of the first pillar garnish are provided, and the roof head lining includes a first insertion portion inserted into the first pillar garnish, A second insertion portion inserted into the second pillar garnish, and the airbag is inflated between the front and rear overlapping portions of the first insertion portion and the front and rear wrap portions of the first pillar garnish. A first bulging portion that bulges, and a second bulging portion that bulges into the vehicle interior from between the front and rear overlapping portions of the second insertion portion and the front and rear wrap portions of the second pillar garnish when inflated and deployed. The gas inlet in the airbag is provided between the first pillar garnish and the second pillar garnish, Lateral grooves are each provided between the between the first pillar garnish and said inlet, and the inlet and the second pillar garnish.

  The configuration in which left and right grooves are provided between the first pillar garnish and the gas inlet, and between the second pillar garnish and the gas inlet, both the first bulging portion and the second bulging portion to the vehicle interior. It is particularly suitable for rapid swelling.

  The present invention has an excellent effect that the airbag can be quickly inflated into the vehicle interior without damaging both the roof head lining and the pillar garnish.

Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
FIG. 1A is an inner side view of the first pillar garnish 12 </ b> A and the second pillar garnish 13 </ b> A on the right side of the vehicle 10 as viewed from the passenger compartment 11 of the vehicle 10. FIG. 1B is an outer cross-sectional view of the left first pillar garnish 12B and the second pillar garnish 13B as viewed from the outside of the vehicle 10. Reference numerals 14, 15, and 16 denote window glasses, and reference numerals 17 and 18 denote assist grips. 1A and 1B, the left side is the front side of the vehicle 10, the right side is the rear side of the vehicle 10, the upper side is the upper side of the vehicle 10, and the lower side is the lower side of the vehicle 10. In the following, the front side, the rear side, the right side, the left side, the upper side, and the lower side are the front side in the longitudinal direction of the vehicle 10, the rear side in the longitudinal direction of the vehicle 10, the right side in the lateral direction of the vehicle 10, and the lateral direction of the vehicle 10. It means the left side, the upper side in the vertical direction of the vehicle 10, and the lower side in the vertical direction of the vehicle 10.

FIG. 2 shows the back surface of the roof head lining 19 that is the interior material of the ceiling of the vehicle 10 (in other words, the surface opposite to the vehicle interior).
As shown in FIGS. 3 and 4, the left side edge 191 of the roof head lining 19 is hooked on a weather strip 30 attached to the roof side rail 35. The right side edge 192 of the roof head lining 19 is also hooked to a weather strip (not shown). The roof head lining 19 has a lining frame portion 193 that bends and extends from the vehicle interior 11 side to the left vehicle exterior to reach the side edge 191, and is bent to the right vehicle from the vehicle interior 11 side. A lining frame portion (not shown) extending outside and reaching the side edge 192 is provided.

  As shown in FIG. 2, when the vehicle mounted state of the roof head lining 19 is viewed in a plan view, the airbag device 20 </ b> A for protecting the head is provided on the back side of the terminal portion 190 </ b> A on the right side (right side of the vehicle 10) of the roof head lining 19. An inflator 21 is disposed as a gas generation source constituting the. The head protecting airbag 22 constituting the airbag device 20 </ b> A is arranged along the right side edge 192 of the roof head lining 19 in a folded state. An inflator 21 constituting an airbag device 20B is disposed on the back side of the terminal portion 190B on the left side of the roof head lining 19 (left side of the vehicle 10). The airbag 22 constituting the airbag device 20B is arranged along the left side edge 191 of the roof head lining 19 in a folded state. The high-pressure gas generated in the inflator 21 flows into the airbag 22 from the inlet 221 of the airbag 22.

  The high-pressure gas that has flowed into the airbag 22 of the airbag device 20A causes the airbag 22 to inflate and deploy as shown by a chain line in FIG. When the airbag 22 of the airbag device 20A is inflated and deployed, the airbag 22 is inflated into the vehicle interior 11 near the first pillar garnish 12A, and into the vehicle interior 11 near the second pillar garnish 13A. And a second bulging portion 223 that bulges. Similarly, when the airbag 22 of the airbag device 20B is inflated and deployed, as shown in FIG. 1B, a first bulging portion 222 that bulges into the vehicle interior 11 near the first pillar garnish 12B; As shown in FIG.1 (b), the 2nd bulge part 223 which bulges into the vehicle interior 11 beside the 2nd pillar garnish 13B is provided.

