JP2010214977A - Interior structure of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an interior structure of a vehicle including a seat arranged on a side of a side door of the vehicle, and a side airbag which is inflated and deployed on the side door side of the seat when the predetermined condition is established to protect a predetermined portion of a seated occupant, and for adequately protecting the seated occupant while suppressing an increase of the size of the side airbag even when a recess is formed at a part forming a side of the predetermined portion of the seated occupant on an inner surface of the side airbag. <P>SOLUTION: A recess 20a is recessed outward of a vehicle formed on a part forming a side of a predetermined portion of a seated occupant X on an inner surface 20 of a side door 1. An inflation regulating member 50 for regulating the inflation and deployment in the vertical direction than the predetermined value is provided on a side airbag 41 so as to promote the inflation and deployment in the vehicle width direction at the side of the recess 20a. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an interior structure of a vehicle having a side airbag for inflating and deploying on a side door side of a seat to protect a predetermined part of a seated occupant when a predetermined condition is satisfied.

  Conventionally, as a structure for protecting an occupant seated on a seat disposed on the side of a side door of a vehicle from an impact such as a side collision of another vehicle on the side door, a foamed resin material is provided in the internal space of the side door. A structure in which an impact absorbing member made of, for example, is disposed is known. For example, the impact absorbing member is disposed at a position on the side of a predetermined portion (for example, a waist or a chest) of a seated occupant in the internal space of the side door. Further, as other than the impact absorbing member, Patent Document 1 includes a structure including a side airbag for inflating and deploying on the side door side of the seat to protect a predetermined part of a seated occupant when a predetermined condition is satisfied. It is disclosed.

International Publication No. WO2002 / 100691

  By the way, conventionally, the inner surface of the side door of the vehicle may be provided with a recess such as a storage pocket that is recessed on the vehicle exterior (internal space side) so that various small items can be accommodated. Thus, when the shock absorbing member is disposed in the internal space of the side door, the portion that overlaps the shock absorbing member in a side view on the inner surface of the side door, that is, the portion that is lateral to the predetermined portion of the seated occupant on the inner surface of the side door In this case, it was not possible to form a recess recessed outside the vehicle. However, if the side airbag as described in Patent Document 1 is provided, it is possible to eliminate or reduce the size of the impact absorbing member, and as a result, the predetermined portion of the seated occupant on the inner surface of the side door of the vehicle. It is possible to form a recess also in the side portion. That is, the storage space in the vehicle compartment can be expanded.

  However, in this case, the following problems may occur. That is, when a recess is formed in a part of the inner surface of the side door of the vehicle that is to the side of the predetermined part of the seated occupant, the distance between the predetermined part of the seated occupant and the side wall of the recess is increased. As a result, for example, when the conventional side airbag is used as it is, the airbag is not recessed when a predetermined portion of the seated occupant comes into contact with the side airbag due to insufficient thickness of the deployed side airbag in the vehicle width direction. There is a possibility that the impact may not be sufficiently absorbed by deformation and displacement so as to enter inside. That is, there is a possibility that the seated occupant cannot be properly protected.

  As a countermeasure, it is conceivable to increase the size of the side airbag. In this case, there is a problem that not only the gas generation capacity of the inflator has to be increased, but also the deployment time of the airbag becomes longer.

  Therefore, the present invention appropriately protects the seated occupant while suppressing the enlargement of the side airbag as much as possible even when a recess is provided in a portion of the inner surface of the side door that is lateral to the predetermined portion of the seated occupant. It is an object of the present invention to provide an interior structure of a vehicle that can perform the above.

  In order to solve the above-described problems, the present invention is configured as follows.

  First, the invention according to claim 1 of the present application relates to a seat disposed on the side of a side door of a vehicle, and a predetermined portion of a seated occupant that is inflated and deployed on the side door side of the seat when a predetermined condition is satisfied. A vehicle interior structure provided with a side air bag for protection, wherein a concave portion recessed outside the vehicle is provided at a portion of the inner surface of the side door that is lateral to the predetermined portion of the seated occupant. The side airbag is provided with an inflation regulating member that regulates the inflation and deployment of a predetermined amount or more in the vertical direction so as to promote inflation and deployment in the vehicle width direction on the side of the recess. To do.

  According to a second aspect of the present invention, in the interior structure of the vehicle according to the first aspect, the side airbag is for protecting a waist of a seated occupant.

