JP2010179821A - Interior structure of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enlarge vehicle equipment part and sufficiently prevent a seated occupant from moving outward in the vehicle width direction. <P>SOLUTION: The interior structure of vehicle includes: a door trim 35 covering a door body 7 of a side door 1 of a vehicle from the inside of a cabin; an articles containing part 57 provided at the lower part of the door trim 35; a seat 21 arranged in the cabin so as to overlap with the side door 1 in vehicle body side view; and a side airbag device 27 provided with a waist protecting bag 31 that inflates and deploys on the side of the seat 21 by means of gas supplied from an inflator 33 for the side air bag in the event of vehicle side collision to protect the waist of the seated occupant P. Part of a lap belt 67 of a seatbelt 63 is configured with an airbelt 69 that inflates and deploys on a seated occupant P side of the waist protecting bag 31. The airbelt 69 and the waist protecting bag 31 are inflated and deployed between the door trim 35 above the articles containing part 57 and the seated occupant P so as to overlap each other in vehicle side view. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an interior structure of a vehicle provided with a side airbag device and an air belt.

  In the interior structure of a vehicle disclosed in Patent Document 1, an article storage unit is provided at a lower portion of a door trim of a side door, and an impact absorbing member is disposed on an upper edge of the article storage unit.

In the interior structure of a vehicle disclosed in Patent Document 2, an air belt is used for a lap belt portion of a seat belt.
JP 2000-16208 A JP 2006-88899 A

  However, if it is made into patent document 1, since the arrangement | positioning space of an impact-absorbing member is needed for a side door, vehicle equipment parts, such as an article | item storage part, cannot be enlarged sufficiently. Therefore, it is conceivable to increase the size of the vehicle equipment part while securing the shock absorbing function by providing the seat with a large side airbag that is inflated and deployed in the event of a vehicle side collision instead of providing the shock absorbing member. However, in this case, the side airbag that is inflated and deployed at the time of a vehicle-side collision enters the space above the vehicle equipment portion and wobbles between the door trim above the vehicle equipment portion and the seated occupant. There is a risk that the outward movement in the width direction cannot be sufficiently prevented.

  Further, even if an air belt is used for the lap belt portion as in Patent Document 2, the air belt and the side airbag only perform the respective occupant protection functions separately, so that the seated occupant moves outward in the vehicle width direction. It is not always possible to prevent the movement.

  The present invention has been made in view of such a point, and an object of the present invention is to enable enlargement of a vehicle equipment portion and to sufficiently prevent a seated occupant from moving outward in the vehicle width direction. It is in.

  In order to achieve the above object, the present invention is characterized in that the air belt and the waist protection bag overlap each other in a vehicle side view and inflate and deploy in a side view.

  Specifically, the present invention overlaps with the side door in a side view of a vehicle trim, a door trim that covers a door body of a side door of the vehicle from the vehicle interior side, a vehicle equipment section provided at a lower portion of the door trim. A seat disposed in the passenger compartment, a chest protection bag for protecting a chest of a seated occupant seated in the seat, and a waist protection bag for protecting the waist of the seated occupant, the chest protection bag and the waist A side airbag device incorporated in the seat so that the protective bag is inflated and deployed on the side of the seat by the gas supplied from the side airbag inflator in the event of a vehicle-side collision, and the movement of the seated occupant during a vehicle collision The following solution was taken for the interior structure of a vehicle having a seat belt to be regulated.

  That is, in the invention according to claim 1, the seat belt has a lap belt portion for fixing the waist portion of the seated occupant, and at least an outer portion in the vehicle width direction of the lap belt portion is used for an air belt when a vehicle side collision occurs. The gas supplied from the inflator constitutes an air belt that is inflated and deployed on the seat occupant side with respect to the waist protection bag, and the air belt and the waist protection bag are located between the door trim above the vehicle equipment portion and the seat occupant. In the above, the vehicle is configured so as to be inflated and deployed so as to overlap each other when viewed from the side of the vehicle.