  As shown in FIGS. 1A and 2, the bulging range of the first bulging portion 222 in the airbag device 20A along the side edge 192 of the roof head lining 19 is the rear side of the first pillar garnish 12A. Is the range HA1 from the first pillar garnish 12A to the front side. The bulging range of the second bulging portion 223 in the airbag device 20A along the side edge 192 of the roof head lining 19 is a range from the front side of the second pillar garnish 13A to the middle in the front-rear direction of the second pillar garnish 13A. HA2.

  The bulging range of the first bulging portion 222 in the airbag device 20B along the side edge 191 (see FIG. 2) of the roof head lining 19 is from the rear side of the first pillar garnish 12B to the front side of the first pillar garnish 12B. This is the range HB1. The bulging range of the second bulging portion 223 in the airbag device 20B along the side edge 191 of the roof head lining 19 is a range from the front side of the second pillar garnish 13B to the middle in the front-rear direction of the second pillar garnish 13B. HB2.

  As shown in FIG.1 (b), the upper part of the 1st pillar garnish 12B is open | released upwards, and the 1st insertion part 23B formed in the terminal part 190B of the roof head lining 19 is the 1st pillar garnish 12B. It is inserted into the upper opening 121. The upper part of the second pillar garnish 13B is opened upward, and the second insertion part 24B formed in the terminal part 190B of the roof head lining 19 is inserted into the opening 131 in the upper part of the second pillar garnish 13B. . Similarly, as shown in FIG. 1 (a), the upper portion of the first pillar garnish 12A is open upward, and the first insertion portion 23A formed in the terminal portion 190A of the roof head lining 19 is the first pillar. It is inserted into the opening 121 at the top of the garnish 12A. The upper part of the second pillar garnish 13A is open upward, and the second insertion part 24A formed in the terminal part 190A of the roof head lining 19 is inserted into the opening 131 in the upper part of the second pillar garnish 13A. .

  FIG. 5 is an enlarged plan view showing a portion C of FIG. The first pillar garnish 12B includes garnish frame portions 122 and 123 that extend from the vehicle interior 11 side to the left vehicle exterior, and the first insertion portion 23B is a lining that travels from the vehicle interior 11 side to the left vehicle exterior. Part of the frame portions 231 and 232 is provided. The upper part 124 of the garnish frame part 122 and the lower part 233 of the lining frame part 231 in the first insertion part 23B overlap each other in the front-rear direction, and the upper part of the garnish frame part 123 and the lining frame part 232 in the insertion part 23B. It overlaps with the lower part of seeing in the front-rear direction. Hereinafter, the upper part 124 of the garnish frame part 122 is referred to as the front / rear wrap part 124 of the garnish frame part 122, and the lower part 233 of the lining frame part 231 in the first insertion part 23B is referred to as the front / rear overlapping part 233 of the lining frame part 231.

  6 is an enlarged plan view showing a portion D of FIG. The second pillar garnish 13B includes a garnish frame 132 that extends from the vehicle interior 11 side to the left outside of the vehicle compartment, and the second insertion portion 24B is a lining frame that extends from the vehicle interior 11 to the left vehicle interior. 241 is provided. The upper part 133 of the garnish frame part 132 and the lower part 242 of the lining frame part 241 in the second insertion part 24B overlap each other when viewed in the front-rear direction. In the following, the upper part 133 of the garnish frame part 132 is referred to as the front / rear wrap part 133 of the garnish frame part 132, and the lower part 242 of the lining frame part 241 is referred to as the front / rear overlapping part 242 of the lining frame part 241.

  The first pillar garnish 12A, the second pillar garnish 13A, the first insertion portion 23A, and the second insertion portion 24A are similar to the garnish frame portions 122, 123, 132, the front and rear wrap portions 124, 133, and the front and rear overlapping portions 233, 242. Is provided.