  According to a third aspect of the present invention, in the interior structure of the vehicle according to the second aspect, the inner surface of the side door extends in the front-rear direction of the vehicle body along the upper edge of the recess and protrudes toward the inner side of the vehicle. An armrest is provided, and the side airbag is configured so as to be in an inflated state at a position lateral to the recess and lower than the armrest.

  According to a fourth aspect of the present invention, in the interior structure of the vehicle according to the third aspect, the seat occupant is inflated and deployed at a position higher than the armrest on the side door side of the seat when the predetermined condition is satisfied. A second side airbag for protecting the chest of the vehicle is provided.

  According to a fifth aspect of the present invention, in the vehicle interior structure according to the fourth aspect, the side airbag and the second side airbag are obtained by dividing a single airbag vertically. It is formed, The division position is set so that it may become the height position of an armrest in a deployment state.

  According to a sixth aspect of the present invention, in the vehicle interior structure according to the fourth or fifth aspect, the inflator that supplies the gas for inflation and deployment to each side airbag is shared by both airbags. And the length of the gas supply passage to the side airbag for protecting the occupant's waist is shorter than the length of the gas supply passage to the second side airbag. And

  According to a seventh aspect of the present invention, in the vehicle interior structure according to the first to sixth aspects, the side airbag is attached at a position higher than the concave portion of the side door and faces downward. By being supplied with gas, it is configured to be inflated and deployed downward from the attachment position, and the inflation regulating member is formed by a tether that extends substantially vertically in the side airbag in an inflated and deployed state. In the inflated and deployed state of the side airbag, the tether has an upper end at the upper end of the side airbag and a lower end in the vehicle width direction as seen in the vehicle longitudinal direction from the lower end of the side airbag. It is characterized by being joined to the inner part.

  According to an eighth aspect of the present invention, in the vehicle interior structure according to any one of the first to seventh aspects, the side airbag protects the waist of the seated occupant. The seat is a driver seat or a passenger seat, and is configured to be slidable back and forth, and the recessed portion corresponds to a range of back and forth movement of a seated occupant's waist when the seat is slid back and forth. The depth of the concave portion is such that the position at the side of the waist of the seated occupant when the seat is slid forward is the side of the waist of the seated occupant when the seat is slid backward. It is characterized by being shallower than the position to be.

  Next, the effect of the present invention will be described.

  According to the first aspect of the present invention, when a predetermined condition is satisfied, a side airbag for protecting a predetermined part of the seated occupant is inflated and deployed on the side door side of the seat. In this case, in the present invention, when the side airbag is inflated and deployed, the inflation regulating member restricts the inflation and deployment in a vertical direction beyond a predetermined level, and the side airbag is inflated and deployed in the vehicle width direction. Is promoted. Therefore, the thickness of the side airbag (the length in the vehicle width direction) becomes larger than the case where there is no expansion regulating member, and the side airbag that is inflated and deployed easily enters the recess before contacting the seated occupant. As a result, when the occupant comes into contact with the side airbag, the airbag is prevented from being greatly displaced to the outside of the vehicle, and the occupant is well received. That is, it becomes possible to properly protect the occupant. In addition, since the inflation and restriction member restricts the expansion and deployment of a predetermined amount or more in the vertical direction, an increase in the size of the side airbag is also avoided. As described above, according to the present invention, even when a recessed portion that is recessed toward the outside of the vehicle is provided on a side of the predetermined portion of the seated occupant on the inner surface of the side door, the seating can be performed while suppressing an increase in the size of the side airbag as much as possible. Crew can be properly protected.

  According to the invention described in claim 2, the waist portion of the seated occupant is protected by the side airbag. The height position of the waist of the seated occupant is the height position where the front end of the other vehicle is often located at the time of a side collision of the other vehicle to the side door. However, according to the present invention, the occupant can be well protected while the recess is provided at such a height position. In particular, at the position corresponding to the waist of the seated occupant, the side air bag is quickly inflated and deployed to secure a space by the side air bag between the side door and the occupant entering the vehicle interior due to the collision and sitting. Although it is important to give the occupant an urging force to move to the inside of the vehicle to quickly protect the waist, the present invention can also satisfy this. Furthermore, the height position of the waist is also a position where there is a great demand for installation of a recess such as an article storage pocket, but this can also be satisfied.