  With this configuration, the air belt suppresses the movement of the waist of the seated occupant to the outside in the vehicle width direction using the waist protection bag as a backup. Even if the space between the door trim above the vehicle equipment and the seated occupant becomes large, the space is filled with the air belt and the waist protection bag, so the waist protection bag wobbles in the vehicle width direction. As a result, the movement of the seated occupant is more reliably suppressed. Therefore, it is possible to easily realize both the enlargement of the vehicle equipment part and the protection of the seated occupant.

  Further, since gas is supplied to the air belt by the air belt inflator, the belt length of the lap belt portion is shortened without the pretensioner mechanism, and the function of the lap pretensioner is realized.

  According to a second aspect of the present invention, in the interior structure of the vehicle according to the first aspect, an armrest is formed above the vehicle equipment portion in the door trim, and the space between the vehicle equipment portion and the armrest is recessed outside the vehicle. It is characterized by being formed in a recess.

  Therefore, since the space between the recess and the seated occupant is filled with the air belt and the waist protection bag, wobbling of the waist protection bag in the vehicle width direction is suppressed.

  According to a third aspect of the present invention, in the interior structure of the vehicle according to the first or second aspect, the chest protection bag and the waist protection bag of the side airbag device have a common side when a vehicle side collision occurs. The side airbag inflator is connected via a communication portion so as to be inflated and deployed by gas supplied from an airbag inflator so that the waist protection bag is inflated before the chest protection bag in the event of a vehicle side collision. Is arranged.

  With this configuration, the waist protection bag, which is important for protecting the seated occupant, is inflated quickly and reliably at the time of the vehicle side collision, so that the seated occupant can be more reliably protected. In addition, when the waist protection bag is inflated and deployed at a position corresponding to the upper space of the vehicle body equipment part, there is a problem that it easily enters the space. However, according to the present invention, the waist protection bag is overlapped with the air belt. The air belt effectively works to protect the seated occupant. That is, the waist protection bag serves as a backup and the movement of the seated occupant's waist to the outside in the vehicle width direction is suppressed by the air belt.

  According to a fourth aspect of the present invention, in the interior structure of the vehicle according to any one of the first to third aspects, the air belt of the seat belt is behind the waist protection bag of the side airbag device. It is configured to be in an expanded state.

  With this configuration, the inflated air belt is less likely to interfere with the inflated waist protection bag when the vehicle collides, and the expansion of the air belt is prevented from inhibiting the expansion of the waist protecting bag. Since the waist protection bag is more important for protecting the seat occupant than the air belt, the seat occupant is more reliably protected.

  According to the present invention, even if the space between the door trim above the vehicle equipment and the seated occupant becomes large, the space is filled with the air belt and the waist protection bag. As a result, the movement of the seated occupant is more reliably suppressed. Therefore, it is possible to easily realize both the enlargement of the vehicle equipment part and the protection of the seated occupant.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 shows a side door 1 of a vehicle to which a vehicle interior structure according to Embodiment 1 of the present invention is applied. The side door 1 is a right side front door of an automobile, and the side door 1 includes a door main body 7 including a metal inner panel 3 and a metal outer panel 5 as shown in FIGS. 2 and 3. ing. A wind glass 9 is disposed on the upper portion of the door body 7, and a metal side sill inner 11 and a metal side sill outer 13 extend in the vehicle front-rear direction. The metal side sill inner 11 is provided with a cylindrical inflatable belt inflator 15 for supplying gas at the time of a vehicle-side collision via a mounting bracket 16 substantially horizontally in a direction along the longitudinal direction of the vehicle. Gas is output in the direction of the passenger compartment.