  As shown in FIG. 1B, a pair of longitudinal grooves 25B and 26B are formed on the back surface of the end portion 190B of the roof head lining 19 near the first pillar garnish 12B, and the second pillar garnish 13B A pair of longitudinal grooves 27B, 28B are formed on the back surface of the terminal portion 190B of the nearby roof head lining 19. The front-rear grooves 25B, 26B, 27B, 28B extend in the front-rear direction of the vehicle 10. The longitudinal grooves 25B and 26B are formed in a length from the front side of the first pillar garnish 12B to the rear side of the first pillar garnish 12B, and the longitudinal grooves 27B and 28B are formed from the front side of the second pillar garnish 13B. The second pillar garnish 13 </ b> B is formed to have a length in the middle of the front and rear.

  An oblique groove 29B is formed on the back surface of the roof head lining 19 at the rear side of the first pillar garnish 12B and in the vicinity of the first insertion portion 23B so as to intersect the longitudinal grooves 25B and 26B. The oblique groove 29B is a longitudinal groove mainly extending in the front-rear direction (that is, a groove having a length component in the front-rear direction longer than a length component in the left-right direction). As shown in FIG. 2, the oblique groove 29 </ b> B moves away from the left side edge 191 of the roof head lining 19 as it goes from the front side to the rear side.

  As shown in FIG. 1B, a pair of left and right grooves 31B and 32B are formed on the back surface of the roof head lining 19 on the rear side of the first pillar garnish 12B and in the vicinity of the first insertion portion 23B. The left-right direction groove 31B extends in the left-right direction so as to intersect the front-rear direction groove 25B and the oblique direction groove 29B, and the left-right direction groove 32B intersects the front-rear direction grooves 25B, 26B and the oblique direction groove 29B. Thus, the groove extends in the left-right direction and approaches the side edge 191. Some of the left and right direction grooves 31B and 32B are on the lining frame portion 193, and the left and right direction grooves 31B and 32B are at positions away from the side edge 191. The oblique groove 29B is also located away from the side edge 191.

  In the front side of the second pillar garnish 13B and in the vicinity of the second insertion portion 24B, a lateral groove 33B and an oblique groove 34B are formed on the back surface of the roof head lining 19. The left-right direction groove 31B extends in the left-right direction so as to intersect the front-rear direction grooves 27B, 28B and approaches the side edge 191. The oblique direction groove 34B is oblique so as to intersect the front-rear direction grooves 27B, 28B. The groove extends in the direction and approaches the side edge 191. The oblique groove 34B is a left-right groove that extends mainly in the left-right direction (that is, a groove whose length component in the left-right direction is longer than that in the front-rear direction). As shown in FIG. 2, the oblique groove 34 </ b> B approaches the left side edge 191 of the roof head lining 19 from the front side toward the rear side. A part of the oblique groove 34B is on the lining frame portion 193, and the oblique groove 34B is located away from the side edge 191.

  When viewed in the left-right direction, the left-right direction grooves 31B, 32B are provided in the bulging range HB1 of the first bulging portion 222, and the left-right direction groove 33B and the oblique-direction groove 34B are the second bulging portion 223. Is provided within the bulging range HB2. More specifically, when viewed in the left-right direction, the left-right grooves 31B and 32B are located between the inlet 221 of the airbag 22 and the front-rear overlapping portion 233 of the first insertion portion 23B, and the left-right groove 33B and the diagonal direction The groove 34B is located between the inlet 221 of the airbag 22 and the front and rear overlapping portion 242 of the second insertion portion 24B.

  As shown in FIG. 2, on the right side edge 192 side of the roof head lining 19, the longitudinal grooves 25B, 26B, 27B, 28B, the oblique grooves 29B, the lateral grooves 31B, 32B, 33B, and the oblique grooves The longitudinal grooves 25A, 26A, 27A, and 28A, the oblique grooves 29A, the lateral grooves 31A, 32A, and 33A, and the oblique grooves 34A that are the same as 34B are formed. The longitudinal grooves 25A, 26A, 27A, 28A, the oblique grooves 29A, the lateral grooves 31A, 32A, 33A, and the oblique grooves 34A are the longitudinal grooves 25B with respect to the virtual plane S that equally divides the vehicle 10 in the lateral direction. , 26B, 27B, 28B, diagonal grooves 29B, left and right grooves 31B, 32B, 33B and diagonal grooves 34B.