  Incidentally, there is a case where it is desired to provide an armrest on the inner surface of the side door that extends in the longitudinal direction of the vehicle body and protrudes toward the inside of the vehicle. However, it is necessary to consider interference with the side airbag in an inflated and deployed state.

  Therefore, in the invention according to claim 3, the armrest is provided along the upper edge of the concave portion on the inner surface of the side door, and the side airbag is inflated at a position lateral to the concave portion and lower than the armrest. According to this, even when an armrest is provided, interference with the inflated side airbag is avoided.

  Further, according to the invention described in claim 4, it is possible to protect the chest of the seated occupant by the second side airbag. In this case, since the second side airbag is configured to be inflated and deployed at a position higher than the armrest, it is avoided that the inflation and deployment is inhibited by the armrest.

  According to the invention described in claim 5, since the side airbag and the second side airbag are formed by dividing a single airbag up and down, the side airbag and There is no need to separately manufacture and dispose the second side airbag, and the manufacturing cost can be reduced and disposition can be improved. Here, when configured with a single airbag as described above, interference between the armrest and both airbags may be a concern, but in the present invention, the partition positions of both airbags are in the deployed state. The height of the armrest is set so that the thickness of the single airbag is smaller than the upper and lower portions at the height of the armrest. Interference is avoided and good deployability of both airbags is ensured.

  According to the invention described in claim 6, since the inflator that supplies the gas for inflating and deploying to each side airbag is shared by both airbags, the manufacturing cost can be reduced and the disposition can be improved. The improvement effect will be obtained more remarkably. Moreover, since the length of the gas supply passage to the side airbag for protecting the occupant's waist is shorter than the length of the gas supply passage to the second side airbag, the waist is protected. Gas is preferentially supplied to the side airbag, and the waist, which is the most important protection site, can be preferentially protected.

  According to the seventh aspect of the present invention, the side airbag is mounted at a position higher than the recess of the side door, and gas is supplied downward to inflate downward from the mounting position. Will be deployed. The inflating restricting member is configured by a tether that extends substantially in the vertical direction inside the inflated and deployed side airbag, and in the inflated and deployed state of the side airbag, the tether has an upper end on the side. Since the lower end of the airbag is joined to the inner side in the vehicle width direction when viewed from the vehicle longitudinal direction with respect to the lower end of the side airbag, the tether has a substantially vertical direction when the side airbag is deployed. It tries to be in a state of being taut with tension. Therefore, a force is exerted on the side airbag so that the lower side rotates toward the side door with the upper side as the center, and as a result, the side airbag rotates and moves toward the recess. Therefore, after the seated occupant comes into contact with the side airbag, the situation where the side airbag moves to the side door side is further suppressed.

  By the way, the driver's seat is often configured to be slidable back and forth so that good driving is possible regardless of the size of the seated occupant. In addition, the passenger seat is often configured to be slidable back and forth to ensure comfort. Accordingly, it is desirable to provide a recess for storage or the like corresponding to the range of front and rear movement of the waist of the seated occupant when the driver's seat is slid back and forth so that the seated occupant can easily put in and out the article.

  Here, a small occupant has a lower waist width (vehicle width direction) than an occupant having a standard physique, and as a result, the gap between the concave portion and the side wall portion tends to increase. On the other hand, the width of the side airbag (in the vehicle width direction) is a substantially fixed width. Therefore, in the case of a small occupant, the amount of movement in the vehicle width direction until it comes into contact with the side airbag is increased, and there is a possibility that the vehicle is likely to receive an impact. Here, when the small occupant is seated in the driver's seat, the seat is slid forward to grip the steering wheel, and when seated in the passenger seat, the instrument panel in front of the seat is In many cases, the seat is slid forward for easy operation.

  Therefore, in the invention according to claim 8, when the seat is a driver seat or a passenger seat and is configured to be slidable back and forth, the depth of the recess is slid forward. The position on the side of the waist of the seated occupant at that time is shallower than the position on the side of the waist of the seated occupant when slid backward. That is, the depth of the concave portion on the front side that is likely to be on the side of the waist of a small occupant is reduced. According to this, it can suppress that the space | interval of a small passenger | crew and the side wall part of a recessed part becomes large. That is, even in the case of a small occupant, impact absorption by the side airbag can be sufficiently performed.