  Further, a right front seat 21 having a seat back 17 and a seat cushion 19 is disposed in the vehicle interior so as to overlap the side door 1 in a side view of the vehicle body. The seat 21 is arranged to be slidable in the vehicle longitudinal direction by a slide mechanism 25 having a slide rail 23. A side airbag device 27 is built in the vicinity of the right end of the seat back 17 in the middle in the vertical direction. The side airbag device 27 includes a side airbag 36 that inflates and deploys between the side of the seat 21, that is, between the side door 1 and the seated occupant P seated on the seat 21 when a vehicle side collision occurs. The side airbag 36 is formed by overlapping two cloths and sewing the outer periphery. The upper portion of the side airbag 36 constitutes a chest protection bag 29 that protects the chest of the seated occupant P, while the lower portion of the side airbag 36 includes a waist protection bag 31 that protects the waist of the seated occupant P. It is composed. The chest protection bag 29 and the waist protection bag 31 are inflated and deployed by the gas supplied from the common side airbag inflator 33. The side airbag inflator 33 is arranged to output gas toward the waist protection bag 31, that is, substantially downward (in the direction indicated by the arrow X in FIG. 3). In addition, the side airbag 36 is built in the seat back 17 in a folded state in a normal state, but the side airbag 36 in that state is not illustrated.

  The door body 7 is covered with a resin door trim 35 from the vehicle interior side. The door trim 35 includes a door trim body 37 having a substantially rectangular opening 41 extending in the vehicle front-rear direction at a lower portion thereof. The opening 41 of the main body 37 is covered from the outside of the passenger compartment by a back cover 39 with the open side facing the passenger compartment.

  The door trim body 37 extends in the vertical direction with the wall surface facing the outside of the vehicle interior, and extends from the lower edge of the first wall portion 43 toward the vehicle interior side. A second wall portion 45 and a third wall portion 47 extending downward from the vehicle interior side edge of the second wall portion 45 toward the outside of the vehicle interior are integrally provided in order from above. The second wall portion 45 is inclined upward toward the front of the vehicle, and a grip portion 49 for gripping when the side door 1 is opened and closed is inclined upward from the middle of the second wall portion 45 in the vehicle front-rear direction. It extends to. The opening 41 is formed in the middle of the third wall 47 in the vertical direction.

  The back cover portion 39 includes a substantially rectangular vertical wall 51, and an upper wall 53 and a bottom wall 55 that sandwich the vertical wall 51. The bottom wall 55 extends below the lower end edge of the opening 41, and the vehicle compartment side edge abuts against the third wall portion 47. By the vertical wall 51 of the back cover part 39, the part of the third wall part 47 facing the vertical wall 51 in the vehicle width direction, and the bottom wall 55 connecting the vertical wall 51 and the third wall part 47, the article A storage portion 57 is formed. Also, an armrest 59 that bulges toward the vehicle interior side is formed by the second wall portion 45, the third wall portion 47, and the upper wall 53 of the back cover portion 39, that is, by the door trim 35 above the article storage portion 57. In addition, a space between the article storage portion 57 and the armrest 59 is formed in a recess 60 that is recessed toward the outside of the vehicle.

  A pillar trim 61 extends in the vertical direction behind the window glass 9. A retractor 64 is disposed below the pillar trim 61, and one end of a seat belt 63 is wound around the retractor 64. ing. The seat belt 63 regulates the movement of the seated occupant P in the event of a vehicle collision, extends upward from the retractor 64 along the pillar trim 61, and is inserted into a guide 66 disposed on the top of the pillar trim 61. Further, the seat belt 63 on the side opposite to the retractor 64 from the guide 66 is inserted into a tongue passage (not shown), and the tongue can be attached to and detached from the buckle device 65 installed on the left side of the seat cushion 19 of the seat 21. Has been. The other end of the seat belt 63 (the end on the side opposite to the retractor 64) is connected to one end of the air belt inflator 15 on the vehicle interior side. A lap belt portion 67 that fixes the waist of the seated occupant P is formed between the end of the seat belt 63 on the air belt inflator 15 side and the tongue. About half of the lap belt portion 67 on the outer side in the vehicle width direction constitutes an air belt 69 that is inflated and deployed by the gas supplied from the air belt inflator 15 at the time of a vehicle side collision.