  When viewed in the left-right direction, the left-right direction grooves 31A, 32A are provided in the bulging range HA1 of the first bulging portion 222, and the left-right direction groove 33A and the oblique direction groove 34A are the second bulging portion 223. Is provided in the bulging range HA2.

  When high-pressure gas is supplied to the airbag 22 from the inflator 21 of the airbag device 20B, the terminal portion on the left side of the roof head lining 19 that is in front of the inlet 221 of the airbag 22 while the first inflation portion 222 is inflated. Push 190B to the vehicle interior 11 side. Moreover, the 1st bulging part 222 which expand | swells pushes the 1st insertion part 23B to the vehicle interior 11 side. The terminal portion 190B of the roof head lining 19 pushed to the vehicle interior 11 side by the first bulging portion 222 is bent and deformed starting from the longitudinal grooves 25B, 26B or the oblique grooves 29B as shown by a chain line in FIG. Detach from weatherstrip 30.

  On the rear side of the first pillar garnish 12B, the terminal portion 190B of the roof head lining 19 pushed to the vehicle interior 11 side by the first bulge portion 222 is bent starting from the left and right grooves 31B and 32B or the oblique groove 29B. Projecting to the vehicle interior 11 side while being deformed (folded state with the lateral grooves 31B and 32B or the oblique groove 29B as a valley bottom). As a result, the lining frame portion 231 of the first insertion portion 23B is pulled rearward and upward, and the front-rear overlap portion 233 is pulled upward from the opening 121 of the first pillar garnish 12B. Therefore, the first insertion portion 23B is detached from the upper portion of the first pillar garnish 12B as shown by a chain line in FIG. 4, and the first bulging portion 222 that expands is formed by the upper edge of the first pillar garnish 12B and the first insertion portion 23B. It bulges into the vehicle interior 11 from between the lower edge of the vehicle.

  Further, when high-pressure gas is supplied from the inflator 21 of the airbag device 20B to the airbag 22, the left side of the roof head lining 19 on the rear side of the inlet 221 of the airbag 22 while the second bulging portion 223 is inflated. The terminal portion 190B is pushed toward the vehicle interior 11 side. Moreover, the 2nd bulging part 223 which expand | swells pushes the 2nd insertion part 24B to the vehicle interior 11 side. The terminal portion 190B of the roof head lining 19 pushed to the vehicle interior 11 side by the second bulging portion 223 is detached from the weather strip 30 while being bent and deformed starting from the front / rear direction groove 27B or the front / rear direction groove 28B.

  On the front side of the second pillar garnish 13B, the terminal portion 190B of the roof head lining 19 pushed to the vehicle interior 11 side by the second bulging portion 223 is bent and deformed from the left and right direction grooves 33B or the oblique direction grooves 34B (left and right). (Folded state with the direction groove 33B or the oblique direction groove 34B as a valley bottom) and projecting toward the vehicle interior 11 side. As a result, the lining frame portion 241 of the second insertion portion 24B is pulled forward and upward, and the front-rear overlap portion 242 is pulled upward from the opening 131 of the second pillar garnish 13B. Therefore, the second insertion part 24B comes off from the upper part of the second pillar garnish 13B, and the second bulging part 223 that expands is formed between the upper edge of the second pillar garnish 13B and the lower edge of the second insertion part 24B. It bulges into the room 11.

  Even when the airbag 22 on the airbag device 20A side is inflated, the first insertion portion 23A is detached from the upper portion of the first pillar garnish 12A, as in the case of the first insertion portion 23B, and the case of the second insertion portion 24B. Similarly, the second insertion portion 24A is detached from the upper portion of the second pillar garnish 13A.