It is the side view which looked at the interior structure of the vehicle which concerns on embodiment of this invention from the vehicle inner side. It is AA sectional drawing of FIG. 1 (In addition, about the sheet | seat, it represents with a front view instead of sectional drawing). FIG. 2 is a view corresponding to FIG. 1 in a state where the airbag is inflated and deployed (the vehicle body and the like are indicated by virtual lines). FIG. 3 is a view corresponding to FIG. 2 in a state where the airbag is inflated and deployed (the vehicle body and the like are indicated by virtual lines). It is a side view of an air bag simple substance. It is a side view of the airbag simple substance in the interior structure of the vehicle which concerns on 2nd Embodiment. It is a side view of the airbag simple substance in the interior structure of the vehicle which concerns on 3rd Embodiment. It is a side view of the air bag simple substance in the interior structure of the vehicle which concerns on 4th Embodiment. It is a figure equivalent to FIG. 2 in the interior structure of a vehicle in 4th Embodiment. (A) Drawing: It is the figure (a figure) equivalent to FIG. 1 in the interior structure of a vehicle in 5th Embodiment. (B) Drawing: It is BB sectional drawing of (a figure).

  Embodiments of the present invention will be described below.

  FIG. 1 is a side view of a front portion of a vehicle to which a vehicle interior structure according to the present invention is applied. A side door 1 for passenger entry / exit is provided on the side of the vehicle body. A seat 2 for seating an occupant is disposed on the side of the side door 1. FIG. 1 shows an example of the right front side door and the right front seat.

  As shown in FIG. 2, the side door 1 includes a hollow door main body 10 made of a metal inner panel 11 and an outer panel 12, and the door main body 10 above the door main body 10 via a drive mechanism (not shown). The side window glass 13 is disposed so as to be housed therein, and a resin door trim 20 that constitutes a vehicle inner surface (inner surface) of the side door 1. On the lower side of the space between the inner panel 11 and the outer panel 12, a small impact absorbing member 14 having a relatively small thickness is disposed.

  As shown in FIGS. 1 and 2, the door trim 20 includes a door trim body 21 having a substantially rectangular opening 21a extending in the front-rear direction of the vehicle body at a lower portion thereof, and covers the opening 21a of the trim body 21 from the outside of the vehicle. And a lid-like member 22 having a shape bulging outward. And in the site | part in which this opening 21a was formed, the recessed part 20a dented on the vehicle outer side is formed by the door trim main body 21 and the lid-shaped member 22 as the door trim 20 whole. Here, the concave portion 20a constitutes a storage portion that can store small articles and the like, and is disposed at a height position of a waist portion of the occupant X seated on the seat 2.

  In addition, a portion of the door trim body 21 above the opening 21a is recessed toward the vehicle exterior, thereby forming an armrest 20b that extends in the longitudinal direction of the vehicle body along the upper edge of the recess 20a and bulges toward the vehicle interior. Has been.

  The seat 2 includes a seat back 31 and a seat cushion 32, and is slidable in the longitudinal direction of the vehicle body via the slide mechanism 33 and the like so as to be able to perform a good driving regardless of the physique of the seated occupant. It is supported by.

  Here, in the present embodiment, the side airbag device 40 is built in the upper right portion of the seat back 31 of the seat 2. The side airbag device 40 includes a side airbag 41 accommodated in a folded state, an inflator 42 that generates gas when an initiation signal is input, and supplies the gas to the airbag 41, and a side collision detection sensor that detects a side collision. (Not shown) and a controller (not shown) that outputs an initiation signal to the inflator 42 when a side collision detection signal is input from the side collision detection sensor, and when a side collision occurs In addition, gas is generated from the inflator 42 and supplied to the airbag 41, and the airbag 41 is configured to be inflated and deployed on the side door 1 side of the seat 2 as shown in FIGS. Note that the side airbag 41 is attached to the seat back frame 31F and appears outside the seat back 31 by breaking the sewing portion 31X on the side of the seat back 31.

  As shown in FIG. 5, the airbag 41 before folding has a shape in which the front side of the intermediate portion in the vertical direction is constricted, and is formed by overlapping two cloths and sewing the outer periphery. A sewing portion 41h that divides the airbag 41 in the vertical direction is provided at a substantially intermediate height position in the vertical direction of the airbag 41. The lower side of the sewing portion 41h is inflated and deployed on the side of the waist of the occupant X. Thus, a waist protection portion 41a for protecting the occupant X's waist is configured, and the chest portion for protecting the chest of the occupant X by inflating and deploying the upper side of the sewing portion 41h above the waist protection portion 41a. The protection unit 41b is configured. Here, as is clear from FIGS. 3 and 4, the partition position is set to be the height position of the armrest 20 b of the door trim 20 in the unfolded state, whereby the waist protection portion 41 a The chest protector 41b is inflated and deployed at a position higher than the armrest 20b.