  The air belt inflator 15 and the side airbag inflator 33 start gas supply almost simultaneously in response to detection of a side collision by a side collision sensor (not shown). The gas supply amount per unit time of 15 is set to be smaller than the gas supply amount per unit time of the side airbag inflator 33. Therefore, at the time of a vehicle side collision, the air belt 69 of the seat belt 63 enters the maximum inflated state later than the waist protection bag 31 of the side airbag device 27.

  In the vehicle interior structure configured as described above, the side airbag inflator 33 supplies gas to the chest protection bag 29 and the waist protection bag 31 in response to detection of a side collision by the side collision sensor at the time of a vehicle side collision. At the same time, the air belt inflator 15 supplies gas to the air belt 69. As a result, as shown in FIG. 3, the chest protection bag 29 is inflated and deployed between the door trim 35 above the armrest 59 and the chest of the seated occupant P, and the waist protection bag 31 and the air belt 69 are 1, the door trim 35 (concave portion 60) above the article storage portion 57 and below the armrest 59 and the waist of the seated occupant P are inflated and deployed in an overlapping manner in a side view of the vehicle. The air belt 69 is inflated and deployed on the side of the seated occupant P with respect to the waist protection bag 31. Thereby, the air belt 69 suppresses the movement of the waist of the seated occupant P toward the outside in the vehicle width direction using the waist protection bag 31 as a backup. Further, even if the space between the door trim 35 above the article storage portion 57, that is, the recess 60 and the seated occupant P becomes large, the space is filled with the air belt 69 and the waist protection bag 31. The wobbling of the bag 31 in the vehicle width direction is suppressed. As a result, the movement of the seated occupant P to the outside in the vehicle width direction is more reliably suppressed. Therefore, it is possible to easily realize both the enlargement of the article storage portion 57 and the protection of the seated occupant P.

  In the present embodiment, since the gas is supplied to the air belt 69 by the inflator 15 for the air belt, the belt length of the lap belt portion 67 is shortened without the pretensioner mechanism, and the function of the lap pretensioner is realized.

  Further, since the air belt 69 of the seat belt 63 reaches the maximum inflated state later than the waist protection bag 31 of the side airbag device 27, the air belt 69 inflated at the time of the vehicle side collision interferes with the inflated waist protection bag 31. This prevents the expansion of the air belt 69 from inhibiting the expansion of the waist protection bag 31. Since the waist protection bag 31 is more important for protecting the seated occupant P than the air belt 69, the seated occupant P is more reliably protected.

(Embodiment 2)
FIG. 4 shows a side door 1 of a vehicle to which the vehicle interior structure according to the second embodiment is applied. In FIG. 4, the illustration of the portion in front of the guide 66 of the seat belt 63 is omitted. In the second embodiment, a section extending from the front end to the middle in the front-rear direction at the boundary between the chest protection bag 29 and the waist protection bag 31 is sewn to form a partition portion (connecting portion) 38a. That is, the chest protection bag 29 and the waist protection bag 31 of the side airbag 36 of the side airbag device 27 are partitioned by the partition portion 38a. In addition, a non-expandable portion 38b whose strength is improved so as not to break is formed at the rear end of the partition portion 38a. Further, a rear portion of the boundary between the chest protection bag 29 and the waist protection bag 31 with respect to the non-inflatable portion 38 b constitutes a communication portion 34, and the chest protection bag 29 and the waist protection bag are connected via the communication portion 34. 31 is connected. Since the other configuration is the same as that of the first embodiment, the same components are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the present embodiment, a part of the boundary between the chest protection bag 29 and the waist protection bag 31 is sewn, and the side airbag inflator 33 gas flows into the waist protection bag 31, that is, substantially downward. Since it is arranged so as to output, the waist protection bag 31 important for protecting the seated occupant P is inflated earlier than the chest protection bag 29 when the vehicle side collision occurs. Therefore, the seated occupant P can be more reliably protected.