  In the first embodiment, the following effects can be obtained. In the following effects, the case where the airbag 22 of the airbag device 20B is inflated and deployed will be described, but the same effect can be obtained when the airbag 22 of the airbag device 20A is inflated and deployed.

  (1) When the airbag 22 of the airbag device 20B is inflated, the first bulging portion 222 that is inflated in the bulging range HB1 pushes the terminal portion 190B on the left side of the roof head lining 19 toward the vehicle interior 11 side. As a result, the terminal portion 190B of the roof head lining 19 on the rear side of the first pillar garnish 12B is deformed so as to draw the front / rear overlap portion 233 upward from the front / rear wrap portion 124 due to the presence of the left / right grooves 31B, 32B. As a result, the first insertion portion 23B of the roof head lining 19 is disengaged from the upper portion of the first pillar garnish 12B, and the first bulging portion 222 of the airbag 22 is smoothly inflated and deployed without damaging the first pillar garnish 12B. Then, it bulges into the vehicle interior 11.

  Similarly, when the airbag 22 of the airbag device 20B is inflated, the second bulging portion 223 that is inflated in the bulging range HB2 pushes the terminal portion 190B on the left side of the roof head lining 19 toward the vehicle interior 11 side. As a result, the end portion 190B of the roof head lining 19 on the front side of the second pillar garnish 13B is deformed so as to draw the front / rear overlap portion 242 upward from the front / rear wrap portion 133 due to the presence of the left / right direction groove 33B and the oblique direction groove 34B. . As a result, the second insertion portion 24B of the roof head lining 19 is disengaged from the upper portion of the second pillar garnish 13B, and the second bulging portion 223 of the airbag 22 is smoothly inflated and deployed without damaging the second pillar garnish 13B. Then, it bulges into the vehicle interior 11.

  Since the roof head lining 19 is only bent and deformed starting from the left and right grooves 31B, 32B, 33B, the oblique grooves 34B, and the front and rear grooves 25B, 26B, 27B, 28B, the roof head lining 19 is damaged. There is no.

  (2) The configuration in which a part of the left and right grooves 31B and 32B is provided on the lining frame portion 193 smoothly removes the front and rear overlapping portion 233 of the first insertion portion 23B from the front and rear wrap portion 124 of the first pillar garnish 12B. Furthermore, it is suitable for deforming the terminal portion 190B of the roof head lining 19 on the rear side of the first pillar garnish 12B.

  (3) The configuration in which a part of the oblique groove 34B is provided on the lining frame part 193 is such that the front and rear overlapping part 242 of the second insertion part 24B is smoothly removed from the front and rear wrap part 133 of the second pillar garnish 13B. This is suitable for deforming the terminal portion 190B of the roof head lining 19 on the rear side of the second pillar garnish 13B.

  (4) The configuration in which the front and rear direction grooves 25B and 26B and the oblique direction groove 29B are combined with the left and right direction grooves 31B and 32B is configured so that the front and rear wrap portions 124 of the first pillar garnish 12B This is a preferable configuration for deforming the terminal portion 190B of the roof head lining 19 on the rear side of the first pillar garnish 12B so as to smoothly remove the front-rear overlapping portion 233.

  (5) The configuration in which the left and right direction grooves 33B and the oblique direction grooves 34B are combined with the front and rear direction grooves 27B and 28B is such that the front and rear lap parts 133 of the second pillar garnish 13B overlap with the second insertion part 24B. This is a preferred configuration for deforming the terminal portion 190B of the roof head lining 19 on the front side of the second pillar garnish 13B so as to smoothly remove the portion 242.

  (6) The configuration in which the plurality of left and right grooves 31B and 32B are provided on the rear side of the first pillar garnish 12B smoothly deforms the terminal portion 190B of the roof head lining 19 on the rear side of the first pillar garnish 12B into a preferable shape. This is preferable.

  (7) The configuration in which a plurality of left and right grooves 33B and diagonal grooves 34B are provided on the front side of the second pillar garnish 13B is preferable for the terminal portion 190B of the roof head lining 19 on the front side of the second pillar garnish 13B. It is preferable for smoothly deforming the shape.