  Further, as shown in FIG. 5, the inflator 42 is accommodated in the rear part inside the chest protection part 41b of the airbag 41 and is shared by the chest protection part 41b and the waist protection part 41a. More specifically, the gas ejection port 42a is disposed substantially rearward of the sewing section 41h for the upper and lower sections, and ejects gas substantially downward. Further, the airbag 41 is fixed to the frame 31F of the seat back 31 at a position higher than the recess 20a of the side door 1 together with the rear end portion of the chest protection portion 41b of the airbag 41 in a folded state.

  Here, as is apparent from FIG. 1, the concave portion 20 a has a shape extending in the longitudinal direction of the vehicle body, but its rear portion reaches the waist side of the seated occupant X. This is because the side airbag 41 is provided. That is, by providing the side airbag 41, the shock absorbing member 14 on the side of the waist can be reduced in size as described above (thinner thickness in the vehicle width direction is reduced). It is possible to form a recess also in a portion on the side of the waist of the seated occupant X. According to this, the storage space around the side door 1 can be increased. Here, the seat 2 is configured to be slidable back and forth as described above, and the recess 20a is provided corresponding to the range of front and rear movement of the waist of the seated occupant X when the driver's seat 2 is slid back and forth. It has been.

  Further, in the present embodiment, as shown in FIGS. 3 to 5, the side airbag 41 is moved in the vertical direction so as to promote inflation and deployment in the vehicle width direction on the side of the recess 20 a. An expansion regulating member 50 that regulates the expansion and expansion beyond a predetermined level is provided.

  More specifically, the expansion regulating member 50 is configured by a tape-shaped tether that is extended in a substantially vertical direction inside the side airbag 41 in the deployed state, and the direction of the perpendicular of the tether surface is substantially the vehicle width direction. Has been. The tether has an upper end fixed to a sewing portion 41h at the upper end of the waist protection portion 41a and a lower end fixed to a sewing portion (not shown) at the lower end of the waist protection portion 41a.

  Next, functions and effects of the interior structure according to the present embodiment will be described.

  For example, when a side collision of another vehicle occurs on the side portion of the host vehicle, a side collision is detected by a side collision detection sensor, gas is generated from the inflator 42, and the gas is supplied to the side airbag 41. As shown in FIGS. 3 and 4, the bag 41 is inflated and deployed on the side door 1 side of the seat 2. In this case, in the present embodiment, when the waist protection portion 41a (side airbag in the claims) is inflated and deployed, the inflation regulating member 50 regulates the inflation or deployment in a vertical direction more than a predetermined amount. Expansion and deployment in the vehicle width direction on the side of the recess 20a is promoted. Therefore, the thickness of the waist protection portion 41a (length in the vehicle width direction) becomes larger than the case where the expansion regulating member 50 is not provided, and the waist protection portion 41a that is inflated and deployed is in the recess 20a before contacting the seated occupant. As a result, when the occupant X comes into contact with the waist protection portion 41a, the waist protection portion 41a is prevented from being greatly displaced to the outside of the vehicle, and the occupant X is well received. . That is, the occupant X can be appropriately protected. In addition, since the inflation regulating member 50 regulates the expansion and deployment of a predetermined amount or more in the vertical direction, an increase in the size of the side airbag 41, particularly an increase in the size of the waist protection portion 41a is avoided. . As described above, according to the present embodiment, the side airbag 41 can be enlarged even when the recess 20a that is recessed toward the outside of the vehicle is provided in a portion of the door trim 20 of the side door 1 on the side of the predetermined portion of the seated occupant X. It is possible to appropriately protect the lower back of the occupant X while suppressing as much as possible.

  Here, the height position of the waist portion of the seated occupant X is a height position where the front end portion of the other vehicle is often located at the time of a side collision of the other vehicle to the side door 1, and therefore, the most demanding of protection. However, according to the present embodiment, the occupant X can be well protected while the recess 20a is provided at such a height position. In particular, at the position corresponding to the waist of the seated occupant, the waist protector 41a is rapidly expanded and deployed, so that a space by the waist protector 41a is formed between the side door 1 and the seated occupant X entering the vehicle interior due to a collision. It is important to secure the occupant X and provide the seating occupant X with an urging force to move toward the inside of the vehicle to quickly protect the waist, but the present invention can also satisfy this. Further, the height position of the waist is also a position where the installation requirement of the recess 20a such as the article storage pocket is large, but this can be satisfied.