  In the first and second embodiments, the article storage portion 57, that is, the door pocket is provided as the vehicle equipment portion below the door trim 35, but the vehicle equipment portion is not limited to the article storage portion 57. For example, instead of the article storage unit 57, a hook for hanging a load or an in-vehicle switch may be provided as the vehicle equipment unit.

  Moreover, the vehicle interior structure according to the first and second embodiments is not limited to the right front seat 21 and the right front side door 1, but can be applied to the left and rear seats and side doors.

  In the first and second embodiments, the gas supply amounts per unit time of the airbelt inflator 15 and the side airbag inflator 33 are set to different values. After the collision is detected, the side air bag inflator 33 may start supplying gas earlier than the air belt inflator 15, and the air belt 69 may be in a maximum inflated state later than the waist protection bag 31.

  In the first and second embodiments, the air belt 69 is configured by the substantially half of the lap belt portion 67 on the outer side in the vehicle width direction. However, the air belt 69 may be configured by a narrower portion on the outer side in the vehicle width direction. The entire part 67 may be an air belt 69.

  In the first embodiment, the chest protection bag 29 and the waist protection bag 31 are connected and gas is supplied by the common side airbag inflator 33. The gas may be supplied by a separate side airbag inflator 33 without being connected to the waist protection bag 31.

  The present invention is useful as an interior structure of a vehicle provided with a side airbag device and an air belt.

It is the perspective view which looked at the side door of the vehicle to which the interior structure of the vehicle which concerns on Embodiment 1 was applied from the vehicle interior side. It is sectional drawing equivalent to the AA line of FIG. 1 in normal time. It is sectional drawing equivalent to the AA line of FIG. 1 at the time of the inflation of an airbag. FIG. 3 is a diagram corresponding to FIG.

1 Side door
7 Door body
15 Inflator for air belt
21 sheets
27 Side airbag device
29 Breast protection bag
31 Back protection bag
33 Inflator for side airbag
34 Communication Department
35 door trim
57 Goods storage (vehicle equipment)
59 Armrest
60 recess 63 seat belt
67 Lap belt
69 air belt
P seated crew

Claims (4)

A door trim that covers the door body of the side door of the vehicle from the vehicle interior side;
A vehicle equipment portion provided at a lower portion of the door trim;
A seat disposed in the passenger compartment so as to overlap the side door in a side view of the vehicle body;
A chest protection bag for protecting a chest of a seated occupant seated on the seat; and a waist protection bag for protecting the waist of the seated occupant, wherein the chest protection bag and the waist protection bag are side air when a vehicle side collision occurs. A side airbag device built in the seat so as to be inflated and deployed on the side of the seat by the gas supplied from the bag inflator;
A vehicle interior structure having a seat belt for restricting movement of the seated occupant during a vehicle collision,
The seat belt has a lap belt portion for fixing the waist portion of the seated occupant, and at least the outer portion in the vehicle width direction of the lap belt portion is used for protecting the waist by gas supplied from an air belt inflator at the time of a vehicle side collision. Consists of an air belt that inflates and deploys on the side of the seated occupant rather than the bag,
The vehicle, wherein the air belt and the waist protection bag are provided so as to overlap and expand and deploy in a vehicle side view between a door trim and a seated occupant above the vehicle equipment portion. Interior structure. The interior structure of the vehicle according to claim 1,
An interior structure of a vehicle, wherein an armrest is formed above the vehicle equipment portion in the door trim, and a recess is formed between the vehicle equipment portion and the armrest and is recessed toward the outside of the vehicle. In the interior structure of the vehicle according to claim 1 or 2,
The chest protection bag and the waist protection bag of the side airbag device are connected via a communication portion so as to be inflated and deployed by gas supplied from a common side airbag inflator at the time of a vehicle side collision,
An interior structure of a vehicle, wherein the side airbag inflator is arranged so that the waist protection bag is inflated before the chest protection bag in a vehicle side collision. The interior structure of the vehicle according to any one of claims 1 to 3,
An interior structure of a vehicle, wherein an air belt of the seat belt is configured to be in a maximum inflated state later than a waist protection bag of the side airbag device.

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