  (8) The configuration in which the inlet 221 of the airbag 22 is provided near the rear side of the first pillar garnish 12B is preferable for rapidly inflating the first bulging portion 222 in the vicinity of the first insertion portion 23B. If the first bulge portion 222 is rapidly expanded on the rear side of the first insertion portion 23B, the terminal portion 190B of the roof head lining 19 on the rear side of the first insertion portion 23B is quickly projected and deformed toward the vehicle interior 11 side. Can be made. Protruding and deforming the terminal portion 190B of the roof head lining 19 on the rear side of the first insertion portion 23B toward the vehicle interior 11 side quickly removes the first insertion portion 23B from the upper part of the first pillar garnish 12B. This is important for quickly bulging the one bulging portion 222 into the vehicle interior 11.

  The configuration in which the left and right grooves 31B and 32B are provided between the inlet 221 of the airbag 22 and the front and rear lap portions 124 of the first pillar garnish 12B quickly removes the first insertion portion 23B from the upper part of the first pillar garnish 12B. Therefore, it is suitable for quickly bulging the first bulging portion 222 into the vehicle interior 11.

  (9) The configuration in which the inlet 221 of the airbag 22 is provided near the front side of the second pillar garnish 13B is preferable for rapidly inflating the second bulging portion 223 in the vicinity of the second insertion portion 24B. If the second bulging portion 223 is rapidly expanded on the front side of the second insertion portion 24B, the terminal portion 190B of the roof head lining 19 on the front side of the second insertion portion 24B is quickly projected and deformed toward the vehicle interior 11 side. Can do. To quickly project and deform the terminal portion 190B of the roof head lining 19 on the front side of the second insertion portion 24B toward the vehicle interior 11 side, the second insertion portion 24B is quickly removed from the upper part of the second pillar garnish 13B. This is important for rapidly expanding and expanding the bulging portion 223 into the vehicle interior 11.

  The configuration in which the left and right direction grooves 33B and the oblique direction grooves 34B are provided between the inlet 221 of the airbag 22 and the front and rear wrap parts 133 of the second pillar garnish 13B is formed by connecting the second insertion part 24B from the upper part of the second pillar garnish 13B. It is preferable for quickly removing the second bulging portion 223 into the vehicle interior 11 by quickly removing it.

  (10) Left and right grooves 31B and 32B are provided between the inlet 221 of the airbag 22 and the front and rear wrap portions 124 of the first pillar garnish 12B, and the front and rear wrap portions of the inlet 22 of the airbag 22 and the second pillar garnish 13B The configuration in which the left and right direction grooves 33B and the oblique direction grooves 34B are provided between the first and second bulged portions 33B and 133 is particularly suitable for rapidly bulging both the first bulging portion 222 and the second bulging portion 223 into the vehicle interior 11. is there.

  (11) The configuration in which the left and right direction grooves 31B, 32B, and 33B and the oblique direction groove 34B are provided at positions away from the side edge 191 of the roof head lining 19 is formed in the left and right direction grooves 31B, 32B, and 33B and the oblique direction groove 34B. It is preferable for preventing cracks from occurring.

In the present invention, the following embodiments are also possible.
O Only one lateral groove may be provided on the rear side of the first pillar garnish 12B, 12A.

O You may provide only one left-right direction groove | channel on the front side of 2nd pillar garnish 13B, 13A.
O Three or more left and right grooves may be provided on the rear side of the first pillar garnish 12B, 12A.

O Three or more left and right grooves may be provided on the front side of the second pillar garnish 13B, 13A.
O The left-right direction groove | channel similar to the left-right direction groove | channel 31B, 32B may be provided also in the front side of 1st pillar garnish 12B, 12A.

The technical idea that can be grasped from the embodiment described above will be described below.
[1] The vehicle occupant according to any one of claims 1 to 5, wherein the lateral groove is provided at a position away from a side edge of the roof head lining in the lateral direction of the vehicle. Protective device.

  [2] A plurality of the left-right grooves are provided at intervals in the front-rear direction on one of the front side of the wrap portion and the rear side of the wrap portion. The vehicle occupant protection device according to any one of the above items.