  By the way, when providing the armrest 20b which extends in the vehicle body front-back direction and protrudes in the vehicle interior in the door trim 20 of the side door 1, it is necessary to consider interference with the side airbag 41 in an inflated state.

  Therefore, in the present embodiment, the armrest 20b is provided along the upper edge of the recess 20a in the door trim 20 of the side door 1, and the waist protection part 41a of the side airbag 41 is disposed on the side of the recess 20a. According to this structure, the armrest 20b is inflated at a position lower than the armrest 20b. Even when the armrest 20b is provided, interference with the waist protection portion 41a of the inflated side airbag 41 is avoided. The Rukoto.

  It is also possible to protect the chest of the seated occupant X by the chest protection part 41b of the side airbag 41 (second side airbag in the claims). In that case, since the chest protection part 41b is configured to be inflated and deployed at a position higher than the armrest 20b, it is avoided that the expansion and deployment is inhibited by the armrest 20b.

  Moreover, since the waist protection part 41a and the chest protection part 41b are formed by dividing the single airbag 41 vertically, the waist protection part 41a and the chest protection part 41b are individually set as a single airbag. There is no need to manufacture and dispose, and it is possible to reduce the manufacturing cost and improve disposition. Here, in the case of such a configuration, there may be a concern about interference between the armrest 20b and the two protection portions 41a and 41b, but in the present embodiment, the partition positions of the two airbags 41 are deployed. Since the armrest 20b is set to be at the height position in the state, interference between the armrest 20b and the two protection portions 41a and 41b is avoided, and good deployability of both the protection portions 41a and 41b is ensured. It becomes.

  In addition, since the inflator 42 that supplies gas for inflating and deploying to the chest protection part 41b and the waist protection part 41a of the side airbag 41 is shared by the chest protection part 41b and the waist protection part 41a, the manufacturing cost is reduced. The effect of improving disposition is further enhanced.

  Next, a second embodiment will be described. In addition, when referring to the same or similar components as those in the first embodiment, description will be made using the same reference numerals. The same applies to other embodiments thereafter.

  As shown in FIG. 6, in the second embodiment, the inflator 42 is configured so that the gas outlet 42a is located in the waist protection part 41a below the sewing part 41h in the rear part inside the side airbag 41. Are accommodated in a substantially vertical direction. Other configurations are the same as those in the first embodiment.

  According to the second embodiment, as is apparent from FIG. 6, gas is ejected into the waist protection part 41a and supplied to the chest protection part 41b via the waist protection part 41a. . That is, since the gas is preferentially supplied to the lower back protection section 41a and the lower back protection section 41a is preferentially inflated and deployed, in addition to the effects of the first embodiment, the most important protection site Can be preferentially protected.

  Next, a third embodiment will be described.

  As shown in FIG. 7, in the third embodiment, the rear portion of the side airbag 41 is formed of a cloth material, and the upper end is opened in the chest protection part 41b and the lower end is opened in the waist protection part 41a. A cylindrical diffuser 51 extending in a substantially vertical direction is attached, and an inflator 42 is accommodated in the diffuser 51 in a substantially vertical direction. The diffuser 41 constitutes a gas supply passage that communicates with the chest protection part 41b and the waist protection part 41a. In that case, the inflator 42 is disposed downward so that the gas outlet 42a is positioned in the vicinity of the lower end of the diffuser 41. As a result, as shown in FIG. 7, the gas supply to the waist protection portion 41a is provided. The passage length of the passage is shorter than the passage length of the gas supply passage to the chest protector 41a. Further, the rear end of the partitioning sewn portion 41 h is connected to the front end of the diffuser 51. Other configurations are the same as those in the first embodiment.

  According to the third embodiment, in addition to the effects of the first embodiment, the length of the gas supply passage to the waist protection portion 41a for protecting the waist of the occupant X is reduced to the chest protection portion 41b. Therefore, the gas is preferentially supplied to the waist protection section 41a, and the waist that is the most important protection site can be protected preferentially. In addition, since the diffuser 51 is provided and the rear end of the partitioning sewing portion 41h is connected to the front end of the diffuser 51, the independence of the waist protection portion 41a and the chest protection portion 41b is increased, and the gas pressure is set to a predetermined value. It becomes easy to set the pressure.

  In addition, the gas pressure of the waist protection part 41a is not less than a predetermined pressure (pressure when the waist protection part 41a is in an inflated and deployed state capable of protecting the occupant) between the chest protection part 41b and the waist protection part 41a. A check valve may be provided that can allow gas to flow into the chest protection part 41b when it is discharged. By doing so, the gas pressure on the waist protection part 41a side is prevented from becoming too high, and after the waist protection part 41a is in an inflated and deployed state (after reaching a predetermined pressure), the chest protection part 41b is promptly used. Can be inflated and deployed.

  Next, a fourth embodiment will be described.

  As shown in FIG. 8, in the fourth embodiment, in the first embodiment, the lower end of the expansion regulating member 50 is two on the vehicle inner side and the vehicle outer side constituting the side airbag 41. Of these fabric materials, the upper side of the fabric material 41A on the vehicle interior side is sewn. In other words, the lower end of the expansion regulating member 50 is joined closer to the inner side in the vehicle width direction when viewed in the vehicle longitudinal direction than the lower end of the waist protection portion 41a. Other configurations are the same as those of the third embodiment.

  According to the fourth embodiment, when gas is ejected downward from the inflator 42 into the side airbag 41 as indicated by an arrow γ, the waist protection portion 41a of the side airbag 41 is inflated and deployed. The expansion regulating member 50 (tether) tends to be in a state where it is tightly tensioned in a substantially vertical direction. Therefore, a force is exerted on the lower side of the waist protection part 41a of the side airbag 41 to rotate toward the side door 1 as shown by the arrow δ in FIG. 9 with the upper side as the center. As a result, the waist protection part 41a rotates and moves to the recess 20a side of the door trim 20. Therefore, after the seated occupant X comes into contact with the waist protection portion 41a of the side airbag 41, the situation where the waist protection portion 41a moves to the side door 1 side is further suppressed.

  Next, a fifth embodiment will be described.

  As shown in FIGS. 10A and 10B, in the fifth embodiment, in the first embodiment, the recess 20a of the door trim 20 of the side door 1 moves forward and backward in the driver seat 2. It is provided so as to correspond to the longitudinal movement range of the waist of the seated occupant X when it is slid (this is the same in the first to fourth embodiments). This is to make it easier for the seated occupant X to put in and out the article in the recess 20a for storage or the like.

  By the way, the small occupant X ′ has a lower waist width (in the vehicle width direction) than the occupant X having a standard physique, and as a result, the interval between the recess 20a and the side wall 22a tends to be large. On the other hand, the width of the side airbag 41 (in the vehicle width direction) is a substantially fixed width. Therefore, in the case of a small occupant X ′, the amount of movement in the vehicle width direction until it comes into contact with the side airbag increases, and there is a risk that it will be susceptible to impact. Here, when the small occupant X 'is seated on the driver's seat, the seat 2 is often slid forward in order to grasp the steering wheel.

  Therefore, in the present embodiment, the depth of the recessed portion 20a of the door trim 20 is the same as that when the portion on the side of the waist of the seated occupant X when the driver's seat 2 is slid forward is slid backward. It is shallower than the side portion of the waist of the seated crew member X. That is, a bulging portion 22b toward the inside of the vehicle is formed at a portion on the side of the waist of the seated occupant X when the driver's seat 2 is slid forward in the side wall portion 22a of the recess 20a of the door trim 20. The bulging portion 22b is inclined so that the rear side is located on the vehicle outer side. This is because the occupant's physique is considered to be larger as the seat 2 is located on the rear side, and in this case, the distance from the side wall portion 22a is also gradually reduced. Other configurations are the same as those in the first embodiment.

  According to the fifth embodiment, an increase in the distance between the small occupant X ′ and the side wall of the recess 20a can be suppressed. That is, even in the case of a small occupant X ′, the side airbag 41 can sufficiently absorb the impact. In the fifth embodiment, the case of a driver's seat has been described. However, the present invention can also be applied to a passenger seat. This is because when a small occupant X is seated on a passenger seat, the seat is often slid forward so that the instrument panel or the like in front of the passenger is easily operated.