The 1st Embodiment is shown and (a) is a partially fractured inner side view. (B) is a partial expanded side sectional view. The top view which shows the back surface of the roof head lining 19. FIG. The AA line expanded sectional view of Drawing 1 (b). The BB line expanded sectional view of Drawing 1 (b). The C section enlarged plan view of FIG. The D section enlarged plan view of FIG.

Explanation of symbols

  10: Vehicle. 11 ... Inside the car. 12A, 12B ... 1st pillar garnish. 122, 123 ... Garnish frame. 124: Front and rear lap parts. 13A, 13B ... 2nd pillar garnish. 132: Garnish frame. 133: Front and rear lap parts. 19 ... Roof headlining. 191 192 ... side edge. 193: Lining frame. 20A, 20B ... Airbag device. 21 ... An inflator as a gas generation source. 22 ... Airbag. 221 ... Entrance. 222: First bulging portion. 223 ... 2nd bulging part. 23A, 23B ... 1st insertion part. 234, 242 ... Front and rear overlapping portions. 24A, 24B ... 2nd insertion part. 25A, 25B, 26A, 26B, 27A, 27B, 28A, 28B ... grooves in the front-rear direction. 29A, 29B: Diagonal grooves that are longitudinal grooves. 31A, 31B, 32A, 32B, 33A, 33B... 34A, 34B... Diagonal grooves that are longitudinal grooves. HA1, HB1, HA2, HB2 ... bulging range.

Claims (5)

The pillar garnish of the vehicle has a garnish frame portion extending from the vehicle interior side to the vehicle exterior side, and the roof head lining of the vehicle has an insertion portion wrapped by the pillar garnish, and the garnish frame portion The insertion portion includes a front and rear lap portion and a front and rear overlap portion that overlap each other, and an airbag that is inflated and deployed by gas generated from a gas generation source is stored on the back side of the roof head lining, In the occupant protection device for a vehicle, the airbag has a bulging portion that bulges into a vehicle compartment from between the front and rear lap portion and the front and rear overlapping portion when inflated and deployed.
The bulging range of the bulging portion along the side edge of the roof head lining is also provided on at least one of the front side and the rear side of the pillar garnish, and within the bulging range in the one side, An occupant protection device for a vehicle, wherein a lateral groove that mainly extends in a lateral direction of the vehicle and approaches the side edge is provided on a back surface of the roof head lining.   The roof head lining has a lining frame portion extending from the vehicle interior side to the vehicle exterior side to reach the side edge, and the front-rear overlapping portion is a part of the lining frame portion, and the left-right groove The occupant protection device for a vehicle according to claim 1, wherein a part of the vehicle is located in the lining frame portion.   The front-rear direction groove mainly extending in the front-rear direction of the vehicle is provided on the back surface of the roof head lining, and the left-right direction groove and the front-rear direction groove intersect each other. The vehicle occupant protection device according to claim 1.   2. The gas inlet of the airbag is provided on one of a front side and a rear side of the pillar garnish, and the left-right groove is provided between the pillar garnish and the inlet. The vehicle occupant protection device according to any one of claims 3 to 3.   A first pillar garnish; and a second pillar garnish on the rear side of the first pillar garnish, wherein the roof head lining includes a first insertion portion inserted into the first pillar garnish, and a second pillar garnish. A second insertion portion to be inserted, and the airbag is inflated into a vehicle compartment from between a front and rear overlapping portion of the first insertion portion and a front and rear wrap portion of the first pillar garnish when inflated and deployed. The airbag comprising: a bulging portion; and a second bulging portion that bulges into a vehicle compartment from between a front and rear overlapping portion of the second insertion portion and a front and rear wrap portion of the second pillar garnish when inflated and deployed. The gas inlet is provided between the first pillar garnish and the second pillar garnish, and the lateral groove is 4. The vehicle occupant protection device according to claim 1, wherein the vehicle occupant protection device is provided between the first pillar garnish and the entrance and between the second pillar garnish and the entrance. 5. .

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