  In the first to fifth embodiments, the recess 20a is provided in a portion of the door trim 20 that is on the side of the occupant's waist, and the expansion regulating member is provided in the waist protection part 41a of the side airbag 41. 50 is provided, but the present invention eliminates or downsizes the shock absorbing member at a portion of the door trim 20 that is on the side of the chest of the occupant to provide a recess, and regulates the expansion of the chest protection portion of the side airbag 41. The thing which provided the member is also included. Moreover, the thing which formed the recessed part in the site | part used as a passenger | crew's waist | hip | lumbar part and the side of a chest, and provided the expansion control member in both a waist | hip | lumbar part protection part and a chest protection part is also included.

  Moreover, in the said 1st-5th embodiment, although the waist part protection part and the chest part protection part are comprised by dividing | segmenting a single bag body up and down, this invention is a waist part protection part. The present invention can be applied even when the chest protection part is constituted by separate bag bodies.

  The present invention is a vehicle capable of appropriately protecting a seated occupant while suppressing an increase in the size of a side airbag as much as possible even when a recess is provided in a side portion of a deployed side airbag on an inner surface of a side door. Interior structure can be provided and may be widely used in the automotive industry.

1 Side door 2 Seat 20 Door trim (Inside of side door)
20a Recess 20b Armrest 41 Side airbag 41a Lumbar protection part (side airbag)
41b Chest protector (second side airbag)
42 Inflator 50 Expansion Control Member

Claims (8)

A vehicle provided with a seat disposed on the side of a side door of the vehicle, and a side airbag for inflating and deploying on the side door side of the seat to protect a predetermined part of a seated occupant when a predetermined condition is satisfied The interior structure of
A recess that is recessed toward the outside of the vehicle is provided in a portion that is lateral to the predetermined portion of the seated occupant on the inner surface of the side door,
The side airbag is provided with an expansion regulating member that regulates the expansion and deployment of a predetermined amount or more in the vertical direction so as to promote the inflation and deployment in the vehicle width direction on the side of the concave portion. Vehicle interior structure. In the vehicle interior structure according to claim 1,
The vehicle interior structure according to claim 1, wherein the side airbag is for protecting a waist of a seated occupant. In the interior structure of the vehicle according to claim 2,
On the inner surface of the side door, an armrest is provided that extends in the longitudinal direction of the vehicle body along the upper edge of the recess and protrudes to the vehicle interior side.
The vehicle interior structure according to claim 1, wherein the side airbag is configured to be in an inflated state at a position lower than the armrest and on the side of the recess. In the interior structure of the vehicle according to claim 3,
A vehicle having a second side airbag for inflating and deploying at a position higher than the armrest on the side door side of the seat to protect a chest of a seated occupant when the predetermined condition is satisfied. Interior structure. In the interior structure of the vehicle according to claim 4,
The side airbag and the second side airbag are formed by vertically dividing a single airbag,
The interior structure of a vehicle, wherein the partition position is set to be the height position of the armrest in the unfolded state. In the interior structure of the vehicle according to claim 4 or 5,
An inflator that supplies gas for inflation and deployment to each side airbag is shared by both airbags,
A vehicle interior characterized in that the length of the gas supply passage to the side airbag for protecting the seated occupant's waist is shorter than the length of the gas supply passage to the second side airbag. Construction. The interior structure of the vehicle according to any one of claims 1 to 6,
The side airbag is attached to a position higher than the concave portion of the side door, and is configured to inflate and deploy downward from this attachment position by supplying gas downward.
The inflation regulating member is configured by a tether that extends in a substantially vertical direction inside the side airbag in an inflated and deployed state,
In the inflated and deployed state of the side airbag, the tether has its upper end closer to the upper end of the side airbag and the lower end closer to the inner side in the vehicle width direction than the lower end of the side airbag in the vehicle longitudinal direction. A vehicle interior structure characterized by being joined. The interior structure of the vehicle according to any one of claims 1 to 7,
The side airbag is for protecting the seated occupant's waist,
The seat is a driver seat or a passenger seat, and is configured to be slidable back and forth,
The recess is provided corresponding to the range of front and back movement of the waist of the seated occupant when the seat is slid back and forth,
The depth of the recess is shallower at a position on the side of the waist of the seated occupant when the seat is slid forward than at a position on the side of the waist of the seated occupant when the seat is slid rearward. The interior structure of a vehicle, characterized in that

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